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Hainian Wang
School of Highway, Chang’an University, Middle Section of NanErhuan Road, Xi’an 710064, China

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Review
Published: 23 August 2021 in Advances in Materials Science and Engineering
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One of the failure mechanisms associated with asphalt paving layers, especially on steel deck bridges, is large permanent deformation, which adversely affects its long-term performance in service. Thus, epoxy resin was introduced in asphalt paving industry to tackle permanent deformation of asphalt mixtures due to its thermosetting nature. In this review, epoxy resin as a dominant component of the epoxy-asphalt composite system was first considered, followed by a discussion on its curing methods and curing mechanism. Furthermore, the physicochemical property and mechanical performance of epoxy asphalt and epoxy asphalt mixture were thoroughly examined. Crosslink density of epoxy asphalt dictates its viscosity and thus the allowable construction time. Phase separation and dispersion of asphalt particles in the epoxy matrix was observed for epoxy-asphalt composite, and it showed superior elastic behavior and deformation resistance capability when compared with conventional asphalt materials. Furthermore, epoxy asphalt mixture exhibited significantly higher compressive strength, much better rutting resistance, and superior durability and water resistance properties. However, its low-temperature cracking resistance was slightly compromised.

ACS Style

Yu Chen; Nabil Hossiney; Xu Yang; Hainian Wang; Zhanping You. Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances. Advances in Materials Science and Engineering 2021, 2021, 1 -35.

AMA Style

Yu Chen, Nabil Hossiney, Xu Yang, Hainian Wang, Zhanping You. Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances. Advances in Materials Science and Engineering. 2021; 2021 ():1-35.

Chicago/Turabian Style

Yu Chen; Nabil Hossiney; Xu Yang; Hainian Wang; Zhanping You. 2021. "Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances." Advances in Materials Science and Engineering 2021, no. : 1-35.

Review
Published: 10 June 2021 in Construction and Building Materials
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The compatibility between crumb rubber (CR) and asphalt binder plays a key role in the storage stability and rheological performance of rubberized asphalt binder. This review provides a comprehensive overview of characteristics of rubberized asphalt binder, factors influencing compatibility, compatibility evaluation methods, and improvement approaches. Desired compatibility results from the fact that CR is cross-linked with molecules of asphalt binder and evenly distributed in the asphalt binder, forming a homogeneous system. Rheological methods are the most widely used methods for compatibility evaluation. Additionally, the hybrid processing of surface activation treatment of CR and additives-grafting has shown to be a promising method for improving the compatibility of rubberized asphalt binder.

ACS Style

Wenhua Zheng; Hainian Wang; Yu Chen; Jie Ji; Zhanping You; Yuqing Zhang. A review on compatibility between crumb rubber and asphalt binder. Construction and Building Materials 2021, 297, 123820 .

AMA Style

Wenhua Zheng, Hainian Wang, Yu Chen, Jie Ji, Zhanping You, Yuqing Zhang. A review on compatibility between crumb rubber and asphalt binder. Construction and Building Materials. 2021; 297 ():123820.

Chicago/Turabian Style

Wenhua Zheng; Hainian Wang; Yu Chen; Jie Ji; Zhanping You; Yuqing Zhang. 2021. "A review on compatibility between crumb rubber and asphalt binder." Construction and Building Materials 297, no. : 123820.

Journal article
Published: 01 April 2021 in Journal of Cleaner Production
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The use of reclaimed asphalt pavement (RAP) is a hot research topic in the field of road engineering, as there are still many issues to overcome so as to become standard engineering applications. The diffusion of virgin/aged asphalt binder is a key process to improve RAP performance. In this study, the asphalt binder diffusion models were developed by molecular dynamics (MD) simulation. Two kinds of bio-rejuvenators (BR-1 and BR-5) were chosen to represent the straight-chain and aromatic structures, respectively. The method of relative concentration, radial distribution function (RDF), and microstructure morphology were used to evaluate the effect of bio-rejuvenators on the diffusion process of virgin/aged asphalt binder. The results showed that bio-rejuvenators had a positive effect on the fusion process between virgin and aged asphalt binder. The volume diffusion coefficient based on asphalt binder diffusion models indicated that the bio-rejuvenators accelerated the fusion process between the virgin and asphalt binder. After adding bio-rejuvenators to the aged asphalt binder, the agglomeration intensity in the SARA fractions was reduced to different degrees. Due to the aging of asphalt binder, asphaltenes formed different types of micro-stacking phenomena such as “T-shaped stacking,” “Face to Face stacking,” and “Offset Face to Face stacking.” The bio-rejuvenators of BR-1 and BR-5 exerted different regenerative effects during the diffusion process of aged asphalt binder. For BR-1, the “Pull-Out” and “Intercalation” effect can be observed in the process of asphaltene deagglomeration. “Pull-Out” is the main regenerative effect of BR-5 in aged asphalt binder. A strong electrostatic interaction occurs between BR-5 and PAHs in asphaltenes. Thus, BR-5 achieves the goal of aged asphalt binder regeneration by attracting PAHs.

ACS Style

Heyang Ding; Hainian Wang; Xin Qu; Aikaterini Varveri; Junfeng Gao; Zhanping You. Towards an understanding of diffusion mechanism of bio-rejuvenators in aged asphalt binder through molecular dynamics simulation. Journal of Cleaner Production 2021, 299, 126927 .

AMA Style

Heyang Ding, Hainian Wang, Xin Qu, Aikaterini Varveri, Junfeng Gao, Zhanping You. Towards an understanding of diffusion mechanism of bio-rejuvenators in aged asphalt binder through molecular dynamics simulation. Journal of Cleaner Production. 2021; 299 ():126927.

Chicago/Turabian Style

Heyang Ding; Hainian Wang; Xin Qu; Aikaterini Varveri; Junfeng Gao; Zhanping You. 2021. "Towards an understanding of diffusion mechanism of bio-rejuvenators in aged asphalt binder through molecular dynamics simulation." Journal of Cleaner Production 299, no. : 126927.

Journal article
Published: 01 December 2020 in Journal of Materials in Civil Engineering
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The aim of this research is using a waste wood–based bio-oil as the modifier of petroleum asphalt and analyzing its modification mechanism. The four components, infrared spectrum, and molecular weight distribution analysis were performed to investigate the chemical performance of control binder and bioasphalts. A conventional petroleum asphalt PG 64-22 was employed as the control binder. The bio-oil with addition of 10%, 15%, and 25% by weight was used to prepare bioasphalts (BMA). Meanwhile, the Gas Chromatograph Mass Spectrometer (GC-MS) and oven heating tests were conducted to explore the chemical compounds and their approximate contents in bio-oil. Results demonstrated that the bio-oil significantly changed the contents of chemical components in asphalt binder by decreasing the contents of saturates and asphaltenes and increasing the aromatics and resins contents. The modification of petroleum asphalt by bio-oil is not only a physical mixing but also a chemical process. Some chemical reactions were deduced between the PG 64-22 and bio-oil based on the infrared spectrum analysis. The added bio-oil converted some large molecules into small molecules. There are various chemical compounds in the bio-oil. Higher content of aromatic compounds and many lightweight compounds can explain the softer quality of bioasphalt and its inferior high temperature properties in comparison to petroleum asphalt.

ACS Style

Ran Zhang; Jie Ji; Zhanping You; Hainian Wang. Modification Mechanism of Using Waste Wood–Based Bio-Oil to Modify Petroleum Asphalt. Journal of Materials in Civil Engineering 2020, 32, 04020375 .

AMA Style

Ran Zhang, Jie Ji, Zhanping You, Hainian Wang. Modification Mechanism of Using Waste Wood–Based Bio-Oil to Modify Petroleum Asphalt. Journal of Materials in Civil Engineering. 2020; 32 (12):04020375.

Chicago/Turabian Style

Ran Zhang; Jie Ji; Zhanping You; Hainian Wang. 2020. "Modification Mechanism of Using Waste Wood–Based Bio-Oil to Modify Petroleum Asphalt." Journal of Materials in Civil Engineering 32, no. 12: 04020375.

Journal article
Published: 25 September 2020 in Construction and Building Materials
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The interfacial behavior between asphalt binder and mineral aggregate could directly affect water infiltration and durability of asphalt mixtures. The properties of aggregate, especially the mineral composition and surface texture (ST) characteristics, have a significant impact on the interfacial performance between asphalt and aggregate. In this study, the texture characteristics of aggregates with different lithology (granite, limestone and tuff) were obtained by aggregate image measurement system (AIMS), and the mineral composition of aggregates was determined using X-ray diffraction (XRD). Based on the pull-off test combined with the water immersion method, the effects of aggregate mineral properties, water immersion and its interaction time on interfacial behavior between asphalt and aggregate, were quantitatively analyzed. Furthermore, molecular dynamics models with different mineral compositions and water film thickness were utilized to analyze interfacial behaviors. Results showed that the acid-base analysis method might not serve as an accurate assessment of the aggregate and asphalt interface properties. In addition, the sensitivity analysis of tensile strength (TS) and ST was an effective tool for the control test, and the range obtained was the variation of 0.1 MPa TS within the range of eight ST value with 95% confidence level, which can be adopted for the parallel test of real aggregates with large texture differences. Results also showed that the interface strength of granite was highly affected by the increase in immersion time. In addition, the molecular dynamics model calculation results showed that the electrostatic adsorption capacity of albite with {1 0 0} surface was much stronger than {0 0 1} section. The Wmwa (adhesion work considering water film) index can effectively characterize the attenuation of adhesion ability, and the electrostatic adsorption of albite model was greatly affected by water immersion.

ACS Style

Ponan Feng; Hainian Wang; Heyang Ding; Jinkun Xiao; Marwa Hassan. Effects of surface texture and its mineral composition on interfacial behavior between asphalt binder and coarse aggregate. Construction and Building Materials 2020, 262, 120869 .

AMA Style

Ponan Feng, Hainian Wang, Heyang Ding, Jinkun Xiao, Marwa Hassan. Effects of surface texture and its mineral composition on interfacial behavior between asphalt binder and coarse aggregate. Construction and Building Materials. 2020; 262 ():120869.

Chicago/Turabian Style

Ponan Feng; Hainian Wang; Heyang Ding; Jinkun Xiao; Marwa Hassan. 2020. "Effects of surface texture and its mineral composition on interfacial behavior between asphalt binder and coarse aggregate." Construction and Building Materials 262, no. : 120869.

Review
Published: 24 July 2020 in Construction and Building Materials
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The use of latent heat storage capacity from phase change material (PCM) to regulate asphalt pavement temperature is an innovative way to mitigate temperature-related pavement distresses, such as thermal cracking and rutting. In this review, a detailed discussion on the classification and incorporation methods of PCM in asphalt mixture is presented. Further, the physical and chemical performances of PCM modified asphalts were reviewed, followed by their thermal and mechanical properties. It was observed that temperature related performance of asphalt mixtures can be well controlled in the phase change temperature range. Polyethylene glycol (PEG) and n-Tetradecane have been generally used to regulate the high and low temperatures of asphalt pavement, respectively. Mixed results were obtained on rheological properties of binders with PCMs as well as on road performance properties of asphalt mixtures with PCMs. It is important to note that PCMs with high latent heat and thermal conductivity are preferred for effective thermal regulation.

ACS Style

Yu Chen; Hainian Wang; Zhanping You; Nabil Hossiney. Application of phase change material in asphalt mixture – A review. Construction and Building Materials 2020, 263, 120219 .

AMA Style

Yu Chen, Hainian Wang, Zhanping You, Nabil Hossiney. Application of phase change material in asphalt mixture – A review. Construction and Building Materials. 2020; 263 ():120219.

Chicago/Turabian Style

Yu Chen; Hainian Wang; Zhanping You; Nabil Hossiney. 2020. "Application of phase change material in asphalt mixture – A review." Construction and Building Materials 263, no. : 120219.

Journal article
Published: 01 May 2020 in Journal of Materials in Civil Engineering
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Macroperformance, i.e., skid resistance, high-temperature, and compaction performance, are related to the functional performance, safety, and durability of asphalt pavement. Currently, the research on such influencing factors focuses on the properties of asphalt, gradation composition, pavement structure, and so forth, whereas the geometrical characteristics of coarse aggregate, especially its angularity, has not gained due attention from researchers. This paper investigated the effects of coarse-aggregate angularity on the skid resistance, high-temperature performance, and compaction performance of asphalt mixtures. Three-dimensional angularity (3DA) computed by X-ray computed tomography (XCT) was employed to characterize coarse-aggregate angularity. Texture depth (TD) and British pendulum number (BPN) were evaluated through the sand patch test and the British pendulum test (BPT), respectively. The dynamic stability and rutting depth of mixtures with different coarse-aggregate angularities were examined with the wheel tracking test. The variation in height of the specimen with different angularity asphalt mixtures during the compaction process was tested through the Superpave gyratory compactor (SGC). The dynamic modulus (|E*|) of the asphalt mixtures was analyzed with the asphalt mixture performance tester (AMPT) and the generation of master curves. The results showed that three-dimensional (3D) angularity is able to characterize the angularity of the coarse aggregate. A lower coarse-aggregate angularity leads to a smaller skid resistance of the asphalt mixture. The angularity greatly influences the high-temperature and compaction performance of asphalt mixtures. Higher angularity leads to better high-temperature stability but causes difficulty in compaction. The angularity has a significant influence on the |E*| values of SMA-16 asphalt mixture. The results revealed that the decrease in coarse-aggregate angularity translated into a decrease in |E*| values on average. This study provides support for further research into and application of macroscopic properties of asphalt mixtures.

ACS Style

Junfeng Gao; Hainian Wang; Yin Bu; Zhanping You; Xiang Zhang; Muhammad Irfan. Influence of Coarse-Aggregate Angularity on Asphalt Mixture Macroperformance: Skid Resistance, High-Temperature, and Compaction Performance. Journal of Materials in Civil Engineering 2020, 32, 04020095 .

AMA Style

Junfeng Gao, Hainian Wang, Yin Bu, Zhanping You, Xiang Zhang, Muhammad Irfan. Influence of Coarse-Aggregate Angularity on Asphalt Mixture Macroperformance: Skid Resistance, High-Temperature, and Compaction Performance. Journal of Materials in Civil Engineering. 2020; 32 (5):04020095.

Chicago/Turabian Style

Junfeng Gao; Hainian Wang; Yin Bu; Zhanping You; Xiang Zhang; Muhammad Irfan. 2020. "Influence of Coarse-Aggregate Angularity on Asphalt Mixture Macroperformance: Skid Resistance, High-Temperature, and Compaction Performance." Journal of Materials in Civil Engineering 32, no. 5: 04020095.

Articles
Published: 04 March 2020 in International Journal of Pavement Engineering
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The performance of an asphalt mixture does not only rely on its engineering properties. Yet, the service characteristics of an asphalt mixture do play an important role on the durability of pavements. This study was conducted to evaluate the effect of different aggregate types (granite and limestone) and the incorporation of recycled paper mill sludge (RPMS) on mixtures behaviour in terms of workability and compaction energy index (CEI). The effect of RPMS incorporation on the leaching potential was also assessed. A test was evaluated through the toxicity characteristics leaching procedure (TCLP) to identify the leaching behaviour of heavy metals with a possibility to contaminate the nearby water sources. Next, a surface morphological analysis was also conducted through the Scanning Electron Microscopy (SEM) to assess the relationship of fillers addition to the optimum binder content and water absorption. In this study, RPMS was used at rates of 0.5% and 1%. Based on the TCLP’s results, the leaching potential of RPMS incorporated mixture was addressed and proven to be less than the standardised requirements. The addition of different percentages of RPMS into limestone and granite asphalt mixtures had resulted in the increment of optimum binder content; however, still lower than control samples. Whereas their small increment in the combined water absorption percentage are relatively same to the control samples. The workability indices of asphalt mixtures peaked upon the usage of 0.5% RPMS but slightly reduced at 1% RPMS but nevertheless remained higher than the control specimen. This is due to the ability of RPMS reduce the surface tension, hence enabling less energy for compaction. The 0.5% RPMS addition was found to be the optimal content required to obtain a better service performance of asphalt mixture during mixing and compaction processes.

ACS Style

J.-Wei Chew; Sharvin Poovaneshvaran; Mohd Rosli Mohd Hasan; Hainian Wang; Ashiru Sani; Babak Golchin. Serviceability during asphaltic concrete production and leaching concerns of asphalt mixture prepared with recycled paper mill sludge. International Journal of Pavement Engineering 2020, 1 -11.

AMA Style

J.-Wei Chew, Sharvin Poovaneshvaran, Mohd Rosli Mohd Hasan, Hainian Wang, Ashiru Sani, Babak Golchin. Serviceability during asphaltic concrete production and leaching concerns of asphalt mixture prepared with recycled paper mill sludge. International Journal of Pavement Engineering. 2020; ():1-11.

Chicago/Turabian Style

J.-Wei Chew; Sharvin Poovaneshvaran; Mohd Rosli Mohd Hasan; Hainian Wang; Ashiru Sani; Babak Golchin. 2020. "Serviceability during asphaltic concrete production and leaching concerns of asphalt mixture prepared with recycled paper mill sludge." International Journal of Pavement Engineering , no. : 1-11.

Journal article
Published: 01 February 2020 in Construction and Building Materials
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Hot In-place Recycling (HIR) is an innovative pavement maintenance and rehabilitation technology that can reuse up to 100% of the material from an existing pavement as Reclaimed Asphalt Pavement (RAP). Pre-heating the pavement is the first step in the HIR process and uniformly heating distressed pavement is crucial to the quality of the recycled mixture in terms of rejuvenator diffusion, required adhesion between virgin and old material, and achieving an efficient asphalt ratio in RAP materials. The low thermal conductivity of asphalt concrete makes the transmission of heat from the top of the pavement to the scarification depth difficult. This study analyzed the impact of seven different operational parameters of recycling heating equipment on the heating efficacy by using the finite element method (FEM). The parameters include the height of heating board, equipment speed, output power, construction temperature, heating repetition, gap distance between two heaters, and area of heating board. The impact of variations in each parameter was statistically analyzed through fractional factorial experiment design. The heating board’s area and heating repetitions were found to be the two dominant factors affecting pavement surface preheating, and construction temperature is the most significant factor for pavement heating at a depth of 4 cm. Finally, three reasonable combinations of equipment operational parameters were provided to guide field construction practices.

ACS Style

Yang Liu; Hainian Wang; Susan Tighe; Daniel Pickel; Zhanping You. Study on impact of variables to pavement preheating operation in HIR by using FEM. Construction and Building Materials 2020, 243, 118304 .

AMA Style

Yang Liu, Hainian Wang, Susan Tighe, Daniel Pickel, Zhanping You. Study on impact of variables to pavement preheating operation in HIR by using FEM. Construction and Building Materials. 2020; 243 ():118304.

Chicago/Turabian Style

Yang Liu; Hainian Wang; Susan Tighe; Daniel Pickel; Zhanping You. 2020. "Study on impact of variables to pavement preheating operation in HIR by using FEM." Construction and Building Materials 243, no. : 118304.

Journal article
Published: 22 January 2020 in International Journal of Pavement Engineering
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ACS Style

Chonghui Wang; Hainian Wang; Markus Oeser; Mohd Rosli Mohd Hasan. Investigation on the morphological and mineralogical properties of coarse aggregates under VSI crushing operation. International Journal of Pavement Engineering 2020, 1 -14.

AMA Style

Chonghui Wang, Hainian Wang, Markus Oeser, Mohd Rosli Mohd Hasan. Investigation on the morphological and mineralogical properties of coarse aggregates under VSI crushing operation. International Journal of Pavement Engineering. 2020; ():1-14.

Chicago/Turabian Style

Chonghui Wang; Hainian Wang; Markus Oeser; Mohd Rosli Mohd Hasan. 2020. "Investigation on the morphological and mineralogical properties of coarse aggregates under VSI crushing operation." International Journal of Pavement Engineering , no. : 1-14.

Journal article
Published: 17 January 2020 in Construction and Building Materials
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The impact of aggregate morphological characteristics plays a key role in the skid resistance of road surface due to driving safety and cost benefits. The 2nd generation of the Aggregate Imaging Measurement System (AIMS II) and X-ray Computed Tomography (CT) were utilized to evaluate the shape of particles and capture the change in their morphological characteristics. The Los Angeles Abrasion (LAA) Test was also conducted in this paper to investigate the influence of variations in aggregate angularity on the resistant performance of asphalt mixtures. Before and after 100, 300, 500, and 1000 rotations of LAA polishing process, 48 particles from each different size were adopted and measured using AIMS II and XCT to obtain the value of their morphological properties. The parameter gradient angularity (GA) with AIMS II and three-dimensional angularity (3DA) with XCT of aggregate surface area were proposed from these tests. Analysis of Variance (ANOVA) was employed to compare these two image analysis systems. Conventional experiments including the sand patch test and British pendulum test, were applied using the prepared aggregates to establish a correlation between the morphological properties of grains and the parameters related to the skid resistance of asphalt mixtures. It was found that the resistance performance of asphalt mixtures can be well described with a function using the value of morphological properties through regression analysis. The efficacy of the X-ray CT analyzing system was verified to evaluate the performance of asphalt mixture pavement precisely. The changes in morphological characteristics of particles are the main causes for degradation in the skid resistance of asphalt pavement.

ACS Style

Hainian Wang; Chonghui Wang; Yin Bu; Zhanping You; Xu Yang; Markus Oeser. Correlate aggregate angularity characteristics to the skid resistance of asphalt pavement based on image analysis technology. Construction and Building Materials 2020, 242, 118150 .

AMA Style

Hainian Wang, Chonghui Wang, Yin Bu, Zhanping You, Xu Yang, Markus Oeser. Correlate aggregate angularity characteristics to the skid resistance of asphalt pavement based on image analysis technology. Construction and Building Materials. 2020; 242 ():118150.

Chicago/Turabian Style

Hainian Wang; Chonghui Wang; Yin Bu; Zhanping You; Xu Yang; Markus Oeser. 2020. "Correlate aggregate angularity characteristics to the skid resistance of asphalt pavement based on image analysis technology." Construction and Building Materials 242, no. : 118150.

Research article
Published: 25 March 2019 in Advances in Materials Science and Engineering
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This paper investigates dynamic response, rutting resistance, and fatigue behavior of three stone mastic asphalt (SMA) concrete mixtures selected on basis of nominal maximum aggregate size (NMAS): 25 mm, 19 mm, and 12.5 mm using cellulose fiber added as 0.3% of the total weight of aggregate. Superpave gyratory specimens were fabricated and subjected to the dynamic modulus (E∗) and flow tests (flow number and flow time) using an asphalt mixture performance tester. The E∗ test results were employed to develop stress-dependent master curves for each mixture, indicating that the mixture with the NMAS of 25 mm is relatively stiffer than other tested mixtures; this mixture also exhibits excellent strength against rutting failure. In addition, fatigue parameter, which is derived from dynamic response and phase angle, is determined, and results reveal that 12.5 mm NMAS mix has relatively better resistance to fatigue than other selected mixtures. Furthermore, nonlinear regression model specifications were utilized to predict accumulated strains as a function of loading cycles. Also, a flow number model is developed that predicts the rutting behavior of mixtures, and results suggest that model predicted and observed outputs of 25 mm SMA mix are found to be very close. The results of this study help in understanding the performance and behavior of cellulose fiber-added stone mastic asphalt concrete mixtures under varying simulated temperature and stress levels, which can be used in areas where the premature failure of flexible pavements is often observed. The testing protocol employed in this study will also help in evaluating pavement performance using Mechanistic-Empirical Pavement Design Guide.

ACS Style

Muhammad Irfan; Yasir Ali; Sarfraz Ahmed; Shahid Iqbal; Hainian Wang. Rutting and Fatigue Properties of Cellulose Fiber-Added Stone Mastic Asphalt Concrete Mixtures. Advances in Materials Science and Engineering 2019, 2019, 1 -8.

AMA Style

Muhammad Irfan, Yasir Ali, Sarfraz Ahmed, Shahid Iqbal, Hainian Wang. Rutting and Fatigue Properties of Cellulose Fiber-Added Stone Mastic Asphalt Concrete Mixtures. Advances in Materials Science and Engineering. 2019; 2019 ():1-8.

Chicago/Turabian Style

Muhammad Irfan; Yasir Ali; Sarfraz Ahmed; Shahid Iqbal; Hainian Wang. 2019. "Rutting and Fatigue Properties of Cellulose Fiber-Added Stone Mastic Asphalt Concrete Mixtures." Advances in Materials Science and Engineering 2019, no. : 1-8.

Journal article
Published: 12 March 2019 in Construction and Building Materials
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Fog seal with sand (FSS) became a promising technique for the preventive maintenance of flexible pavements. However, there is no quick and effective test method to evaluate whether it is possible to open the road to traffic shortly after the rehabilitation work. This study aims to introduce a new evaluation method to confirm the exact traffic opening time. In this paper, experimental works were performed based on the empirical tests, in terms of penetration, ductility, softening point, viscosity, permeability, and sand optimization tests to determine the best material. Evaporation and load abrasion tests were conducted to attain essential information that will help in establishing the new evaluation method and standard. Meanwhile, Damping test was conducted to prepare the stained pad specimens for the image analysis using Image Processing Technology (IPT). Results show that Material C (from SealMaster) had the best performance of rejuvenation and permeability. In addition, when the application rate ranged from 1.4 kg/m2 to 1.68 kg/m2 and the temperature interval ranged from 20 °C to 40 °C, it took four hours or more to complete the curing process. Finally, 2% of the stained pixel was confirmed as a terminal condition. A standard protocol based on the damping test and IPT has been established to decide the exact curing time required prior to opening the road for traffic.

ACS Style

Xiang Zhang; Hainian Wang; Mohd Rosli Mohd Hasan; Junfeng Gao; Muhammad Irfan. Traffic open time prediction of fog seal with sand using image processing technology. Construction and Building Materials 2019, 209, 9 -19.

AMA Style

Xiang Zhang, Hainian Wang, Mohd Rosli Mohd Hasan, Junfeng Gao, Muhammad Irfan. Traffic open time prediction of fog seal with sand using image processing technology. Construction and Building Materials. 2019; 209 ():9-19.

Chicago/Turabian Style

Xiang Zhang; Hainian Wang; Mohd Rosli Mohd Hasan; Junfeng Gao; Muhammad Irfan. 2019. "Traffic open time prediction of fog seal with sand using image processing technology." Construction and Building Materials 209, no. : 9-19.

Journal article
Published: 02 November 2018 in Construction and Building Materials
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In this study, the high temperature performances of ten combinations of bioasphalt and crumb rubber particles were evaluated by DSR and MSCR tests. Testing results indicated that short-term aging and crumb rubber modification increased the complex shear modulus and reduced the phase angle. In addition, the crumb rubber modified bioasphalt significantly reduced the unrecovered creep compliance and increased the percentage recovery. It can be concluded that the bioasphalt exhibited higher rutting resistance than the virgin binder and it can be used like traditional binder in term of rutting performance. In addition, crumb rubber greatly increased the rutting performance of bioasphalt.

ACS Style

Yu Chen; Chuanjun Ji; Hainian Wang; Yumin Su. Evaluation of crumb rubber modification and short-term aging on the rutting performance of bioasphalt. Construction and Building Materials 2018, 193, 467 -473.

AMA Style

Yu Chen, Chuanjun Ji, Hainian Wang, Yumin Su. Evaluation of crumb rubber modification and short-term aging on the rutting performance of bioasphalt. Construction and Building Materials. 2018; 193 ():467-473.

Chicago/Turabian Style

Yu Chen; Chuanjun Ji; Hainian Wang; Yumin Su. 2018. "Evaluation of crumb rubber modification and short-term aging on the rutting performance of bioasphalt." Construction and Building Materials 193, no. : 467-473.

Journal article
Published: 15 October 2018 in Construction and Building Materials
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The reuse of waste tire and biomass is important to environmental protection. The main objective of this study is to investigate the effect of bio-oil on the high-temperature performance of crumb rubber modified asphalt. Two types of crumb rubber powder produced from waste tire, 80-mesh and 20-mesh, were used to prepare the crumb rubber modified asphalt. Four weight ratios of bio-oil to rubber asphalt, 0%, 5%, 10%, and 15%, were chosen to prepare the composite modified asphalt binder in this study. Temperature sweep test and multiple stress creep recovery (MSCR) test were conducted to evaluate the high-temperature of the composite modified asphalt. The results showed that the viscosities of asphalts modified by 20-mesh crumb rubber were greater than that modified by 80-mesh ones. With the addition of bio-oil into crumb rubber asphalt, the viscosities of the composite modified asphalts first increased then decreased. Bio-oil can enhance the high-temperature performance of crumb rubber modified asphalt due to the physical and chemical interactions in a heated asphalt. The short-term aging process may improve the degree of blending between crumb rubber and bio-oil in the heated asphalt dispersion system and enhance the elastic property of crumb rubber modified asphalt.

ACS Style

Yong Lei; Hainian Wang; Ellie H. Fini; Zhanping You; Xu Yang; Junfeng Gao; Shi Dong; Guan Jiang. Evaluation of the effect of bio-oil on the high-temperature performance of rubber modified asphalt. Construction and Building Materials 2018, 191, 692 -701.

AMA Style

Yong Lei, Hainian Wang, Ellie H. Fini, Zhanping You, Xu Yang, Junfeng Gao, Shi Dong, Guan Jiang. Evaluation of the effect of bio-oil on the high-temperature performance of rubber modified asphalt. Construction and Building Materials. 2018; 191 ():692-701.

Chicago/Turabian Style

Yong Lei; Hainian Wang; Ellie H. Fini; Zhanping You; Xu Yang; Junfeng Gao; Shi Dong; Guan Jiang. 2018. "Evaluation of the effect of bio-oil on the high-temperature performance of rubber modified asphalt." Construction and Building Materials 191, no. : 692-701.

Journal article
Published: 15 September 2018 in Applied Sciences
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To improve the performance of petroleum asphalt, bio-char was used as a modifier for a petroleum asphalt binder, in this study. The rheological properties of bio-char modified asphalt binders were compared with different particle sizes and contents, with one control and one flake graphite modified asphalt binder. Specifically, the bio-char modifiers with two particle sizes (ranging from 75 μm–150 μm and less than 75 μm) and three contents of 2%, 4%, and 8% were added into the asphalt binder. A flake graphite powder with particle sizes less than 75 μm was used as a comparison modifier. The Scanning Electron Microscopy (SEM) image showed the porous structure and rough surface of bio-char as well as dense structure and smooth surface of flake graphite. A Rotational Viscosity (RV) test, Dynamic Shear Rheometer (DSR) test, aging test, and Bending Beam Rheometer (BBR) test were performed to evaluate the properties of bio-char modified asphalt in this study. Both modifiers could improve the rotational viscosities of the asphalt binders. The porous structure and rough surface of bio-char lead to larger adhesion interaction in asphalt binder than the smooth flake graphite. As a result, the bio-char modified asphalts had better high-temperature rutting resistance and anti-aging properties than the graphite modified asphalt, especially for the binders with the smaller-sized and higher content of bio-char particles. Furthermore, the asphalt binder modified by the bio-char with sizes less than 75 μm and about 4% content could also achieve a better low-temperature crack resistance, in comparison to other modified asphalt binders. Thus, this type of bio-char particles is recommended as a favorable modifier for asphalt binder.

ACS Style

Ran Zhang; Qingli Dai; Zhanping You; Hainian Wang; Chao Peng. Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes. Applied Sciences 2018, 8, 1665 .

AMA Style

Ran Zhang, Qingli Dai, Zhanping You, Hainian Wang, Chao Peng. Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes. Applied Sciences. 2018; 8 (9):1665.

Chicago/Turabian Style

Ran Zhang; Qingli Dai; Zhanping You; Hainian Wang; Chao Peng. 2018. "Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes." Applied Sciences 8, no. 9: 1665.

Journal article
Published: 12 September 2018 in Construction and Building Materials
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The objective of this study is to investigate the possibility of using bio-oil derived from waste wood as a rejuvenator to recycle aged asphalt binders. In this study, petroleum asphalt of PG58-28 was selected as the base binder. The bio-oil rejuvenators with concentrations of 10%, 15% and 20% by weight were added into the Pressure Aging Vessel (PAV) aged base binder to prepare the bio-rejuvenated asphalts. Through the chemical compounds analysis of the bio-oil using the Gas Chromatograph Mass Spectrometer (GC–MS) test, it can be found that the bio-oil derived from waste wood contains a high content of light compounds, including phenol, naphthalene, diethyl phthalate and so on. The rheological properties of bio-rejuvenated asphalts were evaluated and compared with the virgin and aged asphalts by Rotational Viscometer (RV), Dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) tests. The bio-rejuvenator can increase the viscous components and alleviate the stiffness of the aged asphalt binder. The high content of light compounds in the bio-oil balanced the chemical compounds of the aged asphalt. As a result, the rutting resistance and fatigue resistance of the aged asphalt binder were restored by the bio-oil significantly. The low temperature crack resistance of aged asphalt binder can be restored to approximately to that of the PG 58-28 by the bio-rejuvenator with the concentration of 15% and 20%. The bio-oil concentration had less impact on the rheological properties of bio-rejuvenated asphalts when the bio-oil concentration was higher than 15%. Therefore, the bio-oil with a concentration of 15% was recommended to rejuvenate the aged asphalt binder to be reused in the construction of pavement.

ACS Style

Ran Zhang; Zhanping You; Hainian Wang; Xi Chen; Chundi Si; Chao Peng. Using bio-based rejuvenator derived from waste wood to recycle old asphalt. Construction and Building Materials 2018, 189, 568 -575.

AMA Style

Ran Zhang, Zhanping You, Hainian Wang, Xi Chen, Chundi Si, Chao Peng. Using bio-based rejuvenator derived from waste wood to recycle old asphalt. Construction and Building Materials. 2018; 189 ():568-575.

Chicago/Turabian Style

Ran Zhang; Zhanping You; Hainian Wang; Xi Chen; Chundi Si; Chao Peng. 2018. "Using bio-based rejuvenator derived from waste wood to recycle old asphalt." Construction and Building Materials 189, no. : 568-575.

Journal article
Published: 15 June 2018 in Construction and Building Materials
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Concrete is one of the most extensively used building materials. In the cold salty lake region, concrete structures generally undergo freeze–thaw cycles subjected to sulfate in the winter and early spring, and experience carbonation during the rest of the year. It is necessary to study the degradation process of concrete during the alternation of freeze–thaw cycles subjected to sulfate and carbonation. In this article, two types of experiments were implemented: freeze–thaw cycles subjected to sulfate (SF), and the alteration of freeze–thaw cycles subjected to sulfate and carbonation (SFC). Computed tomography (CT), as a non-destructive testing technology, was adopted to reveal the rules of pore changes and show generated cracks after the alternation of freeze–thaw cycles subjected to sulfate and carbonation. CT scanning results showed that pore numbers, pore areas, and porosity of each cross-section changed to some extent. Due to the different distances from the top, the changes of each cross-section were found to be dissimilar. From the 2D images, SFC specimens were identified to have corner erosion and internal cracks, and were damaged more severely than SF specimens. The compressive strength loss of SF specimens was very limited in the early state; after a certain period of erosion, the compressive strength decreased rapidly. The compressive strength loss of specimens under SFC was larger than the specimens under SF. Carbonation constantly consumed calcium ions, which negatively affected the stability of porosity system. Freeze-thaw cycles caused aperture degradation, coarsened the pore structure, and with the additional interaction of sulfate erosion, aggravated the deterioration of concrete.

ACS Style

Fang Liu; Zhanping You; Xu Yang; Hainian Wang. Macro-micro degradation process of fly ash concrete under alternation of freeze-thaw cycles subjected to sulfate and carbonation. Construction and Building Materials 2018, 181, 369 -380.

AMA Style

Fang Liu, Zhanping You, Xu Yang, Hainian Wang. Macro-micro degradation process of fly ash concrete under alternation of freeze-thaw cycles subjected to sulfate and carbonation. Construction and Building Materials. 2018; 181 ():369-380.

Chicago/Turabian Style

Fang Liu; Zhanping You; Xu Yang; Hainian Wang. 2018. "Macro-micro degradation process of fly ash concrete under alternation of freeze-thaw cycles subjected to sulfate and carbonation." Construction and Building Materials 181, no. : 369-380.

Journal article
Published: 28 March 2017 in Construction and Building Materials
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Crude oil-based asphalt supplies are shrinking while its demand is increasing rapidly; this, in turn, has led to an increase in the price of asphalt binder. As the price of asphalt increases, seeking for alternative and renewable binder resources, such as bio-asphalt, has become a hot research topic. However, the high temperature performances of bio-asphalt are unsatisfactory according to many previous studies. This study aims to enhance the high temperature performance of bio-asphalt by adding SBS into the matrix asphalt. Five types of SBS modified bio-asphalts were studied. Studies included their viscosity, anti-rutting performance and temperature sensitivity through the rotational viscometer (RV) and dynamic shear rheometer (DSR). Among them, SBS dosage was 1% of SBS modified bio-asphalt and the 50 penetration grade binder was applied as the base binder. The bio-oil contents for the five types of binders were 0%, 5%, 10%, 15% and 20% by weight of the SBS modified bio-asphalt. It was found that SBS modified bio-asphalt had higher viscosity than the base binder to some degree, and the effect of bio-oil on SBS bio-binder viscosity was small when the bio-oil content and testing temperature were high. The mixing and compaction temperatures of SBS modified bio-asphalt were about the same as those of the 50# base binder when the bio-oil content was more than 10%. Before RTFO testing, the SBS bio-binder had more viscous characteristics and a lower anti-rutting performance, but was not significantly different from that of the base binder. However, an opposite trend was observed after the RTFO test. Meanwhile, SBS bio-binder was less sensitive to temperature than the base binder and such sensitivity decreased with the increase in bio-oil content before RTFO. After RTFO, the temperature sensitivity of the SBS bio-binder was still lower than that of the 50# base binder when bio-oil content was less than 20%, and grew with the increase in bio-oil content.

ACS Style

Ran Zhang; Hainian Wang; Junfeng Gao; Zhanping You; Xu Yang. High temperature performance of SBS modified bio-asphalt. Construction and Building Materials 2017, 144, 99 -105.

AMA Style

Ran Zhang, Hainian Wang, Junfeng Gao, Zhanping You, Xu Yang. High temperature performance of SBS modified bio-asphalt. Construction and Building Materials. 2017; 144 ():99-105.

Chicago/Turabian Style

Ran Zhang; Hainian Wang; Junfeng Gao; Zhanping You; Xu Yang. 2017. "High temperature performance of SBS modified bio-asphalt." Construction and Building Materials 144, no. : 99-105.

Research article
Published: 29 February 2016 in Advances in Materials Science and Engineering
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The morphological properties of coarse aggregates, such as shape, angularity, and surface texture, have a great influence on the mechanical performance of asphalt mixtures. This study aims to investigate the effect of coarse aggregate morphological properties on the high-temperature performance of asphalt mixtures. A modified Los Angeles (LA) abrasion test was employed to produce aggregates with various morphological properties by applying abrasion cycles of 0, 200, 400, 600, 800, 1000, and 1200 on crushed angular aggregates. Based on a laboratory-developed Morphology Analysis System for Coarse Aggregates (MASCA), the morphological properties of the coarse aggregate particles were quantified using the index of fractal dimension. The high-temperature performances of the dense-graded asphalt mixture (AC-16), gap-graded stone asphalt mixture (SAC-16), and stone mastic asphalt (SMA-16) mixtures containing aggregates with different fractal dimensions were evaluated through the dynamic stability (DS) test and the penetration shear test in laboratory. Good linear correlations between the fractal dimension and high-temperature indexes were obtained for all three types of mixtures. Moreover, the results also indicated that higher coarse aggregate angularity leads to stronger high-temperature shear resistance of asphalt mixtures.

ACS Style

Hainian Wang; Yin Bu; Yanzhe Wang; Xu Yang; Zhanping You. The Effect of Morphological Characteristic of Coarse Aggregates Measured with Fractal Dimension on Asphalt Mixture’s High-Temperature Performance. Advances in Materials Science and Engineering 2016, 2016, 1 -9.

AMA Style

Hainian Wang, Yin Bu, Yanzhe Wang, Xu Yang, Zhanping You. The Effect of Morphological Characteristic of Coarse Aggregates Measured with Fractal Dimension on Asphalt Mixture’s High-Temperature Performance. Advances in Materials Science and Engineering. 2016; 2016 ():1-9.

Chicago/Turabian Style

Hainian Wang; Yin Bu; Yanzhe Wang; Xu Yang; Zhanping You. 2016. "The Effect of Morphological Characteristic of Coarse Aggregates Measured with Fractal Dimension on Asphalt Mixture’s High-Temperature Performance." Advances in Materials Science and Engineering 2016, no. : 1-9.