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Cheng Li
Key Laboratory for Special Area Highway Engineering of Ministry of Education, School of Highway, Chang'an University, China

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Journal article
Published: 01 November 2019 in Cement and Concrete Composites
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ACS Style

Xuhao Wang; SeyedHamed Sadati; Peter Taylor; Cheng Li; Xin Wang; Aimin Sha. Material characterization to assess effectiveness of surface treatment to prevent joint deterioration from oxychloride formation mechanism. Cement and Concrete Composites 2019, 104, 1 .

AMA Style

Xuhao Wang, SeyedHamed Sadati, Peter Taylor, Cheng Li, Xin Wang, Aimin Sha. Material characterization to assess effectiveness of surface treatment to prevent joint deterioration from oxychloride formation mechanism. Cement and Concrete Composites. 2019; 104 ():1.

Chicago/Turabian Style

Xuhao Wang; SeyedHamed Sadati; Peter Taylor; Cheng Li; Xin Wang; Aimin Sha. 2019. "Material characterization to assess effectiveness of surface treatment to prevent joint deterioration from oxychloride formation mechanism." Cement and Concrete Composites 104, no. : 1.

Journal article
Published: 01 November 2019 in Powder Technology
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ACS Style

Quan Sun; Junxing Zheng; Cheng Li. Improved watershed analysis for segmenting contacting particles of coarse granular soils in volumetric images. Powder Technology 2019, 356, 295 -303.

AMA Style

Quan Sun, Junxing Zheng, Cheng Li. Improved watershed analysis for segmenting contacting particles of coarse granular soils in volumetric images. Powder Technology. 2019; 356 ():295-303.

Chicago/Turabian Style

Quan Sun; Junxing Zheng; Cheng Li. 2019. "Improved watershed analysis for segmenting contacting particles of coarse granular soils in volumetric images." Powder Technology 356, no. : 295-303.

Journal article
Published: 10 October 2019 in Construction and Building Materials
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Particle breakage and abrasion of crushed aggregate materials may cause significant changes in particle morphologies, which can adversely affect their engineering properties. Previous studies have identified the research needs of more accurately and quickly quantifying particle morphology changes and establishing specifications for controlling aggregate degradation caused by handling and compaction during constructions. In this study, a previously developed laboratory testing method by the authors, termed the Gyratory Abrasion and Image Analysis (GAIA) test, was conducted on five types of aggregate materials to evaluate their particle breakage and abrasion characteristics under simulated compaction loading conditions. Based on the laboratory testing and image analysis data, this paper proposes new indices to quantify the breakage and abrasion characteristics in terms of changes in the particle morphologies of aggregate materials and also recommends the minimum representative sample sizes for using 2D image-based analysis methods to quantify distributions of the particle size and morphology of aggregate materials. The previously developed GAIA test, the proposed morphology-based aggregate breakage and abrasion indices, and the recommended sampling sizes for 2D image analysis of aggregate materials can help both researchers and practitioners to quickly and accurately quantify the breakage and abrasion characteristics of aggregate materials under various simulated compaction loads in laboratory, which may help to develop field QC/QA specifications to control the aggregate degradation caused by handling and compaction.

ACS Style

Cheng Li; Junxing Zheng; Zhen Zhang; Aimin Sha; Jia Li. Morphology-based indices and recommended sampling sizes for using image-based methods to quantify degradations of compacted aggregate materials. Construction and Building Materials 2019, 230, 116970 .

AMA Style

Cheng Li, Junxing Zheng, Zhen Zhang, Aimin Sha, Jia Li. Morphology-based indices and recommended sampling sizes for using image-based methods to quantify degradations of compacted aggregate materials. Construction and Building Materials. 2019; 230 ():116970.

Chicago/Turabian Style

Cheng Li; Junxing Zheng; Zhen Zhang; Aimin Sha; Jia Li. 2019. "Morphology-based indices and recommended sampling sizes for using image-based methods to quantify degradations of compacted aggregate materials." Construction and Building Materials 230, no. : 116970.

Research article
Published: 02 July 2019 in Advances in Civil Engineering
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The repeatability, reproducibility, and sources of error inherent in a given measurement are important considerations for potential users. To quantify errors arising from a single operator or multiple laboratories, most testing standards uses a one-way analysis of variance- (ANOVA-) based method, which utilizes a simple standard deviation across all measurements. However, this method does not allow users to quantify the sources of error and capacity (i.e., the precision to tolerance ratio). In this study, an innovative two-way ANOVA-based analysis method is selected to quantify the relative contributions of different sources of error and determine whether a measurement can be used to check conformance of a measured characteristic to engineering specifications. In this study, the standardized Atterberg limits tests, fall-cone device Atterberg limits tests, and bar linear shrinkage tests widely used for determining the soil plasticity were selected for evaluation and demonstration. Comparisons between results of the various testing methods are presented, and the error sources contributing to the overall variations between tests are discussed. Based on the findings of this study, the authors suggest use of two-way ANOVA-based R&R analysis to quantify the sources of measurement error and capacity and also recommend using the fall cone device and ASTM standardized thread rolling device for determining liquid and plastic limits of soils, respectively.

ACS Style

Cheng Li; Jeramy C. Ashlock; Xuhao Wang. Quantifying Repeatability Reproducibility Sources of Error and Capacity of a Measurement: Demonstrated Using Laboratory Soil Plasticity Tests. Advances in Civil Engineering 2019, 2019, 1 -11.

AMA Style

Cheng Li, Jeramy C. Ashlock, Xuhao Wang. Quantifying Repeatability Reproducibility Sources of Error and Capacity of a Measurement: Demonstrated Using Laboratory Soil Plasticity Tests. Advances in Civil Engineering. 2019; 2019 ():1-11.

Chicago/Turabian Style

Cheng Li; Jeramy C. Ashlock; Xuhao Wang. 2019. "Quantifying Repeatability Reproducibility Sources of Error and Capacity of a Measurement: Demonstrated Using Laboratory Soil Plasticity Tests." Advances in Civil Engineering 2019, no. : 1-11.

Research article
Published: 05 March 2019 in Advances in Civil Engineering
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This study presents a stability analysis of a high-steep rock slope with two faults during excavations and evaluates the effectiveness of a proposed reinforcement method using prestressed anchor cables. A 3D finite difference model was established based on the strength reduction method using FLAC3D software. The influence of various fault conditions and the effectiveness of the reinforcement on the slope stability during the excavation process were analyzed and compared to field monitoring data. The numerical analysis and field monitoring results showed that the fault close to the slope surface (f20) was prone to the local instability under external forces caused by the excavation, but a fault further away from the slope surface (f14) had insignificant influence on the stability of the slope. Based on the numerical analysis results, the proposed reinforcement measure can increase the factor of safety (FOS) of the slope by 19.2%. The field monitoring data also showed that the displacement of the monitoring point gradually decreased after the reinforcement, and the deformation of the slope was effectively controlled.

ACS Style

Qibing Zhan; Xinjian Sun; Cheng Li; Yawei Zhao; Xinjie Zhou; Yinpeng He; Yuxiang Zhang. Stability Analysis and Reinforcement of a High-Steep Rock Slope with Faults: Numerical Analysis and Field Monitoring. Advances in Civil Engineering 2019, 2019, 1 -8.

AMA Style

Qibing Zhan, Xinjian Sun, Cheng Li, Yawei Zhao, Xinjie Zhou, Yinpeng He, Yuxiang Zhang. Stability Analysis and Reinforcement of a High-Steep Rock Slope with Faults: Numerical Analysis and Field Monitoring. Advances in Civil Engineering. 2019; 2019 ():1-8.

Chicago/Turabian Style

Qibing Zhan; Xinjian Sun; Cheng Li; Yawei Zhao; Xinjie Zhou; Yinpeng He; Yuxiang Zhang. 2019. "Stability Analysis and Reinforcement of a High-Steep Rock Slope with Faults: Numerical Analysis and Field Monitoring." Advances in Civil Engineering 2019, no. : 1-8.

Journal article
Published: 18 February 2019 in Materials
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The adhesion bonding between asphalt and aggregate significantly influences field performance and durability of asphalt pavement. Adhesion promoters are typically used to improve asphalt-aggregate bonding and minimize moisture-related pavement damage, such as cracking and raveling. This study evaluated the effectiveness of plant ash byproduct as adhesion promoter to improve asphalt-aggregate adhesion performance. Three commonly used aggregate types (granite, basic rock, and limestone) and two asphalt binder types were used in laboratory testing. A modified stripping test method was developed to evaluate test results with image analysis and measurement of asphalt film thickness. The contact angle test and scanning electron microscopy (SEM) with energy disperse spectroscopy (EDS) were conducted. Test results showed that plant ash lixivium significantly improved asphalt-aggregate adhesion. Among three aggregate types, granite yielded the worst asphalt-aggregate adhesion for both control and treated specimens. The effectiveness of adhesion promotion varied depending on the type of asphalt or aggregate and temperature. The SEM/EDS observations showed that the mesh-like crystalline was formed at the interface between asphalt binder and aggregate in the treated specimen, which was believed to enhance the interfacial bonding and prevent asphalt film peeling off from aggregate.

ACS Style

Zhuangzhuang Liu; Xiaonan Huang; Aimin Sha; Hao Wang; Jiaqi Chen; Cheng Li. Improvement of Asphalt-Aggregate Adhesion Using Plant Ash Byproduct. Materials 2019, 12, 605 .

AMA Style

Zhuangzhuang Liu, Xiaonan Huang, Aimin Sha, Hao Wang, Jiaqi Chen, Cheng Li. Improvement of Asphalt-Aggregate Adhesion Using Plant Ash Byproduct. Materials. 2019; 12 (4):605.

Chicago/Turabian Style

Zhuangzhuang Liu; Xiaonan Huang; Aimin Sha; Hao Wang; Jiaqi Chen; Cheng Li. 2019. "Improvement of Asphalt-Aggregate Adhesion Using Plant Ash Byproduct." Materials 12, no. 4: 605.

Journal article
Published: 19 November 2018 in Construction and Building Materials
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This paper explains equipment related considerations on differences between the lab and field conditions that can lead to variations in resilient modulus (Mr) values of unbound materials as determined in accordance with AASHTO T307 standard. Three different granular materials and an elastic polyurethane (control) sample were tested using commercially available laboratory test equipment. A field test bed was also constructed to measure vehicle (Class 3) induced loading conditions at the bottom of an unbound granular layer underlying new hot-mix asphalt pavement to determine stress pulse duration as a function of vehicle speed. Various interpretation issues were identified within the framework of the testing methods and equipment including: (1) insufficient laboratory sensor sampling rate (per standard); (2) the laboratory specified 0.1 s load-pulse duration and haversine shape are not matching the field stress pulse duration and shape; (3) the need for careful tuning of the load system gain settings; (4) the number of LVDTs used in the vertical strain calculation; (5) limiting quality control and quality assurance to deformation ratio values in the preconditioning sequence; and (6) limiting the load step calculations to the last 5 of 100 load cycles. The goal of this paper is to provide equipment users and specification developers with user knowledge concerning laboratory resilient modulus determination.

ACS Style

Jia Li; David J. White; W. Robert Stephenson; Cheng Li. Considerations for laboratory resilient modulus testing of unbound pavement base materials. Construction and Building Materials 2018, 195, 515 -523.

AMA Style

Jia Li, David J. White, W. Robert Stephenson, Cheng Li. Considerations for laboratory resilient modulus testing of unbound pavement base materials. Construction and Building Materials. 2018; 195 ():515-523.

Chicago/Turabian Style

Jia Li; David J. White; W. Robert Stephenson; Cheng Li. 2018. "Considerations for laboratory resilient modulus testing of unbound pavement base materials." Construction and Building Materials 195, no. : 515-523.

Journal article
Published: 30 August 2018 in Construction and Building Materials
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Nondestructive testing methods have been increasingly used to evaluate in situ layered stiffness of pavement systems. However, different testing methods could yield considerable different results, which can bring confusions and difficulties to road agencies when conducting mechanistic-based designs or setting specifications for constructions. This study compares a newly improved multichannel analysis of surface waves (MASW) method and the falling weight deflectometer (FWD) test for estimating in situ moduli of various mechanically and chemically stabilized unpaved road sections, which will serve as foundations for future surface upgrade. The comparisons showed that the trends of MASW moduli generally agree with those of the FWD test for the sections without a geosynthetic layer, but the MASW moduli are much higher than the FWD moduli for the aggregate layers. The discrepancies between the two tests were found to be greatly influenced by the different testing strain levels, which were estimated using the KENLAYER analysis. By combining the MASW and FWD moduli and calculated testing strain levels, in situ modulus reduction characteristics of the various stabilized aggregate layers can also be determined, which provides a better understanding of the in situ mechanistic performances of the different stabilization methods under different traffic loading conditions.

ACS Style

Cheng Li; Jeramy C. Ashlock; Shibin Lin; Pavana K.R. Vennapusa. In situ modulus reduction characteristics of stabilized pavement foundations by multichannel analysis of surface waves and falling weight deflectometer tests. Construction and Building Materials 2018, 188, 809 -819.

AMA Style

Cheng Li, Jeramy C. Ashlock, Shibin Lin, Pavana K.R. Vennapusa. In situ modulus reduction characteristics of stabilized pavement foundations by multichannel analysis of surface waves and falling weight deflectometer tests. Construction and Building Materials. 2018; 188 ():809-819.

Chicago/Turabian Style

Cheng Li; Jeramy C. Ashlock; Shibin Lin; Pavana K.R. Vennapusa. 2018. "In situ modulus reduction characteristics of stabilized pavement foundations by multichannel analysis of surface waves and falling weight deflectometer tests." Construction and Building Materials 188, no. : 809-819.

Research article
Published: 29 July 2018 in Transportation Research Record: Journal of the Transportation Research Board
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Granular-surfaced roads frequently experience severe surface damage and degradation, which adversely affects traffic safety and significantly increases maintenance costs. The importance of the gradation and plasticity of granular-surfaced road materials have long been recognized. However, very few studies have focused on quantifying the effects of gradation and plasticity on the resulting mechanical performance of granular roadways. In this study, laboratory tests and statistical analyses were conducted to quantify the effects of variations in gradation and plasticity on the mechanical performance of granular road surface materials. A performance-based design method was developed using Fuller’s model to replace the commonly used arbitrary gradation band specifications. To validate the performance of the proposed method, field test sections were constructed then tested through a seasonal freeze–thaw period. Compared with existing gradation band specifications, the laboratory and field test results demonstrated that the proposed method is more closely tied to performance and can be used to develop specifications with more precise targets. To help secondary roads agencies implement the method while also recycling existing surface materials, a gradation optimization program was developed to determine the mixing ratios of existing roadway aggregate and two to three new quarry materials to come closest to the theoretical gradation for optimum performance. A complete set of testing, design, and construction procedures is also recommended to provide more cost-effective solutions to building or reconstructing granular-surfaced roads.

ACS Style

Cheng Li; Jeramy C. Ashlock; Bora Cetin; Charles T. Jahren; Vanessa Goetz. Performance-Based Design Method for Gradation and Plasticity of Granular Road Surface Materials. Transportation Research Record: Journal of the Transportation Research Board 2018, 2672, 216 -225.

AMA Style

Cheng Li, Jeramy C. Ashlock, Bora Cetin, Charles T. Jahren, Vanessa Goetz. Performance-Based Design Method for Gradation and Plasticity of Granular Road Surface Materials. Transportation Research Record: Journal of the Transportation Research Board. 2018; 2672 (52):216-225.

Chicago/Turabian Style

Cheng Li; Jeramy C. Ashlock; Bora Cetin; Charles T. Jahren; Vanessa Goetz. 2018. "Performance-Based Design Method for Gradation and Plasticity of Granular Road Surface Materials." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 52: 216-225.

Journal article
Published: 01 October 2017 in Construction and Building Materials
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ACS Style

Cheng Li; Jeramy C. Ashlock; David J. White; Charles T. Jahren; Bora Cetin. Gyratory abrasion with 2D image analysis test method for evaluation of mechanical degradation and changes in morphology and shear strength of compacted granular materials. Construction and Building Materials 2017, 152, 547 -557.

AMA Style

Cheng Li, Jeramy C. Ashlock, David J. White, Charles T. Jahren, Bora Cetin. Gyratory abrasion with 2D image analysis test method for evaluation of mechanical degradation and changes in morphology and shear strength of compacted granular materials. Construction and Building Materials. 2017; 152 ():547-557.

Chicago/Turabian Style

Cheng Li; Jeramy C. Ashlock; David J. White; Charles T. Jahren; Bora Cetin. 2017. "Gyratory abrasion with 2D image analysis test method for evaluation of mechanical degradation and changes in morphology and shear strength of compacted granular materials." Construction and Building Materials 152, no. : 547-557.

Journal article
Published: 01 September 2017 in Cold Regions Science and Technology
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Cheng Li; Pavana K.R. Vennapusa; Jeramy Ashlock; David J. White. Mechanistic-based comparisons for freeze-thaw performance of stabilized unpaved roads. Cold Regions Science and Technology 2017, 141, 97 -108.

AMA Style

Cheng Li, Pavana K.R. Vennapusa, Jeramy Ashlock, David J. White. Mechanistic-based comparisons for freeze-thaw performance of stabilized unpaved roads. Cold Regions Science and Technology. 2017; 141 ():97-108.

Chicago/Turabian Style

Cheng Li; Pavana K.R. Vennapusa; Jeramy Ashlock; David J. White. 2017. "Mechanistic-based comparisons for freeze-thaw performance of stabilized unpaved roads." Cold Regions Science and Technology 141, no. : 97-108.

Journal article
Published: 13 July 2017 in Applied Sciences
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Poor subsurface drainage is frequently identified as a factor leading to the accelerated damage of roadway systems. Geocomposite drainage layers offer an alternative to traditional methods but have not been widely evaluated, especially in terms of the impact of changes on both drainage capacity and stiffness. In this study, both paved and unpaved test sections with and without an embedded geocomposite drainage layer were constructed and tested. The geocomposite layers were installed directly beneath the roadway surface layers to help the rapid drainage of any infiltrated water and thus prevent water entering the underlying foundation materials. The laboratory, field, and numerical analysis results showed that the geocomposite layers increased the permeability of roadway systems by two to three orders of magnitude and that it can effectively prevent the surface and foundation materials from becoming saturated during heavy rainfall events. For the stiffness of the sections, the paved sections with and without a geocomposite layer showed that the composite modulus values measured at the surface were more reflective of the foundation layer support conditions beneath the geocomposite layer than the geocomposite layer itself. The unpaved road section with the geocomposite layer yielded lower composite modulus values than the control section but showed overall better road surface conditions after a rain event due to the improved subsurface drainage condition.

ACS Style

Cheng Li; Jeramy Ashlock; David White; Pavana Vennapusa. Permeability and Stiffness Assessment of Paved and Unpaved Roads with Geocomposite Drainage Layers. Applied Sciences 2017, 7, 718 .

AMA Style

Cheng Li, Jeramy Ashlock, David White, Pavana Vennapusa. Permeability and Stiffness Assessment of Paved and Unpaved Roads with Geocomposite Drainage Layers. Applied Sciences. 2017; 7 (7):718.

Chicago/Turabian Style

Cheng Li; Jeramy Ashlock; David White; Pavana Vennapusa. 2017. "Permeability and Stiffness Assessment of Paved and Unpaved Roads with Geocomposite Drainage Layers." Applied Sciences 7, no. 7: 718.

Articles
Published: 13 October 2016 in International Journal of Pavement Engineering
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Granular surface and base layers of low-volume roads (LVRs) are frequently subjected to severe damage that adversely affects safety and requires regular repair and maintenance. Various stabilisation methods have been evaluated for mitigating damage and improving serviceability of LVR systems. However, few well-documented comparisons exist of the field mechanical performance, durability and construction costs of different stabilisation methods under the same set of geological, climate, and traffic conditions. Therefore, the present study was conducted to identify the most effective and economical among several stabilisation methods for repairing or reconstructing granular surface and base layers of LVRs. In this study, a range of promising technologies from a comprehensive literature review was selected and examined using field demonstration sections. A total of nine geomaterials, three chemical stabilisers, and three types of geosynthetics were used to construct various test sections over a 3.22 km stretch of granular-surfaced road. Extensive falling weight deflectometer (FWD) and dynamic cone penetrometer tests were performed to evaluate the multilayered elastic moduli and strengths of the various sections. This paper details the design and construction of each test section, compares the as-constructed mechanistic performance of all test sections, and assesses stiffness changes of several sections one year after construction. To provide a statistical basis for the comparisons, a pairwise multiple-comparison procedure applied for unequal sample sizes and variances and the paired t-test were used to analyse the FWD test results, demonstrating that the performance measures of the various sections were significantly different.

ACS Style

Cheng Li; Jeramy C. Ashlock; David J. White; Pavana K. R. Vennapusa. Mechanistic-based comparisons of stabilised base and granular surface layers of low-volume roads. International Journal of Pavement Engineering 2016, 20, 112 -124.

AMA Style

Cheng Li, Jeramy C. Ashlock, David J. White, Pavana K. R. Vennapusa. Mechanistic-based comparisons of stabilised base and granular surface layers of low-volume roads. International Journal of Pavement Engineering. 2016; 20 (1):112-124.

Chicago/Turabian Style

Cheng Li; Jeramy C. Ashlock; David J. White; Pavana K. R. Vennapusa. 2016. "Mechanistic-based comparisons of stabilised base and granular surface layers of low-volume roads." International Journal of Pavement Engineering 20, no. 1: 112-124.

Journal article
Published: 30 April 2015 in Geotechnical Testing Journal
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ACS Style

Cheng Li; David J. White; Pavana Vennapusa. Moisture-Density-Strength-Energy Relationships for Gyratory Compacted Geomaterials. Geotechnical Testing Journal 2015, 38, 1 .

AMA Style

Cheng Li, David J. White, Pavana Vennapusa. Moisture-Density-Strength-Energy Relationships for Gyratory Compacted Geomaterials. Geotechnical Testing Journal. 2015; 38 (4):1.

Chicago/Turabian Style

Cheng Li; David J. White; Pavana Vennapusa. 2015. "Moisture-Density-Strength-Energy Relationships for Gyratory Compacted Geomaterials." Geotechnical Testing Journal 38, no. 4: 1.