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Dr. Ali Arabzadeh
Department of Civil, Construction, and Environmental Engineering (CCEE), Iowa State University, USA

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0 Pavement Engineering
0 Sustainability
0 pavement materials
0 Smart infrastructure
0 Innovative materials

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Journal article
Published: 01 September 2019 in Journal of Materials in Civil Engineering
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This experimental study examines the influence of different sources and lengths of carbon fiber (CF) on the volumetric properties, volume resistivity, and heat-generation efficiency of electrically conductive asphalt concrete (ECAC). This type of concrete has applications to pavement anti-icing and deicing in critical areas such as airfields where having surfaces free of ice and snow is of paramount importance. This study revealed that increasing CF length decreased the ECAC air void, voids in the mineral aggregate, and increased voids filled with asphalt. The source of CF influenced the electrical conductivity and heat-generation capability of ECAC and decreasing the CF length resulted in volume resistivity reduction and enhancement of heat-generation efficiency. The analyses results obtained from volume resistivity and heat-generation characterizations performed on ECAC cylindrical specimens were used for fabricating ECAC slabs. It was demonstrated that ECAC slab can melt a dense layer of ice under harsh winter conditions simulated in the laboratory environment.

ACS Style

Mohammad Ali Notani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan. Effect of Carbon-Fiber Properties on Volumetrics and Ohmic Heating of Electrically Conductive Asphalt Concrete. Journal of Materials in Civil Engineering 2019, 31, 04019200 .

AMA Style

Mohammad Ali Notani, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan. Effect of Carbon-Fiber Properties on Volumetrics and Ohmic Heating of Electrically Conductive Asphalt Concrete. Journal of Materials in Civil Engineering. 2019; 31 (9):04019200.

Chicago/Turabian Style

Mohammad Ali Notani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan. 2019. "Effect of Carbon-Fiber Properties on Volumetrics and Ohmic Heating of Electrically Conductive Asphalt Concrete." Journal of Materials in Civil Engineering 31, no. 9: 04019200.

Journal article
Published: 01 August 2019 in Heliyon
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Electrically-heated pavements have attracted attention as alternatives to the traditional ice/snow removal practices. Electrically conductive polymer-carbon composite coatings provide promising properties for this application. Based on the concept of joule heating, the conductive composite can be utilized as a resistor that generates heat by electric current and increases the surface temperature to melt the ice and snow on the pavement surface. This research investigates the feasibility of applying an electrically conductive composite coating made with a Polyurethane (PU) binder and micrometer-scale carbon fiber (CMF) filler as the electrical heating materials on the surface of Portland cement concrete (PCC) pavements. PU-CMF composite coatings were prepared using different volume fractions of CMF, applied on the PCC surfaces, and evaluated in terms of volume conductivity, resistive heating ability, durability, and surface friction properties at the proof-of-concept level. A conceptual cost analysis was performed to compare this method with other heated pavement systems with respect to economic viability. Percolative behavior of CMF in PU matrix was captured and most desirable CMF dosage rates in terms of each performance parameter were investigated. Two percolation transition zones were identified for CMF in PU matrix at dosage rate ranges of 0.25–1% and 4–10%. The composites exhibited their most desirable performance and properties at CMF dosage rates greater than 10% and smaller than 15%.

ACS Style

Alireza Sassani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan; Peter C. Taylor; Ali Nahvi. Polyurethane-carbon microfiber composite coating for electrical heating of concrete pavement surfaces. Heliyon 2019, 5, e02359 .

AMA Style

Alireza Sassani, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Peter C. Taylor, Ali Nahvi. Polyurethane-carbon microfiber composite coating for electrical heating of concrete pavement surfaces. Heliyon. 2019; 5 (8):e02359.

Chicago/Turabian Style

Alireza Sassani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan; Peter C. Taylor; Ali Nahvi. 2019. "Polyurethane-carbon microfiber composite coating for electrical heating of concrete pavement surfaces." Heliyon 5, no. 8: e02359.

Journal article
Published: 29 May 2019 in Composites Part B: Engineering
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Hot mix asphalt (HMA) was modified with carbon fiber (CF) to achieve electrically conductive asphalt concrete with applications to pavement anti-icing and de-icing. The volume resistivity of such electrically conductive asphalt concrete was compared with that of electrically conductive asphalt mastic. Then, the temperature increase, the power consumption, and the snow melting capability of electrically conductive asphalt concrete were evaluated. Lastly, a conceptual cost estimation was performed based on data obtained from lab investigations, publicly available bid records, and the experience gained from the field implementation of a heated pavement system made of electrically conductive portland cement concrete.

ACS Style

Ali Arabzadeh; Mohammad Ali Notani; Ayoub Kazemiyan Zadeh; Ali Nahvi; Alireza Sassani; Halil Ceylan. Electrically conductive asphalt concrete: An alternative for automating the winter maintenance operations of transportation infrastructure. Composites Part B: Engineering 2019, 173, 106985 .

AMA Style

Ali Arabzadeh, Mohammad Ali Notani, Ayoub Kazemiyan Zadeh, Ali Nahvi, Alireza Sassani, Halil Ceylan. Electrically conductive asphalt concrete: An alternative for automating the winter maintenance operations of transportation infrastructure. Composites Part B: Engineering. 2019; 173 ():106985.

Chicago/Turabian Style

Ali Arabzadeh; Mohammad Ali Notani; Ayoub Kazemiyan Zadeh; Ali Nahvi; Alireza Sassani; Halil Ceylan. 2019. "Electrically conductive asphalt concrete: An alternative for automating the winter maintenance operations of transportation infrastructure." Composites Part B: Engineering 173, no. : 106985.

Journal article
Published: 12 April 2019 in Construction and Building Materials
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Asphalt mastic and cement paste are matrices used to fill voids between aggregates in hot mix asphalt and Portland cement concrete. These matrices, in this study, are modified with carbon fiber (CF) – at variable dosage rates – and graphite powder – at a constant dosage rate – to produce electrically-conductive asphalt mastic and electrically-conductive cement paste for de-icing and anti-icing purposes. The purpose is to study the electrical behavior of conductive mastic and conductive paste in analogous conductive material contents, then demonstrate their heating efficiency under identical energy conditions, a novel feature of this study. Optimum CF contents are identified and temperature-related volume resistivity variation are studied at certain CF contents, another novel feature of this study. Heat generation efficiency is analyzed using infrared thermography (IRT) at a few different CF content values equal to or greater than the optimum. According to the findings of this study, conductive paste with higher conductivity exhibits stable electrical behavior when exposed to a temperature change, while conductive mastic’s volume resistivity drops as temperature decreases. Also, this study shows that both conductive mastic and conductive paste are capable of generating a satisfactory level of heat if modified with proper dosage rates of conductive materials.

ACS Style

Ali Arabzadeh; Alireza Sassani; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan; Peter C. Taylor. Comparison between cement paste and asphalt mastic modified by carbonaceous materials: Electrical and thermal properties. Construction and Building Materials 2019, 213, 121 -130.

AMA Style

Ali Arabzadeh, Alireza Sassani, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Peter C. Taylor. Comparison between cement paste and asphalt mastic modified by carbonaceous materials: Electrical and thermal properties. Construction and Building Materials. 2019; 213 ():121-130.

Chicago/Turabian Style

Ali Arabzadeh; Alireza Sassani; Halil Ceylan; Sunghwan Kim; Kasthurirangan Gopalakrishnan; Peter C. Taylor. 2019. "Comparison between cement paste and asphalt mastic modified by carbonaceous materials: Electrical and thermal properties." Construction and Building Materials 213, no. : 121-130.

Journal article
Published: 04 December 2018 in Journal of Computational Design and Engineering
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Conventional snow removal strategies add direct and indirect expenses to the economy through profit lost due to passenger delays costs, pavement durability issues, contaminating the water runoff, and so on. The use of superhydrophobic (super-water-repellent) coating methods is an alternative to conventional snow and ice removal practices for alleviating snow removal operations issues. As an integrated experimental and analytical study, this work focused on optimizing superhydrophobicity and skid resistance of hydrophobic coatings on asphalt concrete surfaces. A layer-by-layer (LBL) method was utilized for spray depositing polytetrafluoroethylene (PTFE) on an asphalt concrete at different spray times and variable dosages of PTFE. Water contact angle and coefficient of friction at the microtexture level were measured to evaluate superhydrophobicity and skid resistance of the coated asphalt concrete. The optimum dosage and spay time that maximized hydrophobicity and skid resistance of flexible pavement while minimizing cost were estimated using a multi-objective Bayesian optimization (BO) method that replaced the more costly experimental procedure of pavement testing with a cheap-to-evaluate surrogate model constructed based on kriging. In this method, the surrogate model is iteratively updated with new experimental data measured at proper input settings. The result of proposed optimization method showed that the super water repellency and coefficient of friction were not uniformly increased for all the specimens by increasing spray time and dosage. In addition, use of the proposed multi-objective BO method resulted in hydrophobicity and skid resistance being maximally augmented by approximately 23% PTFE dosage at a spray time of 5.5 s. Highlights Effects of spray time and dosage on the hydrophobicity and friction of asphalt were investigated. A layer-by-layer method was utilized for spray depositing polytetrafluoroethylene on an asphalt concrete. The optimum dosage and spay time were estimated by using a multi-objective Bayesian optimization method. An acquisition function that can tackle problems involving multiple objective functions was proposed. The optimum hydrophobicity and skid resistance were achieved with 23% PTFE dosage and at a spray time of 5.5 s.

ACS Style

Ali Nahvi; Mohammad Kazem Sadoughi; Ali Arabzadeh; Alireza Sassani; Chao Hu; Halil Ceylan; Sunghwan Kim. Multi-objective Bayesian optimization of super hydrophobic coatings on asphalt concrete surfaces. Journal of Computational Design and Engineering 2018, 6, 693 -704.

AMA Style

Ali Nahvi, Mohammad Kazem Sadoughi, Ali Arabzadeh, Alireza Sassani, Chao Hu, Halil Ceylan, Sunghwan Kim. Multi-objective Bayesian optimization of super hydrophobic coatings on asphalt concrete surfaces. Journal of Computational Design and Engineering. 2018; 6 (4):693-704.

Chicago/Turabian Style

Ali Nahvi; Mohammad Kazem Sadoughi; Ali Arabzadeh; Alireza Sassani; Chao Hu; Halil Ceylan; Sunghwan Kim. 2018. "Multi-objective Bayesian optimization of super hydrophobic coatings on asphalt concrete surfaces." Journal of Computational Design and Engineering 6, no. 4: 693-704.

Journal article
Published: 28 November 2018 in International Journal of Fatigue
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Thermal fatigue leads to serious degradations of structural performance and service quality of roadways. Thermal fatigue cracks occur in moderate climates, and are the result of generated cyclic thermal strains/stresses within the restrained pavement layers. In this study, an experimental setup is developed to measure the thermal fatigue resistance of asphalt concrete specimens under constant strain amplitude loading. To simulate thermal fatigue behavior of asphalt concrete, uniaxial loading is mechanically applied to achieve constant amplitude sinusoidal strains at a frequency of 0.01Hz. The results of statistical analyses indicate the asphalt content, aggregate source and asphalt binder type have the strongest effect on the thermal fatigue resistance of asphalt concrete.

ACS Style

Ali Arabzadeh; Murat Guler. Thermal fatigue behavior of asphalt concrete: A laboratory-based investigation approach. International Journal of Fatigue 2018, 121, 229 -236.

AMA Style

Ali Arabzadeh, Murat Guler. Thermal fatigue behavior of asphalt concrete: A laboratory-based investigation approach. International Journal of Fatigue. 2018; 121 ():229-236.

Chicago/Turabian Style

Ali Arabzadeh; Murat Guler. 2018. "Thermal fatigue behavior of asphalt concrete: A laboratory-based investigation approach." International Journal of Fatigue 121, no. : 229-236.

Journal article
Published: 30 August 2018 in Journal of Cleaner Production
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Traditional methods of removing snow/ice from pavements involve application of deicing salts and mechanical removal that carry environmental concerns. In this study, the feasibility of applying carbon fiber-based electrically conductive concrete (ECON) in heated pavement systems (HPS) as an alternative to traditional methods was investigated. Optimum carbon fiber dosage to achieve desirable electrical conductivity and avoid excessive fiber use was determined by studying carbon fiber percolation in different cementitious composites. System design was evaluated by finite element (FE) analysis. Heating performance in terms of energy consumption regime was studied by quasi-long-term (460-day) experimental study using a prototype ECON slab. Percolation transition zone of carbon fiber in paste, mortar, and concrete were respectively 0.25–1% (Vol.), 0.6–1% (Vol.), and 0.5–0.75% (Vol.). Optimum fiber dosage in ECON with respect to conductivity was 0.75%, resulting in volume conductivity of 1.86 × 10−2 (S/cm) at 28 days and 1.22 × 10−2(S/cm) at 460 days of age. Electrical-energy-to-heat-energy conversion efficiency decreased from 66% at 28 days to 50% at 460-day age. The results showed that the studied technology could be effectively applied for ice/snow melting on pavement surfaces and provide a feasible alternative to traditional methods if the ECON mixing proportions and system configurations are made with necessary precautions.

ACS Style

Alireza Sassani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; S.M. Sajed Sadati; Kasthurirangan Gopalakrishnan; Peter C. Taylor; Hesham Abdualla. Carbon fiber-based electrically conductive concrete for salt-free deicing of pavements. Journal of Cleaner Production 2018, 203, 799 -809.

AMA Style

Alireza Sassani, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, S.M. Sajed Sadati, Kasthurirangan Gopalakrishnan, Peter C. Taylor, Hesham Abdualla. Carbon fiber-based electrically conductive concrete for salt-free deicing of pavements. Journal of Cleaner Production. 2018; 203 ():799-809.

Chicago/Turabian Style

Alireza Sassani; Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; S.M. Sajed Sadati; Kasthurirangan Gopalakrishnan; Peter C. Taylor; Hesham Abdualla. 2018. "Carbon fiber-based electrically conductive concrete for salt-free deicing of pavements." Journal of Cleaner Production 203, no. : 799-809.

Journal article
Published: 30 July 2018 in Materials & Design
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Asphalt mastic, a pitch-matrix composite, consists of bitumen and mineral fillers (very fine aggregates), that fills the voids created by coarser aggregates in asphalt concrete. In this study, asphalt mastic was modified with carbon fiber (CF) and graphite powder (GP) to produce single-phase (containing only CF) and two-phase (containing both CF and GP) electrically-conductive asphalt mastic (ECAM) for anti-icing and deicing applications. Volume resistivities of ECAMs were measured at two different temperatures and the influence of temperature on electrical conductivity was evaluated, revealing that reduction in temperature enhances the ECAM's electrical conductivity. After analyzing the volume resistivity data for both single-phase and two-phase ECAM specimens, heat generation efficiency of single-phase ECAM was investigated at a conductive material dosage slightly higher than the optimum. The heat generation efficiency was evaluated at a below-freezing temperature by performing active infrared thermography (IRT). Based on the active IRT analysis results, it was found that single-phase ECAM at the selected CF content is capable of generating enough heat for melting ice and snow or preventing accumulation of snow and formation of ice.

ACS Style

Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Alireza Sassani; Kasthurirangan Gopalakrishnan; Mani Mina. Electrically-conductive asphalt mastic: Temperature dependence and heating efficiency. Materials & Design 2018, 157, 303 -313.

AMA Style

Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Alireza Sassani, Kasthurirangan Gopalakrishnan, Mani Mina. Electrically-conductive asphalt mastic: Temperature dependence and heating efficiency. Materials & Design. 2018; 157 ():303-313.

Chicago/Turabian Style

Ali Arabzadeh; Halil Ceylan; Sunghwan Kim; Alireza Sassani; Kasthurirangan Gopalakrishnan; Mani Mina. 2018. "Electrically-conductive asphalt mastic: Temperature dependence and heating efficiency." Materials & Design 157, no. : 303-313.