Article
Construction & Building Technology
Ilerioluwa Giwa, Husam Sadek, Farah Zaremotekhases
Summary: This study investigates the merits and limitations of available HWTT analysis approaches, identifying the Iowa DOT approach as the most popular. In addition to this method, other approaches like the Novel Three-Parameter approach, Combined Franken-Power approach, as well as algorithm-based methods have been shown to be useful for accurately analyzing HWTT data.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Hayder Abbas Obaid, Tameem Mohammed Hashim, Ahmed Awad Matr Al-Abody, Mohammed Salah Nasr, Ghadeer Haider Abbas, Abdullah Musa Kadhim, Monower Sadique
Summary: The rapid reduction of energy resources and the increased effects of global warming have led to a search for new techniques in paving construction. Adopting technologies like warm-mix asphalt (WMA) or asphalt recycling can have significant economic benefits and reduce environmental impact. This research focuses on studying the mechanical and durable properties of modified WMA mixtures using different additives and percentages of reclaimed asphalt pavement (RAP). The results show that these additives can greatly improve the mechanical and durable properties of WMA mixtures, promoting waste recycling in the paving industry.
Article
Construction & Building Technology
Jaehoon Jeong, B. Shane Underwood, Y. Richard Kim
Summary: This study describes a methodology to develop index-volumetrics relationships for predicting the rutting performance of asphalt mixtures. Two rutting tests, stress sweep rutting and Hamburg wheel-track test, were utilized to characterize the performance of two mixtures. IVRs were developed for each mixture and test method to predict rutting performance based on volumetric properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Tameem Mohammed Hashim, Mohammed Salah Nasr, Yasir Mohammed Jebur, Abdullah Kadhim, Zainab Alkhafaji, Mirza Ghouse Baig, Saheed Kolawole Adekunle, Mohammed A. A. Al-Osta, Shamsad Ahmad, Zaher Mundher Yaseen
Summary: Growing environmental pollution worldwide is mainly caused by the accumulation of liquid and solid waste. Developed countries support waste recycling policies due to their significant impact on the environment. Hot-mix asphalt mixtures (HMA) with reclaimed asphalt pavement (RAP) show excellent performance in resisting rutting. However, using a high percentage of RAP (>25%) poses a challenge due to increased stiffness. This study explores the use of various commercial and noncommercial rejuvenators to address the stiffness issue and optimize the performance of RAP mixtures in different proportions.
Article
Construction & Building Technology
Rouzbeh Ghabchi, Chamika Prashan Dharmarathna, Maryam Mihandoust
Summary: This study investigates the effects of incorporating different amounts of Micronized PET (MPET) into PG 58-28 asphalt binder on its performance and evaluates the durability of asphalt mixes. The results show that MPET significantly improves viscosity, adhesion, and resistance to cracking, rutting, and moisture-induced damage. The use of MPET as an asphalt binder modifier is an effective method for enhancing mechanical properties of asphalt pavements while addressing environmental concerns and conserving natural resources.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Green & Sustainable Science & Technology
Mohamed Meftah Ben Zair, Fauzan Mohd Jakarni, Ratnasamy Muniandy, Salihudin Hassim
Summary: This study explores the feasibility of using PET waste as an additive in asphalt mixtures. By analyzing the physical and chemical properties of PET and the effects of PET-modified asphalt mixtures, it was found that adding PET can enhance the performance of pavement mixtures, providing both environmental and economic benefits.
Article
Construction & Building Technology
Jince P. Zachariah, Partha Pratim Sarkar, Manish Pal
Summary: The study focused on the rutting resistance and moisture susceptibility of bituminous concrete with crushed brick waste as aggregate reinforced with polypropylene fibre. The results showed that the mix with crushed overburnt brick waste and 1% dry mixed polypropylene fibre performed well in rutting resistance and moisture susceptibility at 50 degrees C. Comparatively, MSI was found to be more reliable than SIP in understanding the moisture susceptibility of the bituminous concrete mixes.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Geological
Leilei Chen, Gang Liu, Bo Yao, Zhendong Qian
Summary: This study developed a new rutting prediction model for semi-rigid base asphalt pavement (SBAP) based on field core specimens and Hamburg wheel tracking (HWT) test data. The proposed model showed significantly improved prediction accuracy compared to the original model embedded in the Chinese specification. The model development process could also be applied to other regions for rutting prediction.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2021)
Article
Construction & Building Technology
Sogol Sadat Haddadi, Erdem Coleri, Shashwath Sreedhar
Summary: The study found that increasing binder content does not significantly affect the cracking performance of RAP&RAS mixtures, but it is an effective strategy to improve the fatigue cracking resistance of 30% and 40% RAP mixtures.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2021)
Article
Engineering, Civil
Ben C. Cox, Ashley S. Carey, Jessica V. Lewis, Isaac L. Howard
Summary: This paper assesses the use of rubber tire wheel tracking in laboratory settings for asphalt mixtures, focusing on differentiating moisture damage from rutting. The analysis of extensive experiments and literature review reveals that second-generation PURWheel protocols, using a pneumatic rubber tire and testing under wet and dry conditions, offer significant contributions to the asphalt mixture testing community. The evaluation methods demonstrated the potential of rubber tire wheel tracking to improve characterization of asphalt mixtures and provide insights for standardizing protocols.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Engineering, Civil
Maziar Mivehchi, Haifang Wen, Yankai Wen, Lin Wang
Summary: This study evaluated rut depths and cracking test (CT) index values of different asphalt mixes. The results showed that rut depth is highly sensitive to binder content, performance grade, aggregate angularity, and RAP/RAS content. The CT index is sensitive to binder content, air void content of the mixture, aggregate gradation, and RAP/RAS content. Low-RAP mixes also showed worse cracking performance than mixes without RAP.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Construction & Building Technology
Gavadakatla Vamsikrishna, Dharamveer Singh
Summary: The recent focus on the balanced mix design (BMD) concept has prompted researchers to explore simple performance tests to assess the rutting performance of asphalt mixes. The Hamburg wheel tracking test (HWTT) is commonly used, but has limitations for quality control/quality assurance (QC/QA). As a result, researchers have been investigating alternative tests such as the ideal shear asphalt rutting test (IDEAL-RT) and the high-temperature indirect tensile strength test (HT-IDT) for QC/QA purposes. This study evaluates different rutting parameters from IDEAL-RT and HT-IDT and establishes threshold values for shear strength, RTIndex, and HT-IDT strength to determine the pass/fail criteria for asphalt mixes.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Afshar Yousefi, Ali Behnood, Ata Nowruzi, Hamzeh Haghshenas
Summary: Global warming and reduced energy resources are driving the search for alternative materials and technologies for pavement construction. This research focused on investigating the mechanical and durability performance of WMA mixtures containing reclaimed asphalt pavement (RAP) with different types of additives. Results showed that the performance of the mixtures varied depending on the WMA additive, with PAWMA (R) decreasing resistance to moisture damage. Despite decreasing flexibility and cracking resistance, incorporating RAP material led to improved resistance to rutting. Mixtures containing RAP and Kaowax (R) had the highest flow number value, while those with Zeolite (R) had the lowest. Furthermore, mixtures containing RAP and PAWMA (R) showed the highest resistance to moisture damage and best resilient modulus and cracking resistance among all mixtures studied.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Weiguang Zhang, Xiao Chen, Shihui Shen, Louay. N. Mohammad, Bingyan Cui, Shenghua Wu, Ali Raza Khan
Summary: This study characterized the field rutting performance of asphalt pavement based on Hamburg wheel tracking (HWT) rut depth. The relationship between field measurements and HWT rut depth was evaluated, and a field rut depth predictive model incorporating HWT rut depth was developed. Results showed that HWT rut depth magnitudes were closer to field rut depth when polymer modification was adopted.
JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS
(2021)
Article
Construction & Building Technology
Shaowen Du
Summary: The study investigates the effects of introducing five different types of fibers into cold recycled mixture, finding that all fibers improve the performance of the mixture, with polyester fiber showing the highest enhancement in fatigue life.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Chuanqi Yan, Weidong Huang, Mao Zheng, Yuan Zhang, Peng Lin
Summary: The study evaluated the influence of ageing on HCPMA mixture performance, showing that ageing negatively impacted stripping, cracking, and rutting resistances. It was found that unaged HCPMA mixture had improved performance over conventional modified mixtures, but was more susceptible to ageing. Additional attention is needed for mixture rutting performance after ageing.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Jiwang Jiang, Ying Li, Yuan Zhang, Hussain U. Bahia
Summary: This study proposes a novel method to characterise the distribution of mortar film thickness in asphalt mixture using image processing. The results show that binder modification and compaction temperature have significant effects on the mortar film distribution. The correlation between mortar film thickness and mixture cracking resistance is analyzed using mortar film parameters.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Jing Xu, Jianzhong Pei, Chuanqi Yan, Yuan Zhang, Hussain U. Bahia
Summary: This study investigates the rheological and chemical properties of two types of recycling oils. The results suggest that the content of recycling oil plays a significant role in the aging behavior of the binders.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Chuanqi Yan, Yuan Zhang, Hussain U. Bahia
Summary: This study investigates the role of asphalt binders and mix designs in the rutting resistance of asphalt mixtures. The results show the importance of proper selection of binder grade and inclusion of mix design variables for acceptable mixture rutting performance.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
Hui Chen, Yuan Zhang, Hussain U. Bahia
Summary: The study investigates the relationship between time-temperature superposition and material integrity-damage intensity curves, finding that superposition is not always applicable, but curves at various temperatures have inherent correlation, which can be used to predict fatigue behavior at other temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Yuan Zhang, Hui Chen, Hussain U. Bahia
Summary: This study evaluates the long-term performance of high RAP mixtures containing various softening oils and finds that these oils can be used to produce asphalt mixtures with similar performance to virgin mixtures containing the same aggregates. It is also highlighted that relying on short-term aging results alone to assess mixture performance can be risky as relative ranking of performance can change based on the level of aging.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Chuanqi Yan, Weidong Huang, Jing Xu, Huaguang Yang, Yuan Zhang, Hussain U. Bahia
Summary: This study introduces the use of Partial Least Squares (PLS) regression in Attenuated Total Reflection-Flourier Transformed Infrared (ATR-FTIR) spectroscopy analysis to determine the content of REOB in asphalt binders. The results show that an accurate prediction model can be derived using PLS regression analysis on the ATR-FTIR spectra of REOB blends.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
Haobai Zhong, Weidong Huang, Chuanqi Yan, Yuan Zhang, Quan Lv, Lijun Sun, Liyuan Liu
Summary: Hot in-place recycling (HIR) is an effective way to reuse reclaimed asphalt pavement (RAP) by heating the pavement at a high temperature. However, the high heating temperature may cause significant aging on the SBS modified asphalt used in the pavement. This study aims to understand the aging behavior of SBS modified asphalt in HIR projects and provides guidance for future projects.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Lu Zhou, Weidong Huang, Yuan Zhang, Quan Lv, Lijun Sun
Summary: This study investigated the effects of various asphalt modifications on bond and healing properties of asphalt binders through BBS and SFE tests. Results showed that gilsonite enhanced bond strength and surface energy, while high-density polyethylene significantly improved healing performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Yuan Zhang, Daniel Swiertz, Hussain U. Bahia
Summary: This study evaluates the performance properties of high RAP/RAS mixtures through blended binder tests, using different recycling agents for assessment and dose estimation. The results suggest that direct testing of recovered binders with recycling agents is an effective method for estimating the required initial dose. By correlating blended binder properties with mixture performance properties, it is possible to predict the long-term performance of high RAP/RAS mixtures under the testing conditions used in this study.
TRANSPORTATION RESEARCH RECORD
(2021)
Article
Computer Science, Interdisciplinary Applications
Zhen Leng, Zhifei Tan, Peng Cao, Yuan Zhang
Summary: In this study, the complex modulus of fine aggregate matrix (FAM) in asphalt mixture was predicted using finite element simulation coupled with random aggregate distribution algorithm and steady-state dynamic analysis. The interface layer between asphalt mastic and aggregate was found to significantly affect the viscoelastic performance of FAMs, and considering this layer improved prediction accuracy. Additionally, the steady-state dynamic method was shown to be 576 times more efficient than the conventional transient dynamic method in predicting the dynamic moduli and phase angles of FAMs, highlighting its potential for multi-scale modeling of asphalt mixture.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2021)
Article
Construction & Building Technology
Jiawei Zhang, Weidong Huang, Yuan Zhang, Qi Cai, Chuanqi Yan, Quan Lv
Summary: The study examined the durability of Open-Graded Friction Course (OGFC)-5 ultra-thin friction course mixtures with different gradations and asphalt contents. Denser gradations were found to improve raveling resistance and moisture susceptibility, but decrease rutting and stripping resistance. Increasing asphalt content improved resistance to raveling, moisture damage, stripping, and fracture, but extremely high asphalt content was not recommended. The smaller air voids and asphalt film thickness resulted in better resistance to raveling and moisture damage, while larger ones were required for resisting rutting, stripping, and fracture.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Hui Chen, Yuan Zhang, Hussain U. Bahia
Summary: The study investigates the effects of linear amplitude sweep (LAS) test on asphalt binder fatigue and proposes a fatigue life model that considers strain level and temperature effects. The model is validated using experimental data, offering a simpler and reliable method to predict fatigue life values at new temperatures based on recommended criteria.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Environmental Sciences
Xinxing Zhou, Taher Baghaee Moghaddam, Meizhu Chen, Shaopeng Wu, Yuan Zhang, Xiaorui Zhang, Sanjeev Adhikari, Xiao Zhang
Summary: This study focused on using fast pyrolysis to produce renewable bio-oil and biochar, with different temperatures and N-2 flow velocities affecting the yields. Results showed that higher pyrolysis temperature increased the purity of inorganic oxide in biochar, while increased N-2 flow velocity promoted the yield of carbon in biochar.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
