Article
Construction & Building Technology
Yu Xue, Peilong Li, Chenxi Zhao, Yong Wang, Chao Sun, Muhammad Dawood Khan
Summary: This study used the skid resistance analysis system to investigate the decay characteristics of pavement friction on contaminated roads and the impact of aeolian sand on skid resistance. The results reveal that aeolian sand fills in the macrotexture, weakening the road's skid resistance with adverse long-term effects. It is advised to clean the road surface regularly when the sand reaches 0.625 kg/m(2) to maintain its original skid resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yulin He, Xuan Yang, Shenqing Xiao, Pengfei Liu, Guoyang Lu, Chao Xing, Zepeng Fan, Wei Sheng, Dawei Wang
Summary: Driving speed, pavement type, surface characteristics, intermediate media, and tire properties are important factors that impact the frictional behavior between tire and pavement. A lack of equipment that can simulate the skid resistance behavior of high-speed vehicles based on real tire in the laboratory has been identified. To address this deficiency, High-speed Friction Testing (HSFT) equipment was developed, which utilizes real tire loading and provides reliable results for multi-factor coupling skid resistance tests. The results indicate that driving speed, water film thickness, and tire load have a negative correlation with skid resistance, with water film thickness having the greatest influence.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Guoyang Lu, Yulin He, Zhen Leng, Dawei Wang, Bin Hong, Jianpin Xiong, Jincheng Wei, Markus Oeser
Summary: The study investigated the influence of different surface texturing methods on the wearing resistance of concrete pavement and found that exposed aggregate and sealing treatments provide the best long-term polishing resistance for plastic and hardened concrete, respectively.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Renata de Souza Sales, Francisco Heber Lacerda de Oliveira, Lucius de Albuquerque Prado
Summary: This study analyzed the macrotexture depth and friction coefficient of three different pavement surfaces at Brazilian airports, before and after rubber removal procedures. The results showed that rubber removal is effective in maintaining runway surfaces, but does not significantly increase the measured parameters by more than 50%.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Miao Yu, Zhi Yang, Zhanping You, Yansheng Luo, Jue Li, Liming Yang
Summary: An orthogonal test was designed to evaluate the skid resistance performance of asphalt pavement under cumulative wheel load and overload. Lab tests were conducted using the Tire pavement Dynamic Friction Analyzer (TDFA) to acquire real-time data of tire-pavement friction coefficient and pavement textures. The results showed that the pavement friction coefficients (COF) increased first and then decreased, while Mean Profile Depth (MPD) values fluctuated significantly. There was also a poor correlation between COF and MPD values. Additionally, the deterioration rate of pavement dynamic friction coefficient was faster and the final value was lower when heavy traffic was applied in the early stage compared to the middle and late stage of wear. The designed orthogonal test demonstrated the significant impact of total traffic volume, occurrence interval, and duration of heavy traffic on the COF value.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Xingjie Xue, Xin Zheng, Bowen Guan, Jianan Liu, Donghai Ding, Rui Xiong, Hua Zhao, Fulu Wei
Summary: This study investigates the feasibility of using high-alumina refractory waste as alternative aggregates in high-friction surface treatment (HFST). It suggests that silicon carbide-mullite brick (SMB) is a suitable replacement aggregate, providing friction comparable to calcined bauxite. The study also explores the skid resistance mechanism of HFST based on the macro and micro textures of the aggregate, providing insights for the preparation of low-cost and low-energy HFST using environmentally friendly aggregates.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Characterization & Testing
Ross McCarthy, Gerardo Flintsch, Edgar de Leon Izeppi
Summary: This study compares friction measurements obtained using different devices and explores the influence of macrotexture on friction, as well as the use of orthogonal regression equations for interconversion. The findings suggest that smooth tires are more sensitive to changes in microtexture, while SCRIM and ribbed tires are more sensitive to changes in macrotexture. Utilizing the IFI FR60 conversion can improve the correlation of measurements, highlighting the importance of macrotexture in smooth tire friction dependence.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Chemistry, Physical
Pawel Gierasimiuk, Marta Wasilewska, Wladyslaw Gardziejczyk
Summary: This study compared the skid resistance of concrete pavements textured with different methods, with exposed aggregate concrete (EAC) showing the most favorable results among all tested pavement types.
Article
Chemistry, Physical
Yuanjiao Hu, Zhaoyun Sun, Yuxi Han, Wei Li, Lili Pei
Summary: This study investigated the relationship between pavement texture structure and skid resistance performance, and proposed an optimized Bayesian-LightGBM model for more accurate evaluation of skid resistance. The results showed that ten macro-texture features contribute to the evaluation of skid resistance to varying degrees, and OGFC mixture specimens have better skid resistance compared to AC specimens.
Article
Engineering, Mechanical
Can Chen, Haoyuan Luo, Siyu Chen, Yangzezhi Zheng, Xiyin Liu, Tao Ma, Leyi Zhu
Summary: The Hilbert-Huang Transformation was used to extract relevant parameters from the pavement profile as a potential method for predicting friction coefficients with pavement texture parameters. A correlation analysis was conducted between these parameters and friction, considering the influence of velocity. A multiple linear regression model was developed to explore friction prediction, which demonstrated a reliable method for predicting friction coefficients.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Construction & Building Technology
T. F. Fwa, L. Chu
Summary: The paper introduces the concept of Skid Resistance State for highway pavements, stating that the skid resistance characteristics of a pavement can be fully described by a computer simulation model. This concept has significant implications for functional pavement design, friction maintenance management, and harmonizing skid resistance measurements by different devices.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Yu Xue, Peilong Li, Chenxi Zhao, Yong Wang, Muhammad Dawood Khan, Nick Thom
Summary: This research examines the wearing effect of aeolian sand on asphalt pavements through experimental evaluation and testing methods. It proposes a wearing rate and prediction model for the pavement with sand particles. The results show that the presence of sand leads to pavement wearing, and the lubricating and wearing effects of sand on the pavement are predicted based on changes in texture and skid resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Miao Yu, Yao Kong, Zhanping You, Jue Li, Liming Yang, Lingyun Kong
Summary: This study used a finite element model and ABAQUS software to investigate the friction performance between radial tires and asphalt pavement. The effects of pavement texture, tire parameters, and water film thickness on the tire-pavement contact force were analyzed through steady state rolling analysis and dynamic explicit analysis. The results provide theoretical references for safe driving.
Article
Green & Sustainable Science & Technology
Matus Kovac, Matej Brna, Peter Pisca, Dusan Jandacka, Martin Decky
Summary: The primary goal of this article was to analyze the effect of texture on skid resistance. Measurements were made on three different groups of surfaces. The test results showed that the relationship between texture and skid resistance varied depending on the type of surface, with a relatively strong relationship found on reference surfaces but a shallow relationship found on aggregate and asphalt specimens. Further research with a larger sample size is recommended to explore different levels of texture.
Article
Engineering, Mechanical
Yu Xue, Peilong Li, Shuangquan Jiang, Nick Thom, Xinyuan Yang
Summary: The laboratory tests were conducted to analyze the effects of particulate contaminants on the contact characteristics of tires and pavements on desert roads. Image analysis and generalized regression neural networks (GRNN) were used to reconstruct a three-dimensional model and predict the texture depth of asphalt pavements. The established skid resistance decay prediction models showed that sand quantity, temperature, and wearing cycles all influenced skid resistance, with sand having the greatest impact. The skid resistance model provided a reliable prediction of friction capacity and served as a reference for maintenance time determination in desert areas.
Article
Engineering, Environmental
Baowen Lou, Diego Maria Barbieri, Marco Passavanti, Cang Hui, Akshay Gupta, Inge Hoff, Daniela Antunes Lessa, Gaurav Sikka, Kevin Chang, Kevin Fang, Louisa Lam, Brij Maharaj, Navid Ghasemi, Yaning Qiao, Solomon Adomako, Ali Foroutan Mirhosseini, Bhaven Naik, Arunabha Banerjee, Fusong Wang, Andrew Tucker, Zhuangzhuang Liu, Kasun Wijayaratna, Sahra Naseri, Lei Yu, Hao Chen, Benan Shu, Shubham Goswami, Prince Peprah, Amir Hessami, Montasir Abbas, Nithin Agarwal
Summary: This study investigates the perception of air pollution in individuals from ten countries and finds that the reduction in pollutant concentration was clearly perceived by all populations, with the most noticeable changes in India and Italy, while the smallest variations were observed in China and Norway. Among all demographic indicators considered, gender was the only statistically significant factor.
Article
Engineering, Environmental
Wenxiu Jiao, Aimin Sha, Zhuangzhuang Liu, Wei Li, Lei Zhang, Shuzhou Jiang
Summary: Electrically heated roads are used as a replacement for chemicals and mechanical devices to ensure mobility and traffic safety in winter weather. This study recommends the best system parameters for an electrical-thermal system based on experiments and neural network evaluations, aiming to improve snow melting efficiency and mechanical durability of the pavement. The research enriches the theory of thermodynamic structural design for snow melting pavement systems through laboratory experiments and predictive modeling.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Yangsen Cao, Aimin Sha, Zhuangzhuang Liu, Fan Zhang, Jiarong Li, Hai Liu
Summary: Substituting steel slag for mineral materials in road construction can bring potential economic and environmental benefits. However, there are few studies on the thermal conductivity characterization of steel slag asphalt mixture (SSAM). This study evaluated the thermal conductivity of SSAM and found that the steel slag content affects the thermal conductivity and road performance. Active minerals in steel slag enhance the thermal conductivity, while surface protrusions and micropores may hinder it.
Article
Education & Educational Research
Nicholas Fabiano, Stanley Wong, Anthony Miller, Zhuangzhuang Liu, Jess G. Fiedorowicz
Summary: The study describes changes in attitudes and confidence in integrating psychiatry into other areas of medicine over time during clinical clerkship. The results show that medical students feel more confident providing psychiatric care at the end of their clinical clerkship. However, there was no significant increase in attitude scores.
ACADEMIC PSYCHIATRY
(2022)
Article
Green & Sustainable Science & Technology
Yangsen Cao, Jiarong Li, Aimin Sha, Zhuangzhuang Liu, Fan Zhang, Xinzhou Li
Summary: This study explores the design of a new piezoelectric energy harvester (PEH) from multiple perspectives, considering engineering applications and energy output. A harvester package structure that utilizes 100% of the vehicle load is proposed. The study investigates the effects of load characteristics and arrangement of piezoelectric ceramic array on the piezoelectric output, and tests the piezoelectric response and long-term service performance of the harvester under indirect stress in a pavement structure. The results show that load level and speed significantly affect the harvester's piezoelectric output, with the proposed PEH achieving higher power density compared to similar devices.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Yangsen Cao, Xinzhou Li, Zhuangzhuang Liu, Jiarong Li, Fan Zhang, Baozeng Shan
Summary: The use of salt-storage asphalt mixtures (SSAM) for ice and snow removal can prevent damage to roads and the environment, however, snow-melting salts can impact the performance of asphalt mixtures. The study found that the higher the content of snow-melting salt, the more significant the decrease in SSAM performance. Compared to the SBS group, the group using high-elastic asphalt (HEA) with high-elastic agent TPS showed better mechanical properties, and snow-melting salt had a positive impact on anti-skid performance but a negative impact on anti-spalling performance. Considering comprehensive performance, the HEA group outperformed the SBS group, with HEA50 demonstrating the best performance.
Article
Chemistry, Physical
Wenxiu Jiao, Aimin Sha, Zhuangzhuang Liu, Shuo Li
Summary: The study aims to investigate the impact of light-burned dolomite powders (LBD) on ordinary Portland cement (OPC) and assess the influence of LBD dosage and fineness levels on the mechanical and hydration properties of OPC. Results show that the flexural and compressive strength of LBD/OPC samples are higher than those of the reference sample. In particular, the B-LBD dosage with 1.5-2.5 wt% significantly improves the strength of cement-based materials. The main mineral components of LBD, MgO and CaCO3, react with water and C3A to form Mg(OH)2 and hydrated calcium carboaluminate, respectively, preventing the conversion of AFt to AFm.
Article
Polymer Science
Yangsen Cao, Jiarong Li, Zhuangzhuang Liu, Xinzhou Li, Fan Zhang, Baozeng Shan
Summary: Sprinkled snow melting salt can negatively affect asphalt pavement and the environment. However, salt storage pavement technology can alleviate these issues. The addition of snow melting salt can change the general and rheological properties of asphalt mastic. High elastic polymers have a significant impact on asphalt mastic, reducing creep and improving performance.
Article
Green & Sustainable Science & Technology
Wenxiu Jiao, Aimin Sha, Zhuangzhuang Liu, Wei Jiang, Liqun Hu, Wen Qin
Summary: Electrical-thermal technique is a promising method for melting snow on asphalt pavement. This study proposes a method to improve melting efficiency by combining thermal conductive asphalt concrete and electrical-thermal system. The results show that the thermal conductivity of the TCAC reaches a peak value when the steel slag volume content is 60%, and the road performance parameters meet the specification requirements. The snow melting effect of TCAC is better than that of ordinary asphalt concrete, and the surface temperature of the test road can be well predicted and evaluated by a neural network with an error within 1 degree Celsius.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
Zhuangzhuang Liu, Lin Li, Jie Gao, Yizheng Li, Baowen Lou, Diego Maria Barbieri, Tong Ye, Aimin Sha
Summary: In cold climates, early frost damage poses a threat to cementitious materials, leading to their deterioration. This study divided the cement hydration process into five stages and froze fresh cement pastes at different temperatures to investigate the hazard and failure mechanism of cement paste due to early frost damage. Mechanical tests and X-ray computed tomography scanning were conducted to characterize the development of frost-related damage. The results revealed that the initial frost time has a greater effect on strength growth than freezing temperature, and frost-related damage can cause complete damage to the cement matrix before initial setting.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Yizheng Li, Aimin Sha, Zhen Tian, Yangsen Cao, Xinzhou Li, Zhuangzhuang Liu
Summary: Ice on the pavement hinders traffic capacity and driving safety. Traditional anti-icing methods have negative impacts on the pavement structure and environment, and need improvement. Pavement superhydrophobic coating offers a low-cost and environmentally friendly anti-icing solution, but there is a lack of unified understanding in terms of material preparation strategies and evaluation methods. This review addresses the anti-icing mechanisms, material components, construction processes, performance evaluation methods, and emphasizes the importance of improving evaluation methods, modifying materials, and constructing practical applications for the development of pavement superhydrophobic coating.
JOURNAL OF MATERIALS SCIENCE
(2023)
Review
Construction & Building Technology
Lin Li, Huan Wei, Yazhen Hao, Yizheng Li, Wei Cheng, Yusuf Abshir Ismail, Zhuangzhuang Liu
Summary: Carbon nanotube (CNT) is a commonly used functional nanomaterial in self-sensing cementitious composites, which can enhance the electrical, thermal, and mechanical coupling properties of the structure for stress and strain response and perception. CNT reinforced cementitious composites have excellent sensing performance, strong structural integrity, long service life, and easy installation and maintenance, making them widely concerned in the production of intelligent engineering materials worldwide.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Proceedings Paper
Energy & Fuels
Liu Zhuangzhuang, Wang Xiang, Chen Guofu, Mu Xiaobin
Summary: This paper proposes a PMU measurement data processing method for the two-stage identification algorithm of integrated load model parameters. By screening, pre-processing, coarse screening, and denoising the PMU measurement data, the quality of PMU data is improved, thus enhancing the accuracy of the parameter identification algorithm.
2022 6TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY ENGINEERING, ICPEE
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Zhuangzhuang Liu, Xueqin Tian, Tong Xu, Xinlei Wang, Haijing Zhang, Zhifan Liu, Xiaohui Liu
Summary: President Xi Jinping announced China's determination to achieve carbon neutrality by 2060 and emphasized the key direction of future development as low-carbon and clean energy transformation. In this context, promoting the capacity market mode has become an important issue in the construction of the electricity market. This paper summarizes the development path of China's power generation capacity market, reviews the development stages and context of the domestic capacity market, and discusses the reform process and modes of the capacity market in typical countries, providing suggestions for the popularization of a capacity market mechanism in China.
2022 4TH INTERNATIONAL CONFERENCE ON SMART POWER & INTERNET ENERGY SYSTEMS, SPIES
(2022)
Article
Chemistry, Multidisciplinary
Yangsen Cao, Zhuangzhuang Liu, Wenjia Song
Summary: Nano-alumina can be used as a modifier for asphalt mixture to improve its performance, except for low-temperature properties. It enhances high-temperature properties, water stability, and fatigue performance. The most balanced performance of the modified asphalt mixture is achieved with a nano-alumina content of 9%.
NANOTECHNOLOGY REVIEWS
(2022)
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)
