Article
Materials Science, Multidisciplinary
Zhanqi Cheng, You Wu, Liusheng Chu, Jiyu Tang, Chengfang Yuan, Hu Feng
Summary: This paper applies a semi-discrete model based on Peridynamics to simulate the fracture behavior of functionally graded ECC beams, discusses the convergence of the model and parameter selection, validates the model effectiveness, and explores the effect of initial crack location on fracture behavior.
ACTA MECHANICA SOLIDA SINICA
(2022)
Article
Construction & Building Technology
Hassan Noorvand, Gabriel Arce, Marwa Hassan
Summary: This study presents a novel thickness design framework for engineered cementitious composites (ECCs) to predict the fatigue life of ECC pavements. The framework integrates experimental models, finite element analysis, and empirical stress equivalency functions. Two general thickness design equations were developed for the elastic and plastic regimes of ECCs. The results show that the proposed framework provides a more accurate representation of the service life of ECC pavements compared to previous design frameworks.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Construction & Building Technology
Amin Al-Fakih, Bashar S. Mohammed, M. S. Liew
Summary: Rubberized ECC has been utilized to address environmental issues related to improper disposal of tires, with fly ash being a common material and modern methods like nano-silica showing promise in improving the drawbacks of rubberized ECC.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Xing-yan Shang, Zhong-guan Zhou, Kai Yan, Jing-hui Wu, Ling-zhi Li, Jiang-tao Yu
Summary: This study investigated the interfacial fracture properties of engineered cementitious composites (ECC) and fire-damaged concrete using bi-material wedge splitting specimens. The effects of maximum temperature and interfacial roughness on damage mode, fracture toughness, and fracture energy were studied. The results showed that the damage mode changed from adhesive failure to cohesive failure at a maximum temperature of 400 degrees C and with rough interface. The fracture toughness and fracture energy were the highest at 400 degrees C but decreased with increasing temperature. They initially increased and subsequently decreased with increasing roughness, with maximum values obtained at 3 mm interface roughness.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Cong Lu, Jiajie Wang, Christopher K. Y. Leung, Yiming Yao, Bofan Yu
Summary: In this study, a micromechanics-based crack propagation model for ECC under bending load is developed to guide the design of flexural performance of ECC. The entire crack propagation process is simulated by considering the microstructure of ECC and the crack propagation criterion, and the simulated results agree well with experimental results. Insights from this model can facilitate the design of ECC members with excellent bending properties through fiber tailoring and surface treatment.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Jinsheng Han, Jinlong Pan, Xiaomeng Ma, Jingming Cai
Summary: This paper analyzes the mechanical and sensing properties of self-sensing engineered cementitious composites (ECC) and concludes that self-sensing ECC has desirable sensing performance and high ductility in structural health monitoring. The sensor type shows better performance compared to coating and bulk types.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Burhan Alam, Ismail Ozgur Yaman
Summary: The study investigated the effects of mineral admixtures and aggregate size on the fatigue performance of ECC mixtures, and proposed a prediction method for fatigue life. It was found that the choice of different admixtures and aggregate sizes can impact the fatigue life of ECC mixtures.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Zongping Chen, Yuhan Liang, Yuanzheng Lin, Jingming Cai
Summary: With the development of modern transportation, the recycling and reusing of waste tires have become a global concern. This study aimed to develop impact-resistant engineered cementitious composites (ECC) using waste tire rubber as aggregate. The mechanical behaviors of rubber-modified ECC were investigated, and the impact tests were conducted under different environmental temperatures and impact heights. The results showed that rubber-modified ECC is more suitable as impact-resistant material in cold regions.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
He Zhu, Duo Zhang, Yichao Wang, Tianyu Wang, Victor C. Li
Summary: The objective of this research is to develop a self-stressing ECC, which can automatically induce pressure onto the repair material, by utilizing a combination of super absorbent polymer (SAP), shrinkage reducing agent (SRA), and calcium sulphoaluminate cement/expansive additive (CSA). The deliberate combination of SRA and CSA tailors the maximum expansion and expansion loss, enhancing the durability of ECC for infrastructure repair in aggressive environments.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Chenlong Lin, Siyu Wang, Wentao Ma, Yuhong Yan, Yiyan Lu
Summary: In this study, a quick setting seawater sea-sand engineered cementitious composite (SS-ECC) was prepared using sodium aluminate (NaAlO2, NA). The effects of the amount of NA and different types of water (seawater and freshwater) on the setting time, compressive strength, flexural strength, and tensile properties of the SS-ECC were studied. The incorporation of NA reduced the setting time and slightly improved the early strength of the SS-ECC, but too much NA decreased the late strength. The inclusion of NA enhanced the ultimate tensile strain of the SS-ECC, making it an ideal elastoplastic material.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Fengjiang Qin, Xinyan Wei, Youfu Lu, Zhigang Zhang, Jin Di, Zhiwei Yin
Summary: The study investigates the flexural behavior of ECC-RC composite beams, focusing on the thickness and shape of the ECC layer. ECC has proven to be an ideal material for enhancing the flexural capacity of reinforced concrete beams. The composite beams show higher load values, better ductility, and energy absorption capacity compared to RC beams. The U-shaped ECC layer composite beam demonstrates superior crack limitation and synergy with reinforcement. Formulas for the flexural capacity of ECC-RC composite beams are derived based on the strain-hardening characteristics of ECC and force equilibrium conditions.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Jeong-Il Choi, Se -Eon Park, YoungMin Kim, Kanghyeok Yang, Yun Yong Kim, Bang Yeon Lee
Summary: This study investigates the compressive strength and tensile behavior of engineered cementitious composites reinforced by selvage short fibers. The results show that the tensile strength and strain capacity highly depend on the fiber types, and ECC using selvage short fibers has high sustainability.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Tianyu Wang, Duo Zhang, He Zhu, Baosong Ma, Victor C. Li
Summary: This study experimentally investigated the durability of engineered cementitious composites (ECC) in sewage environments. The results showed that ECC had better strength and dimensional stability compared to conventional mortar, making it a durable material for sewer pipeline construction.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Peng Zhang, Qiaoyi Han, Jingjiang Wu, Yong Zhang, Tianhang Zhang
Summary: The effects of nano-SiO2, heating temperatures, and cooling measures on the physical, mechanical, and microscopic properties of engineered cementitious composites (ECC) after exposure to high temperatures were evaluated. The addition of nano-SiO2 effectively enhanced the mechanical characteristics of the composites at lower temperatures, but the performance decreased at higher temperatures. The cooling measures also influenced the appearance and strength of the composites after exposure to high temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Dan Wang, Jialing Che, Haifeng Liu, Siew Choo Chin
Summary: Economical desert sand engineered cementitious composites (DS-ECCs) were developed using cement, fly ash, local desert sand, water, low-cost PVA fibers, and chemical additives. The mechanical behavior of DS-ECCs was evaluated and compared to river sand-based ECCs. The results showed that DS-ECCs had superior tensile strength, compression strength, and ductility. Additionally, the DS-ECCs exhibited improved flexural properties and toughness. These findings enhance the understanding and application of DS-ECCs in engineering projects.
Article
Environmental Sciences
Herek L. Clack
AEROSOL AND AIR QUALITY RESEARCH
(2015)
Article
Energy & Fuels
Tian Xia, Herek L. Clack
Editorial Material
Energy & Fuels
Yongchun Zhao, Yong-Chil Seo, Herek L. Clack
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2017)
Article
Energy & Fuels
James C. Hower, Herek L. Clack, Madison M. Hood, Shelley G. Hopps, Gerald H. Thomas
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2017)
Article
Engineering, Environmental
Herek L. Clack
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2017)
Article
Chemistry, Applied
Herek L. Clack
FUEL PROCESSING TECHNOLOGY
(2018)
Article
Construction & Building Technology
Irina Susorova, Meysam Tabibzadeh, Anisur Rahman, Herek L. Clack, Mahjoub Elnimeiri
ENERGY AND BUILDINGS
(2013)
Article
Engineering, Environmental
Guangxing Lin, Joyce E. Penner, Herek L. Clack
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2014)
Article
Environmental Sciences
Herek L. Clack
AIR QUALITY ATMOSPHERE AND HEALTH
(2014)
Article
Physics, Applied
T. Xia, A. Kleinheksel, E. M. Lee, Z. Qiao, K. R. Wigginton, H. L. Clack
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Construction & Building Technology
Mingfeng Xu, Herek Clack, Tian Xia, Yi Bao, Kai Wu, Huisheng Shi, Victor Li
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Herek L. Clack
JOURNAL OF ELECTROSTATICS
(2020)
Article
Engineering, Environmental
T. Xia, M. Yang, I Marabella, E. M. Lee, B. Olson, D. Zarling, M. Torremorell, H. L. Clack
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Energy & Fuels
Herek L. Clack
FRONTIERS IN ENERGY RESEARCH
(2017)
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)