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
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
Long Li, Jun Chen
Summary: This study proposes a high-sensitivity nonlinear ultrasonic method using the second harmonic generation technique to investigate the early damage development and recovery processes in asphalt mixture during low-temperature thermal cycles. The results show significant damage behavior and recovery behavior in asphalt materials, which can be quantified by measuring the nonlinear parameters.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Yiming Yao, Yuanfeng Sun, Mengchao Zhai, Can Chen, Cong Lu, Jingquan Wang
Summary: The study explores the tension-stiffening phenomenon and reinforcing mechanisms in textile-reinforced ultra-high performance concrete specimens. Results show improved tensile behavior, stiffness, and ductility with increasing volume fractions of steel fibers, impacting load transfer mechanisms. The development of multiple cracking is analyzed quantitatively using digital image correlation, highlighting effective reinforcement strategies for TR-UHPC.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ahmet Teymen
Summary: This study indirectly determined the abrasion resistance of natural stones using practical methods. Estimation models were developed using simple regression analysis and nonlinear multiple regression analysis, with parameters such as hardness, strength, and physical properties showing significant impact on abrasion resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Qingxin Zhao, Yongshuai Gao, Weichao Guo, Yuxuan Shi, Yali Jia, Shuai Wang, Mengyi Li, Di Wang
Summary: This study produced inorganic foam materials using waste materials through chemical foaming, offering a promising alternative to flammable conventional organic foam materials. The preparation process was optimized, and the optimal experimental parameters resulted in satisfactory porosity, compressive strength, and dry density.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Review
Construction & Building Technology
Jixi Chen, Jinqing Jia, Mengyu Zhu
Summary: Due to the scarcity of fresh water and river sand, many countries are using seawater and sea sand as substitutes for concrete pouring to promote sustainability in the construction industry. However, the high chlorine content in seawater and sea sand can reduce the lifespan of concrete structures. By adding admixtures, this research explores the composition, properties, and mechanisms of chloride ion transport and binding in seawater sea sand concrete (SSC). It also examines the corrosion mechanism of seawater sea sand reinforced concrete (SSRC) and the impact of various admixtures on the hardening characteristics and corrosion resistance of SSC.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
S. Divya, R. Saranya, S. Praveenkumar
Summary: The increased consumption of construction materials has led to a global movement towards the use of eco-friendly materials. This study investigates the effects of adding graphene nanoplatelets and rice husk ash on cement. The experiments show that adding graphene nanoplatelets to cement increases its compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Do-Keun Lee, Kyung-Joon Shin, Kwang-Myong Lee
Summary: Water permeability tests are commonly used to evaluate crack width and self-healing performance of concrete. However, the viscosity of water makes it difficult to apply this test to narrow cracks. To overcome this limitation, a gas diffusion test has been proposed, but the different behaviors of water and gas passing through cracks may lead to differences in the estimation of crack width and healing performance.
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
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
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
Shixu Guo, Fei Liu, Jing Chen, Jianchao Yang, Xiang He
Summary: This paper investigates the dynamic response and failure mechanism of polyurea coated reinforced concrete (RC) under contact explosion. The results show that the coating dissipates blast energy through elastic deformation, plastic deformation, rupture, and debonding. Factors such as coating thickness and explosive placement location impact the blast resistance performance. Additionally, the blast resistance mechanism of the coating varies in different zones of the RC substrate.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Yang Li, Jinjie Chen, Jianxi Wang, Xianfeng Shi, Guangpeng Zhang, Haiyan Li
Summary: This study investigates the mechanical behavior of longitudinally continuous slab tracks reinforced with adhesive anchors under nonlinear temperature load through experimental and numerical investigations. The results show that factors such as compressive strength of concrete and borehole conditions significantly affect the reinforcement effectiveness.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Zhaoxu Lu, Kai Yao, Xinglong Li, Chenghao Yu
Summary: This paper presents a method of defect detection using ultrasound, signal processing, and neural network imaging, which improves the accuracy of quantitative imaging of internal defect morphology.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Elvis Baffoe, Ali Ghahremaninezhad
Summary: This paper discusses the effect of hydrogel on the microstructure and properties of carbonated wollastonite pastes. The results show that hydrogel can effectively reduce cracking induced by drying shrinkage in carbonated pastes, but it slightly affects the compressive strength of the pastes.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Y. G. Meng, X. J. Jiang, Q. X. Ran, S. Q. Wang, R. H. Han
Summary: The influence of cold deformation rate on the microstructure evolution and corrosion behavior of 430 ferritic stainless steel in sodium chloride environment was studied. It was found that low-speed deformation improved the corrosion resistance of the alloy by increasing low angle grain boundaries and low coincidence site lattices, promoting the uniform distribution of dislocations, and forming a more stable passivation film. On the other hand, high-speed deformation reduced the corrosion resistance of the alloy due to the uneven distribution of dislocation density inside the alloy.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Jianhao Li, Liyun Yang, Huanzhen Xie, Jun Gao, Fei Zhang, Siyu Chen, Yang Liu, Shuyue Zhang
Summary: This paper investigates the interfacial bonding performance between cluster basalt fiber (CBF) and cement mortar through fiber pull-out test, acoustic emission (AE) technology, and digital image correlation method (DICM). The results reveal that increasing the quantity of basalt fiber bundles and the fiber embedded depth can enhance the pull-out load, but the calculated bond strength significantly decreases. Under higher pull-out load, there are more hydrate particles on the surface of the pulled-out fiber bundles. Additionally, the variation rules of AE energy and accumulated ring count accurately predict different test stages, and the changing trend of interface strain can be accurately expressed by the change rule of surface strain.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Paria Khanmoradi, Amir Modarres
Summary: This study investigated the effect of cement kiln dust (CKD) as a waste filler on the properties of bituminous mastic compared to limestone powder (LSP) as a normal filler. The results showed that CKD filler exhibited higher elastic modulus and lower adhesion compared to LSP. The analysis of filler distribution indicated the highest homogeneity coefficient at an F/B ratio of 0.8. The SHRP and MSCR methods demonstrated that CKD had better rutting resistance than LSP.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
