@article{10902/36847,
year = {2025},
month = {8},
url = {https://hdl.handle.net/10902/36847},
abstract = {200 million tons of coal fly ash waste are deposited annually in China, which poses a severe environmental threat. Hence, a sustainable fly ash-based lightweight aggregate (FA-LWA) with a core-shell structure was developed to produce lightweight concrete (LWC) structures. This study investigated the shear performance of FA-LWC structures. The experimental results show that compared to shale-based LWC, FA-LWC exhibited increases in cracking strength (+31.6%), fracture energy (+18.9%), and shear strength (+27.4%). In addition, the experimental results demonstrate that incorporating 1.0vol% glass fibers (GFs) into LWC beams leads to a 7.4% improvement in the cracking load, a 33.6% enhancement in fracture energy, and a substantial 41.0% increase in shear strength, highlighting the significant role of GFs in improving the shear performance of LWC beams. Among the five selected international standards, Eurocode 2 (EN 1992-1-1) and CEB-FIP-2022 provided a more accurate prediction for the shear strength of LWC beams prepared with FA-LWC. This study addresses the current lack of experimental data on the shear performance of cold-bonded FA-LWA concrete structures, offering new insights into their failure modes and design implications.},
organization = {This study was financially supported by the Guangdong Basic and Applied Basic Research Foundation Fund (2024A1515240013), the Hong Kong Innovation and Technology Fund (BBY3), the Carbon Neutrality Fund (WZ7M) from the Hong Kong Polytechnic University. Dr. Wu also appreciates the support of the PolyU Postdoc Matching Fund Scheme (1-W32U).},
publisher = {Elsevier Ltd},
publisher = {Construction and Building Materials, 2025, 487, 142139},
title = {Shear performance of lightweight concrete structures prepared with eco-friendly lightweight aggregates},
author = {Wu, Weiwei and Zhang, Chunpeng and He, Xiongjun and Tang, Zhiyi and Liao, Qiao and Zhou, Ao and Lu, Jianxin and Thomas García, Carlos and Poon, Chi-Sun},
}