Experimental Study on the Mechanics and Impact Resistance of Multiphase Lightweight Aggregate Concrete

Jian Meng, Ziling Xu, Zeli Liu, Song Chen, Chen Wang, Ben Zhao and An Zhou
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Jian Meng: School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
Ziling Xu: China Construction Third Bureau First Engineering Co., Ltd., Wuhan 430040, China
Zeli Liu: China Construction Shenzhen Decoration Co., Ltd., Wuhan 430068, China
Song Chen: School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
Chen Wang: School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
Ben Zhao: School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
An Zhou: School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China

Sustainability, 2022, vol. 14, issue 15, 1-15

Abstract: Multiphase lightweight aggregate concrete (MLAC) is a green composite building material prepared by replacing part of the crushed stone in concrete with other coarse aggregates to save construction ore resources. For the best MLAC performance in this paper, four kinds of coarse aggregate—coal gangue ceramsite, fly ash ceramsite, pumice and coral—were used in different dosages (10%, 20%, 30% and 40%) of the total coarse aggregate replacement. Mechanical property and impact resistance tests on each MLAC group showed that, when coal gangue ceramsite was 20%, the mechanical properties and impact resistance of concrete were the best. The compressive, flexural and splitting tensile strength and impact energy dissipation increased by 29.25, 19.93, 13.89 and 8.2%, respectively, compared with benchmark concrete. The impact loss evolution equation established by the two-parameter Weibull distribution model effectively describes the damage evolution process of MLAC under dynamic loading. The results of a comprehensive performance evaluation of four multiphase light aggregate concretes are coal gangue ceramsite concrete (CGC) > fly ash ceramsite concrete (FAC) > coral aggregate concrete (CC) > pumice aggregate concrete (PC).

Keywords: light aggregate concrete; drop hammer impact; Weibull distribution; waste usage (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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