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Article

A Study on the Mechanical Properties and Microcosmic Mechanism of Basalt Fiber Modified Rubber Ceramsite Concrete

by 1,2, 1,2, 1,2, 1,2, 1,2,*, 1,2,*, 3 and 4
1
School of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, China
2
Chongqing Key Laboratory of Energy Engineering Mechanics & Disaster Prevention and Mitigation, Chongqing 401331, China
3
School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
4
China Metallurgical Construction Engineering Group Construction, Ltd., Chongqing 400084, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Tao Wang
Buildings 2022, 12(2), 103; https://doi.org/10.3390/buildings12020103
Received: 31 December 2021 / Revised: 18 January 2022 / Accepted: 19 January 2022 / Published: 21 January 2022
(This article belongs to the Collection Buildings, Infrastructure and SDGs 2030)
In order to solve the problem of black pollution in the 21st century, a new type of rubber ceramsite concrete was prepared by pulverizing waste rubber tires into granules and adding aggregate to the ceramsite concrete. In order to reduce the weakening of mechanical properties of rubber, basalt fiber was used to modify the rubber. In this study, the compressive strength and splitting tensile strength of concrete specimens at days 3 and 28 were measured, the variation rule of compressive strength was explained based on the appearance of the microstructure, and the internal porosity of cubic specimens was characterized by the water absorption size. At the same time, an ultrasonic wave velocity test was used to test the uniformity and pore distribution of the block. The results showed that, with the increase in the rubber content, the compressive strength of rubber ceramsite concrete increases first and then decreases. The addition of basalt fiber can improve the compressive strength of the concrete. Water absorption is negatively correlated with compressive strength. Porosity is also negatively correlated with ultrasonic wave velocity. The basalt fiber length has no significant effect on the splitting tensile strength. View Full-Text
Keywords: ceramsite concrete; microscopic research; basalt fiber; compressive strength; rubber ceramsite concrete; microscopic research; basalt fiber; compressive strength; rubber
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MDPI and ACS Style

Bu, C.; Zhu, D.; Liu, L.; Lu, X.; Sun, Y.; Yan, Z.; Yu, L.; Wei, Q. A Study on the Mechanical Properties and Microcosmic Mechanism of Basalt Fiber Modified Rubber Ceramsite Concrete. Buildings 2022, 12, 103. https://doi.org/10.3390/buildings12020103

AMA Style

Bu C, Zhu D, Liu L, Lu X, Sun Y, Yan Z, Yu L, Wei Q. A Study on the Mechanical Properties and Microcosmic Mechanism of Basalt Fiber Modified Rubber Ceramsite Concrete. Buildings. 2022; 12(2):103. https://doi.org/10.3390/buildings12020103

Chicago/Turabian Style

Bu, Changming, Dongxu Zhu, Lei Liu, Xinyu Lu, Yi Sun, Zhitao Yan, Linwen Yu, and Qike Wei. 2022. "A Study on the Mechanical Properties and Microcosmic Mechanism of Basalt Fiber Modified Rubber Ceramsite Concrete" Buildings 12, no. 2: 103. https://doi.org/10.3390/buildings12020103

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