Improvement of erosion-resistance of bio-bricks through fiber and multiple MICP treatments

被引：51

作者：

Liu, Shihui ^{[1
]}

Du, Kang ^{[2
]}

Huang, Wei ^{[3
]}

Wen, Kejun ^{[2
]}

Amini, Farshad ^{[2
]}

Li, Lin ^{[1
]}

机构：

[1] Tennessee State Univ, Dept Civil & Architectural Engn, Nashville, TN 37029 USA

[2] Jackson State Univ, Dept Civil & Environm Engn, Jackson, MS 39217 USA

[3] Chongqing Univ Sci & Technol, Sch Civil Engn & Architecture, Chongqing 401331, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 271卷

基金：

美国国家科学基金会;

关键词：

Microbially induced calcite precipitation (MICP); Bio-bricks; Multiple; Fiber; Enhancement; Accelerated Erosion; SOIL REINFORCEMENT; PERFORMANCE; CEMENTATION; STRENGTH; BEHAVIOR; BLOCKS;

D O I：

10.1016/j.conbuildmat.2020.121573

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Bio-bricks through MICP exhibits brittle properties and low water resistance. The goal of this study was to use fiber reinforcement and multiple MICP treatment to enhance the resistance of bio-bricks against accelerated water erosion. The reinforcing effects of synthetic fibers, coconut coir fibers, and multiple MICP treatment on properties of MICP-treated bio-bricks were investigated. Experimental results showed a significant improvement in the performance of bio-bricks could be achieved through fiber reinforcement and multiple MICP treatment. The flexure strength and strain of bio-bricks reinforced by 0.3% synthetic fibers increased from 1185 kPa to 1210 kPa, and 1.0% to 2.3%, respectively. The optimum coconut coir fiber content was around 0.6%-0.9%. Multiple MICP treatment method enhanced the resistance of bio-bricks against accelerated erosion significantly. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：11

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