辽宁工程技术大学学报（自然科学版）2024，Vol.43Issue(3)：304-309,6.DOI:10.11956/j.issn.1008-0562.20230286
沸石增强砂土微生物固化效果研究
Study on the effect of zeolite-enhanced sand microbial solidification
摘要
Abstract
To enhance the microbial solidification of sand,zeolite was considered as an adsorbent material due to its porous properties.Involving macroscopic physical and mechanical tests as well as micro-fine observations to systematically analyze the strengthening effects of zeolite on microbial solidified sand.The results indicate that zeolite significantly improves the bacteria fixation rate during the microbial reinforcement process of sand.Compared to conventional microbial solidification,the inclusion of zeolite increased the bacteria fixation rate by approximately 5.5 times,enhanced the compressive strength by 39.35%,and reduced the permeability coefficient by 71.94%.The addition of zeolite not only increased the quantity of calcium carbonate precipitate but also improved its distribution uniformity.Furthermore,the calcium carbonate precipitates around the zeolite effectively bridged the adjacent sand particles,enhancing the structural integrity between the sand particles and the overall integrity of the samples.These findings provide a reference for further optimization of MICP(microbially induced calcite precipitation,MICP)technology.关键词
微生物诱导碳酸钙沉积/沸石/固菌率/微生物固化/碳酸钙生成量Key words
microbially induced calcite precipitation/zeolite/fixation rate/microbial solidification/calcium carbonate production分类
建筑与水利引用本文复制引用
朱文羲,邓华锋,李建林,熊雨,程雷,黄小芸,陈勇琪..沸石增强砂土微生物固化效果研究[J].辽宁工程技术大学学报（自然科学版）,2024,43(3):304-309,6.基金项目
国家自然科学基金项目(U2034203 （）
U22A20600) （）
湖北省自然科学基金创新群体项目(2020CFA049) （2020CFA049）
