巴氏孢杆菌对压缩土试件强度特性的影响

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
E. Bernat-Masó, L. Gil, C. Escrig, J. Barbé, P. Cortés
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引用次数: 4

摘要

诱导方解石的微生物沉积以提高夯土的性能是一个必须在具有代表性的环境中进行分析的研究领域。这种分析必须考虑压实力、粒度分布和固化工艺作为生产变量。本文研究了在压缩土块中加入特定细菌巴氏芽孢杆菌的效果以及生产变量的影响。对80个试件进行了单轴压缩试验和直剪试验。结果表明:方解石的沉淀与粘土/粉土的干燥过程相互作用,降低了粘土/粉土的抗压强度、表观黏聚力和摩擦角;最后,在高湿度环境中固化的样品中更可能出现的细菌活动往往会降低膨胀效应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens
Microbial biodeposition of calcite induction for improving the performance of rammed earth is a research area that must be analysed in a representative environment. This analysis must consider the compaction force, particle size distribution and curing process as production variables. This paper investigates the effects of adding specific bacteria, Sporosarcina Pasteurii , into compressed earth cubes and the effect of production variables. Uniaxial compressive tests and direct shear tests have been conducted for 80 specimens. The results indicate that calcite precipitation interacts with the drying process of clay/silt resulting in reducing the compressive strength, the apparent cohesion and the friction angle. Finally, bacterial activity, which is more likely in samples cured in a high humidity environment, tends to reduce the dilatancy effect.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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