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标题：Permeability Studies On Quaternary Blended Bacterial Self Compacting Concrete
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作者：M.Sridevi ; P.Srinivasa Rao ; T.Seshadri Sekhar 等
期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2021
卷号：3
期号：2
页码：390-395
DOI：10.35629/5252-0302241243
语种：English
出版社：IJAEM JOURNAL
摘要：Self-compacting concrete (SCC) is widely used nowadays. Improvement in the permeability of SCC is important because durability is greatly dependant upon permeability. Pores are reduced by adopting low w/c ratio and more SCMs. Another method is the use of bacteria in concrete. Bacteria synthesiscalcite as a result of its metabolism. The calcite produced seals the pores and reduce permeability of concrete. In this study, an attempt has been made to investigate permeability characteristics of Quaternary Blended Bacterial Self-Compacting Concrete (QBBSCC), a blend of 40% cement, 10% microsilica, 25% flyash and 25% GGBFS. Bacillus Subtilis (MCC 2183) was used. For w/b ratios 0.3 & 0.4, superplasticiser dosage of 1.8 % & 1.6% by weight of binder respectively were used. Scanning Electron Microscope (SEM) analysis, water permeability and Rapid Chloride Permeability Test (RCPT) were carried out on QBBSCC and reference concrete without bacteria (QBSCC).QBBSCC exhibited better resistance to permeability than QBSCC.
关键词：Quaternary;self-compacting;concrete;bacteria;permeability