Effect of addition of micro-organism on the strength of concrete

被引：0

作者：

Department of Construction Engineering, Jadavpur University ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

机构：

来源：

Indian Concr J | 2006年 / 4卷 / 45-48期

关键词：

Cells - Compressive strength - Graph theory - Microbiology - Microorganisms - Mortar - Pore size - Scanning electron microscopy - Tensile strength;

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学科分类号：

摘要：

An attempt has been made to improve the compressive and tensile strengths of concrete using a novel thermophilic anaerobic micro-organism derived from a hot spring at Bakreshwar, West Bengal, India, at different cell concentrations. Micro-organisms along with the media were mixed with the required amount of water and subsequently added to the dry concrete mix. A significant increase in the compressive and tensile strength of the concrete was observed at a particular cell concentration of such micro-organism. The improvement of strength can be attributed to the microbiologically-induced special growth/filler within the pores of the concrete matrix as indicated by scanning electron micrographs. Similar growth / filler was also noticed in the cement-sand mortar with micro-organisms. Certain limitations of the on-going research are described.

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