際際滷shows by User: shalinisrotaswini / http://www.slideshare.net/images/logo.gif 際際滷shows by User: shalinisrotaswini / Thu, 11 Oct 2018 06:32:50 GMT 際際滷Share feed for 際際滷shows by User: shalinisrotaswini Ijsrp p8165 (1) /slideshow/ijsrp-p8165-1/119076632 ijsrp-p81651-181011063250
The objective of the present investigation is to obtain the influence of facultative bacteria (Bacillus Cereus) on the strength of concrete made with and without bacteria. Three different cell concentrations (102,107, 1010 cells/ml) of bacteria are used in making the concrete mixes. In making concrete, one control specimen is prepared and three more mixes are also prepared by voluntarily replacing of 10, 20 and 30 litres of bacterial nutrient medium with water. Split Tensile strength test is performed at the age of 7, 14 and 28 days. Test results indicate that inclusion of Bacillus Cereus in concrete enhances the compressive strength. Maximum 25.64% increase in compressive strength is observed with 107 cells/ml of bacteria. The improvement in strength takes place due to microbiologically induced calcite precipitation (MICP). MICP is a layer of highly impermeable calcite deposition on the surface of already existing concrete layer. The effect of MICP is quantified by X-Ray Diffraction (XRD) analysis and visualized by Scanning Electron Microscopy (SEM).]]>
The objective of the present investigation is to obtain the influence of facultative bacteria (Bacillus Cereus) on the strength of concrete made with and without bacteria. Three different cell concentrations (102,107, 1010 cells/ml) of bacteria are used in making the concrete mixes. In making concrete, one control specimen is prepared and three more mixes are also prepared by voluntarily replacing of 10, 20 and 30 litres of bacterial nutrient medium with water. Split Tensile strength test is performed at the age of 7, 14 and 28 days. Test results indicate that inclusion of Bacillus Cereus in concrete enhances the compressive strength. Maximum 25.64% increase in compressive strength is observed with 107 cells/ml of bacteria. The improvement in strength takes place due to microbiologically induced calcite precipitation (MICP). MICP is a layer of highly impermeable calcite deposition on the surface of already existing concrete layer. The effect of MICP is quantified by X-Ray Diffraction (XRD) analysis and visualized by Scanning Electron Microscopy (SEM).]]> Thu, 11 Oct 2018 06:32:50 GMT /slideshow/ijsrp-p8165-1/119076632 shalinisrotaswini@slideshare.net(shalinisrotaswini) Ijsrp p8165 (1) shalinisrotaswini The objective of the present investigation is to obtain the influence of facultative bacteria (Bacillus Cereus) on the strength of concrete made with and without bacteria. Three different cell concentrations (102,107, 1010 cells/ml) of bacteria are used in making the concrete mixes. In making concrete, one control specimen is prepared and three more mixes are also prepared by voluntarily replacing of 10, 20 and 30 litres of bacterial nutrient medium with water. Split Tensile strength test is performed at the age of 7, 14 and 28 days. Test results indicate that inclusion of Bacillus Cereus in concrete enhances the compressive strength. Maximum 25.64% increase in compressive strength is observed with 107 cells/ml of bacteria. The improvement in strength takes place due to microbiologically induced calcite precipitation (MICP). MICP is a layer of highly impermeable calcite deposition on the surface of already existing concrete layer. The effect of MICP is quantified by X-Ray Diffraction (XRD) analysis and visualized by Scanning Electron Microscopy (SEM). <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ijsrp-p81651-181011063250-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> The objective of the present investigation is to obtain the influence of facultative bacteria (Bacillus Cereus) on the strength of concrete made with and without bacteria. Three different cell concentrations (102,107, 1010 cells/ml) of bacteria are used in making the concrete mixes. In making concrete, one control specimen is prepared and three more mixes are also prepared by voluntarily replacing of 10, 20 and 30 litres of bacterial nutrient medium with water. Split Tensile strength test is performed at the age of 7, 14 and 28 days. Test results indicate that inclusion of Bacillus Cereus in concrete enhances the compressive strength. Maximum 25.64% increase in compressive strength is observed with 107 cells/ml of bacteria. The improvement in strength takes place due to microbiologically induced calcite precipitation (MICP). MICP is a layer of highly impermeable calcite deposition on the surface of already existing concrete layer. The effect of MICP is quantified by X-Ray Diffraction (XRD) analysis and visualized by Scanning Electron Microscopy (SEM).
Ijsrp p8165 (1) from Shalini Srotaswini
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