Pub. Date | : Apr, 2019 |
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Product Name | : The IUP Journal of Structural Engineering |
Product Type | : Article |
Product Code | : IJSE41904 |
Author Name | : Vijay Vardai, Tejas Doshi and M B Patil |
Availability | : YES |
Subject/Domain | : Science and Technology |
Download Format | : PDF Format |
No. of Pages | : 10 |
The paper investigates the influence of bacteria on the strength and durability properties of normal and Ground Granulated Blast Furnace Slag (GGBS) concrete. Cement was replaced with 40% of GGBS by weight. Different cell concentrations of bacteria were used in making the concrete mixes. Tests were performed for compressive, split tensile, Rapid Chloride Penetration Test (RCPT) and sulphate attack (Suthar and Parikh, 2016). Compressive strength and split tensile strength of GGBS bacterial concrete were higher with reduction in chloride penetration and increase in strength after sulphate attack was observed with a concentration 105 cells/mL of bacteria (Sudarshan and Tejas, 2016). Pseudomonas putida improves the strength and durability of concrete through self-healing effect.
Concrete is the most important material used widely in construction all around the
world. It is very weak in tension and very strong in compression. Since, concrete is
weak in tension, steel bars are embedded into the concrete to contour the tensile
forces. The steel reinforcement bars are provided with suitable cover to avoid
corrosion of the bars (Pappupreethi et al., 2017).
A novel technique is used to repair or make concrete cracks-free by
microbiologically induced calcium carbonate (CaCO3) precipitation. Calcite
precipitation will occur as a result of microbial activities. This technique improves
the compressive strength and stiffness of concrete and leads to crack-free structures
(Abhishek et al., 2016).
Pseudomonas putida, Ground Granulated Blast Furnace Slag (GGBS), Self healing, Rapid Chloride Penetration Test (RCPT), Regression analysis