Study on the Effectiveness of Incorporation of Bacteria and Nanomaterials for Durability in Concrete
Author(s):
Vineeth Viswam , MAR ATHANASIUS COLLEGE OF ENGINEERING, KOTHAMANGALAM, KERALA
Keywords:
Durability, Bacteria, Nanosilica, Strength, Chemical Attack
Abstract:
The durability of cement based materials such as mortar and concrete typically suffers from water and chloride ingression, which corrodes the loadbearing steel reinforcement. Most existing strategies to increase the water resistance of cementitious materials are based on additional surface treatments of the material after the casting process. A complementary strategy could be a bulk modification of cementitious materials by altering their mineralized nanostructures, such as ettringites. Controlling mineralization processes through bioinspired approaches or integrating nanomaterials as hydrophobic components into the bulk volume of the material improves the durability. In this paper, the bacterial content in concrete is varied for concentrations of 105, 106, 107 cells/ml of water added to the concrete mix and strength and durability tests were performed. Highest strength and durability performance was obtained for bacterial concentration of 107 cells/ml. Also, cement was partially replaced with nanosilica of percentage varying as 1%, 2% & 3% of cement by weight. Strength and durability performance has improved for nanosilica incorporated concrete when compared to normal concrete. The various durability tests performed were water absorption test, chloride attack, sulphate attack, and sorptivity test.
Other Details:
| Manuscript Id | : | IJSTEV3I11053
|
| Published in | : | Volume : 3, Issue : 11
|
| Publication Date | : | 01/06/2017
|
| Page(s) | : | 71-76
|
Download Article
