Concrete is one of the most important materials in construction. Concrete is weak in tension, so it affects ductility and also cracking. Based on the continuous research work is carried out around the world, various changes have been made from day to day time to overcome the deficiencies of cement concrete structures. The current research is going on the field of concrete technology; the lead to overcome the development of special concrete structures, while considering the faster construction, good strength, durability and the environmental friendliness of concrete with industrial waste material such as fly ash, GGBS, silica fume, metakaolin etc. Use of these Bio mineralization concepts involves in concrete leads to modern invention of new developed material called as Bacterial Concrete. In this present work studies were made by using the bacteria is Bacillus Cereus. Bacillus cereus is cultured in a model laboratory, the microorganisms are used to obtain the calcium carbonate precipitation in concrete, it will induced as a result of biological activities is free from pollution and natural. In this study, Cement is partially replaced with fly ash by 35% and for these replacements; specimens are casted with bacteria and without bacteria separately. The Compressive strength of the specimens with and without bacteria is compared. Results shows that the addition of bacteria improves the compressive strength of the concrete. In addition, this bacterial concrete concept of calcite formation is not only environment safe but also cost effective.
Prof. Dr. Bilal BİLGİN