Thesis

High Strength Fiber Reinforced Concrete (HSFRC) is well known by its superior mechanical characteristics and advanced durability properties. Silica Fume (SF) is a key component in the production of HSFRC. However, the high price and limited availability of SF in developing nations restricts the use of HSFRC in the current building industry, particularly in Bangladesh. Rice Husk Ash (RHA) can be a viable alternative to replace SF due to the presence of high silica content. Therefore, the objective of the study is to evaluate the performance of HSFRC mixtures in terms of their fresh, mechanical, thermographic, durability, and Life-cycle assessment criteria, incorporating RHA and FA as partial replacements for SF and Ordinary Portland Cement (OPC). After replacing 10%, 20%, and 30% of the OPC with FA, the maximum mechanical strength gaining mix was chosen to add RHA as a replacement for SF. The outcomes of the tests demonstrated that HSFRC including FA and RHA has satisfactory fresh, mechanical and durability performance while lowering the carbon footprint of the concrete. Therefore, FA and RHA can be utilized to produce HSFRC without sacrificing the needed properties, while also providing a cleaner, more sustainable environmental solution by conserving energy and lowering CO2 emissions.