Assist Prof. Dr. Mukhallad M. M. AL-MASHHADANI
Istanbul Gelisim University, Turkey
Rice husk ash-GGBS based geopolymer composites reinforced with various steel fibers: strength properties and thermal behavior. Due to the increasing environmental impacts, the construction industry is witnessing a rising trend towards using green and waste materials. In the light of such event, the researchers recently tended to conduct their studies depending on the fact that cementitious materials are more hazardous to the environment. Geopolymers, as one of the most successive potential alternatives, possess comparable performance regarding strength properties, durability, long term behavior and other aspects. In this paper, an experimental investigation is performed to inspect the performance of two widely used materials in the geopolymeric matrix, namely Ground Granulated Blast Furnace Slag (GGBS) and Rice Husk Ash (RHA). The effects of partial replacement of the aforementioned materials and incorporating various steel fibers within the matrix were studied. Tests of strength properties and behavior under the effect of elevated temperature. In general, using the designated materials were found to be beneficial in producing a matrix with better performance with respect to the ordinary cementitious composites in terms of the investigated properties. Also, the results revealed the fact that using rice husk ash was responsible for increasing the compressive strength of the fabricated samples while the embedded fibers improved the flexural behavior of the resulted matrix.