Mechanical Properties of Concrete by Partial Replacement of Bentonite Under Elevated Temperature

Abstract

In large-scale constructions, the strength and durability of the materials used are highly considered features. It has been noticed that the strength and thermal resistance of construction mixtures can be improved by replacing some percentage of any of the construction material in a mix like sand. One such replacement is Bentonite whose usage as a partial replacement of sand is under study. Although concrete plays a significant role in degrading the impact caused by fire, the tensile module and compression strength of concrete degrade when it is exposed to high temperatures. So, a noticeable impact is produced on the concrete along with affecting the bearing capacity of concrete. Bentonite will be used as a filler material (replacement of sand) in concrete mix and its behavior will be observed for strength and fire resistivity at different temperatures. Analysis of the optimum value of bentonite which can replace sand in the context of strength and thermal resistance of concrete is made with the optimum value of bentonite in mortar plaster by replacing sand. This study will also reveal the effect of fire on concrete specimens coated with mortar plaster in which bentonite is replacing sand in three different ratios. The anticipated results will define the comparison with the control samples that are tested at room temperature along with the empirical associations used as the input to evaluate and design the concrete structures.