Experimental Investigation Of The Effect Of High Temperature On Concrete Property As Partially Replacement Of Coarse Aggregate By Waste Brick

Abstract

Concrete is the most widely used man-made construction material. It is obtained by mixing cement, water and aggregates (and sometimes admixture) in required proportions. Aggregates contain approximately 75% of the concrete's body and give greater volume stability and durability than hydrated cement paste. Despite being a relatively simple idea, concreting can be difficult to understand at times, and even seemingly insignificant variables like temperature can have a significant impact on how well concrete performs. A comprehensive investigation of the compressive and split tensile strengths by percentage of waste brick aggregate used in concrete that was mixed, poured, and allowed to cure at varied temperatures was conducted. The effect on workability using slump test and water absorption test were investigated. The waste brick used as replacements was collected from brick production area that is found in a Jimma. This objective provides an overview of the effects of high temperature on the property of concrete materials and structure temperature on waste brick aggregate as partial replacement for natural coarse aggregate by 10%, 20%, 30%, and 40% by volume in C-25 concrete production with investigation of optimum ratio of replacement and engineering properties of C-25 concrete. A total of ninety three concrete mixes were made that include the control and the replacement mixes. A water/cement ratio of 0.5 was used for all the mixes. From the research, it was observed that the addition waste brick aggregate reduces workability of wet concrete. The results harden concrete work have shown that, up to 30% replacement of the waste brick aggregate with temperature effect achieved a higher compressive strength, split tensile strength and water absorption at all test ages i.e. 7and 28 days of curing test. It can therefore, be concluded that 30% replacement of natural coarse aggregate by waste brick aggregate with temperature effect results in a similar concrete properties with control test and it is the optimum replacement. This paper also deals with the procedure and precautions to be observed while concreting in high temperature conditions so as to minimize the detrimental effects of temperature on concreting in general types of construction, such as buildings, and other similar structures