Experimental Analyzation of Fibre Reinforced Self Compacting Concrete under Elevated Temperature

Abstract

The strength of concrete varies depending on the grade of concrete and environmental circumstances, making it one of the most crucial materials to consider while building a structure. Concrete manufacturing involves multi-aggregate, cement, water and granule aggregates. The quality of the materials employed is identified by conducting preliminary tests like fineness, initial setting schedule, particular gravity, plasticity, etc. Usually, as the grade surpasses, Super Plasticizers (SP) is generally mixed with the concrete for higher strength. An appropriate compaction process is necessary to improve conventional concrete’s stability. Moreover, in some instances, there are difficulties in the compaction process, leading to the impossibility of attaining full strength. Hence, a novel category of concrete called Self Compacting Concrete (SCC) prevents the abovementioned issue and does not require compaction. The SCC provides better compression and flowability, mainly when compactness is difficult. Besides, the addition of fibre-reinforced concrete improves the integrity of concrete. Similarly, the addition of rubber along with the SCC forms the Self Compacted Rubberized Concrete (SCRC), and the mixing of steel fibres or Polypropylene (PP) forms the Fibre Reinforced SCRC (FRSCRC). However, when subjected to elevated temperature, the concrete structures’ durability, elastic modulus, volume deformation and strength considerably decrease. Therefore, various materials are combined with the FRSCC to increase the concrete’s strength. In this paper, an analogization is carried out amid the different types of FRSCCs concerning elevated temperature to identify the optimal one.