The Effect Of Ternary Blend And Temperature On Self Compacting Concrete Mixes

Abstract

In this study, aimed to investigate performance of self- compacting concrete using supplementary cementitious materials as partial replacement of cement on the fresh and strength characteristics, the effect of high temperatures exposed on the concrete structural members is an important parameter to be considered in the study. For this purpose, different self- compacting concrete mixes were designed at water to binder ratio 0.45 and M₂₅ and  M₄₀    grade concrete was used in this study.  The different supplementary cementitious materials such as fly ash, metakaolin and ground granulated blast furnace slag (GGBS) as partial replacement of cement. The replacement levels 15% fly ash, 5% metakaolin constant and GGBS 20%,30%, 40%, 50%,60% was used in concrete mixes. After that experimental concrete mortar cube test specimens were made and will be subjected to varying high temperature 250^oC to 650^oC for a period of 30minutes and the effect of sudden cooling will be compared with that for specimens that were subjected to high temperature and cooled normally this test only for concrete mixes. Flow properties of self- compacting concrete mix were performed regarding to slump flow diameter, T₅₀ slump flow time, V-funnel flow time, L-box flow time, J-ring. The compressive strength, split tensile and flexural strength at the age of 7,14,28 days for all concrete mixes tested. M40(SCC1) concretes were observed to exhibit better performance than the M25(SC1)concrete when exposed to flow properties of SCC and high temperatures effects condition.