Self Compacting High Performance Concrete with Steel FibresJournal: International Journal of Scientific Engineering and Research (IJSER) (Vol.4, No. 6)
Publication Date: 2016-06-05
Authors : Athulya Sugathan;
Page : 35-40
Keywords : self compacting high performance concrete; EFNARC; Super-plasticizer ( SP); Viscosity Modifying Agent (VMA);
This paper presents the experimental procedure for the design of self-compacting concrete, in which we proposed the mix design with the globally acceptance result of all tests and the carried out test are slump flow test, V-funnel test, L-box test. The mix design consist of 25% fly ash (as a cement replacement material), 1.2% superplastizer and steel fibres. The compressive strength, split tensile strength and flexural strength was checked on the 7-day, 14-day, 28-day and results are indicating that the proposed design mix can produce self-compacting concrete with higher quality. High-performance concretes are made with carefully selected high-quality ingredients and optimized mixture designs; these are batched, mixed, placed, compacted and cured to the highest industry standards. Typically, such concretes will have a low water-cementing materials ratio of 0.20 to 0.45. Plasticizers are usually used to make these concretes fluid and workable. High-performance concrete almost always has a higher strength than normal concrete. However, strength is not always the primary required property. This paper also describes the test performed for the globally acceptance for the characteristics for self-compacting concrete such as slump flow, V-funnel, L-box test. Strength of concrete is determined for the 7-day, 14-day, 28-day are also mentioned. To establish an appropriate mixture proportion for a self-compacting concrete the performance requirements must be defined taking into account the structural conditions such as shape, dimensions, reinforcement density and construction conditions. The construction conditions include methods of transporting, placing, finishing and curing. The specific requirement of self-compacting concrete is its capacity for self-compaction, without Conventional concrete tends to present a problem with regard to adequate consolidation in thin sections or areas of congested reinforcement, which leads to a large volume of entrapped air voids and compromises the strength and durability of the concrete. Self-compacting concrete (SCC) can eliminate the problem, since it was designed to consolidate under its own mass.
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