Fresh and Hardened Behaviour of Self-Compacted Concrete with Different Mineral Additives

Abstract

Self-compacting concrete (SCC) is developed with the idea of improved flowability of the fresh concretemixture. The new technology in plasticizing agents and special mix design of concrete has given thisopportunity without any segregation and bleeding. In addition to ease of placement, reduction in theconstruction time, labor costs and construction noise are the other benefits of SCC. The aim of thisstudy is to investigate the fine mineral additive effect on the fresh and hardened properties of the SCC.For this reason, ground granulated blast furnace slag, fly ash, Bilecik marble powder and calcareousaggregate crushing powder is used as fine powder source in SCC mix designs. Fresh properties of theSCC mixtures are evaluated by performing fresh unit weight, slump flow, V-funnel, and L-box tests. Thehardened properties of the prepared SCC are evaluated with the unit weight, ultrasound pulse velocityand compressive strength tests on the 150x150x150 mm cubic specimens at the end of the 3, 7 and 28days of curing periods. The experimental work showed that ground granulated blast furnace slag andfly ash are more effective on the consistency of the fresh SCC properties. Especially the passing abilityof the SCC is improved by using fly ash as a powder in the mix design. The compressive strength of theSCC is developed by using ground granulated blast furnace slag in the mixture. The marble dust is alsoeffective and beneficial for the cohesion and cost of the SCC.