An overview on mixture design of self‐compacting concrete

Abstract

Self-compacting concrete (SCC) was developed in 1988 and introduced by Professor H. Okamura to achieve durability of structures with low skilled laborers. The three properties of SCC that differentiates it from traditional concrete are passing ability, filling ability and segregation resistance. The present study highlights the developments concerning SCC in the period from 1995 to 2017. This information is important for researchers and professionals working in this area. SCC can be optimized to a larger extent to find the best alternative either by use of additives or tailor-made mix design. Based on different principles and parameters, design methods can be categorized into six classes namely empirical design method, statistical factorial design method, strength-based design method, rheology of paste method, particle packing method and Eco-SCC mixture design method. To develop SCC with high quality a suitable method can be chosen depending upon the situation and application.compressive strength, design mixture method, empirical, particle packing method, rheology of paste method, self-compacting concrete 1 | INTRODUCTION SCC flows into every corner of a mold, passes reinforcement and fill gaps without any need of internal or external vibration and compaction simultaneously maintaining stability without segregation and bleeding of concrete. It has the ability to compact itself only by means of its own weight. [1][2][3][4] In the early 1990s, SCC was introduced in concrete technology. 5 The properties of SCC depend on the source and the type of constituent materials and their properties. 6 The use of SCC eliminates the compacting effort and this results in reduced costs of placement, moreover, a decrease in the duration of construction improves productivity. 7 SCC is a concrete type with high workability, a high flowability and superior resistance to segregation. 8 The property of SCC to completely fill a formwork by filling gaps and to flow around reinforcement without the need of vibration or bleeding makes it significant to use. 9 A good balance between deformability and stability resulted in the successful development of SCC. Different mix design procedures were proposed for SCC that include (a) combinations of a higher volume of mineral additives and water-reducing admixture, (b) combination of water-reducing admixture and viscosity modifying agent. 10 The use of SCC reduces the noise during casting and provides better working conditions. 7,11 The applications of SCC in densely reinforced sections, that is, columns and beams in moment-resisting frames in seismic areas is necessary to ensure that all gaps in a formwork are filled. 7 The use of limestone powder as a fine additive can improve the rheological behavior of cement pastes and the combination of both limestone powder and fly ash can result in a higher packing density. 12 Eco-SCC is a SCC with a maximum total binder content of 315 kg/m 3 which can include cement, silica fume, fly ash and/or limestone filler. 13 Air-entrained SCC was designed with the u...

Effect of self‐compacting concrete infill on the flexural behavior of hollow channel sections: Experimental and numerical studies

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Determination of the Optimum Amount of Superplasticizer Additive for Self-Compacting Concrete

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Effect of marble slurry as a partial substitution of ordinary Portland cement in lean concrete mixes

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