Abstract
The construction industry plays a vital role in India’s development and it contributes about 8-10 per cent to GDP on an average. Developing nations like India need to have faster construction with high quality, durability and a pollution-free environment, which can be achieved only with Ready mix concrete (RMC). The usage of GGBS is very high in RMC industry. Compressive strength and workability are the most important and basic properties of concrete for any applications. An experimental investigation is carried out on optimum usage of GGBS in Ready Mix concrete industry. This paper presents the experimental test results of 27 types of concrete mixes made with 10% to 80% replacement of ordinary Portland cement. Slump retention for 180 minute which is a basic requirement for an RMC industry is carried out. Compressive strength testing of all the specimens was carried out at 7, 28, 56, 90 and 180 days. The test results proved that the compressive strength of concrete mix containing GGBS increases but after 50% of the total binder content, the addition of GGBS does not improve the strength of concrete. The reason could be GGBS may act as fine aggregate.
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