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ISSN 2063-5346
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AN EXPERIMENTAL STUDY ON COMPRESSIVE STRENGTH OF FIBER REINFORCED HIGH STRENGTH CONCRETE USING RECYCLED COARSE AGGREGATE

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YADDLA JOGESHWARAO, ALAMANDA SAI KUMAR,Dr.D.VENKATESWARLU
» doi: 10.48047/ecb/2023.12.si4.477

Abstract

The increasing demand for natural aggregate has led to a scarcity of natural resources, making the recycling of destroyed concrete a viable solution for sustainable development. Recycled concrete aggregate (RCA) has been produced by crushing demolished concrete, and it is an eco-friendly alternative that reduces the burden on landfills and consumes less energy. However, the usage of RCA in structural concrete requires careful consideration of its strength characteristics. Coarse aggregate plays a crucial role in the compressive strength of concrete, and natural coarse aggregate is often used to replace crumbling concrete. Concrete is the most widely used building material in civil engineering, but the current disposal of concrete waste in landfills poses a threat to the environment. The use of RCA in new concrete production is considered an efficient solution to address this problem, but more detailed information on its characteristics is needed. This study aims to develop high-strength grade concrete using RCA and silica fume as a mineral admixture material. The experiment involved creating 18 sets of concrete, each with five cubes. A control mix was also included in the study. In the fresh state, the mixes were subjected to a slump test, and in the hardened state, a 28-day compression test was performed. The results showed that using RCA and silica fume as a mineral admixture material resulted in high-strength grade concrete with improved mechanical properties. In conclusion, the use of RCA in new concrete production is an efficient way to utilize concrete waste while preserving natural resources and reducing environmental pollution. The results of this study provide important information on the strength characteristics of concrete using RCA and silica fume as a mineral admixture material. Further research is needed to fully explore the potential of using RCA in structural concrete and to optimize its performance.

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