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Journal of Structural Engineering and Management Original Research

Determining the Characteristics of Concrete Composed of Different types of Aggregates

  1. Shubham Rajput Department of Civil Engineering, Sanjeev Agarwal Global Educational University, Bhopal, Madhya Pradesh, India
  2. Harsh Rathore Department of Civil Engineering, Sanjeev Agarwal Global Educational University, Bhopal, Madhya Pradesh, India

Abstract

This study investigates the influence of recycled aggregates on the compressive strength of concrete designed for medium workability. Various replacement proportions of recycled aggregates (0%, 50%, 60%, and 100%) were examined using conventional mix design methods, specifically focusing on 10 mm recycled aggregates' impact. The specimens comprised 100% recycled aggregate, with a combination of 60% 20 mm and 40% 10 mm sizes. Compressive strength analyses were conducted at 7 and 28 days using different mix design methods (IS, ACI, and DOE). Results indicate that the 7-day compressive strength is similar for IS and ACI methods but lower for DOE. However, at 28 days, IS method outperforms ACI and DOE methods. Despite lower strength values, the DOE method required the least cement content. Visual representation and comparison with controlled concrete reveal a strength reduction in recycled aggregate concrete (RAC), attributed to 100% recycled aggregates, impacting hydration and strength development.

Keywords

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