Shubham Rajput
Harsh Rathore
- Student Department of Civil Engineering, Sanjeev Agarwal Global Educational University, Bhopal, Madhya Pradesh, India
- Assistant Professor 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: Concrete, aggregates, compressive strength, workability, durability, permeability, recycled aggregates, sustainable construction.
[This article belongs to Journal of Structural Engineering and Management(josem)]
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Journal of Structural Engineering and Management
| Volume | 11 |
| Issue | 01 |
| Received | February 26, 2024 |
| Accepted | April 11, 2024 |
| Published | April 18, 2024 |