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Keywords

Compressive strength, regression analysis, tensile strength, UPV, workability

Document Type

Research Article

Abstract

This paper presents the results of an investigation into the influence of aggregate and binding material type on the mechanical properties of hardened concrete. Four different types of coarse aggregate (Brick Aggregate, Recycled Brick Aggregate, Black Stone and Shingles) and eight types of binding material have been used to perform this investigation. Aggregates were collected and prepared according to the grading requirements of ASTM C33-03. Several tests were performed for coarse aggregate, such as specific gravity, absorption capacity, unit weight, and abrasion resistance. Cylindrical concrete specimens were made with different W/C ratios and cement contents. A total of 42 other cases were considered for testing. The specimens were tested for UPV, compressive strength, stress-strain curve and Young’s modulus at 28 days. The major objective of this study was to investigate the mechanical characteristics of concrete for different types of aggregate and binding materials. The study found that the UPV of concrete specimens made with brick aggregate and recycled brick aggregate was lower than that made with shingles and black stone. Black stone gave the best combination of high Young’s modulus and high compressive strength to the concrete compared to others. Shingles gave the concrete the best combination of high UPV and high compressive strength compared to others. Young’s modulus and compressive strength of concrete increased with a decrease in the w/c ratio for any type of aggregate and increased with an increase in cement content.

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Publication Date

30-9-2024

First Page

35

Last Page

51

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