Physico-Mechanical Characterization of Cement Concrete using Quarry Waste as Fine Aggregate Replacement of Natural Sand.
- Resource Type
- Article
- Authors
- Shaheen, Anwar ul Haq; Ahmed, Khawaja Shoaib; Sarfraz, Yasir; Riaz, Muhammad Tayyib; Shahzad, Amir
- Source
- Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ). Oct2023, Vol. 48 Issue 10, p13807-13821. 15p.
- Subject
- *MATERIALS testing
*CONCRETE
*NATURAL resources
*STONE
*SAND
*SELF-consolidating concrete
*CONCRETE mixing
- Language
- ISSN
- 2193-567X
The rapid depletion of natural sand resources due to extensive usage in construction demands the need for an alternative and economical fine aggregate. The present study evaluates the physico-mechanical and petrographic properties of stone dust and concrete using stone dust as a fine aggregate replacement for natural sand. A comparative analysis of sand (conventional) and stone dust (alternative) as a fine aggregate was carried out through several tests for physical characteristics, petrographic and geochemical analysis (X-ray fluorescence) along with physico-mechanical tests on the concrete. Different trial mixes of M25 grade concrete were prepared as per American Concrete Institute (ACI) standards with various replacement percentages of stone dust with natural sand. These trail mixes were then subjected to the slump test of fresh concrete and other physico-mechanical tests were performed as per American Society for Testing and Materials (ASTM) standards on 7 and 28 days hardened concrete cylinders and slabs. The physical and chemical properties of stone dust are within the ASTM standard limits for fine aggregate used in cement concrete. The slump values of fresh concrete range between 27 and 74 mm for all mix designs. The replacement of sand with stone dust at various ratios in medium-grade concrete showed an increase of up to 40 and 29% in compressive and up to 53 and 32% in flexural strengths for 7- and 28-day curing periods, respectively, in comparison to concrete mix using 100% natural sand. The strength values of all concrete samples using stone dust surpass the minimum strength requirements of the M25 concrete mix design. The most favourable replacement combination of natural sand with stone dust is 40–60% depending upon the type and application of the mix design. The present study suggests the reuse of quarry waste as an economical replacement for depleting resources of natural sand. [ABSTRACT FROM AUTHOR]