Properties of sustainable concrete containing recycled fine aggregate as partial sand replacement

Hanis Nadiah, Ruslan and Tanash, Alaa Omar and Khairunisa, Muthusamy and Low, Wee Yang and Mohamed, A.Ismail (2023) Properties of sustainable concrete containing recycled fine aggregate as partial sand replacement. In: Advanced Materials, Technologies and Technological Processes. Key Engineering Materials, 942 . Trans Tech Publications Ltd, Switzerland, pp. 129-135. ISBN 978-3-0364-1270-2

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River sand, one of the ingredients for concrete when harvested uncontrollably from the river would cause destruction to the river environment. At the same time, the increasing concrete waste disposed at dumpsite after generated from construction and demolition activity causes environmental pollution. The approach of recycling concrete waste for use as a mixing component in concrete production would lessen the heavy reliance on natural sand supplies and lower the amount of concrete waste disposed. The current study investigates the effect of recycled fine aggregate obtained from concrete waste as sand replacement on concrete's workability, compressive strength, and water absorption. Five mixtures were made using varying amounts of recycled fine aggregate (0, 10, 20, 30 and 40% by weight of sand). All specimens were subjected to water curing. Three types test were conducted namely slump test, compressive strength test and water absorption test. Findings show that the integration of recycled fine aggregate up to 20% produces concrete with the targeted strength of 40MPa. Furthermore, the water absorption of the mixes is less than 3%, allowing it to be classified as good quality. Success in blending recycled fine aggregate in concrete production would contribute to saving river sand consumption and lesser concrete waste for a cleaner environment.

Item Type: Book Chapter
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Compressive strength; Concrete; Concrete waste; Partial sand replacement; Recycled aggregate
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Faculty/Division: Faculty of Civil Engineering Technology
Institute of Postgraduate Studies
Depositing User: Dr. Khairunisa Muthusamy
Date Deposited: 15 Sep 2023 02:39
Last Modified: 15 Sep 2023 02:39
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