Durabilite des mortiers à base de sable alluvionnaire siliceux substitué par du sable calcaire de concassage vis-a-vis des agressions chimiques

Bounoua Abdelkrim; Boukhelkhal Aboubakeur; Bederina Madani; Makhloufi Zoubir

doi:10.34118/rssi.v9i2.1687

Bounoua Abdelkrim Structures Rehabilitation and Materials Laboratory, University of Laghouat, PO Box 37G, Laghouat 03000, Algeria.
Boukhelkhal Aboubakeur Civil Engineering Laboratory, University of Laghouat, PO Box 37G, Laghouat 03000, Algeria
Bederina Madani Structures Rehabilitation and Materials Laboratory, University of Laghouat, PO Box 37G, Laghouat 03000, Algeria.
Makhloufi Zoubir Structures Rehabilitation and Materials Laboratory, University of Laghouat, PO Box 37G, Laghouat 03000, Algeria.

DOI: https://doi.org/10.34118/rssi.v9i2.1687

Keywords: mortar, siliceous river sand, crushed limestone sand, substitution, durability, immersion-drying accelerated cycles

Abstract

This experimental work aims to study the effect of partial replacement of siliceous river sand (SRS) by limestone crushed sand (LCS) on the durability of normal mortars exposed to chemical aggression(MgSO4) with high concentration (10%). The use of LCS which is available in large quantitiesinLaghouat region as a waste in stone carriers, as substitutes of SRS is a good solution to reduce theconsummation of this latter and therefore protect the environment. The selected percentages of substitution were 50 and 100%, and the samples wereexposed to MgSO4 with accelerated immersion-drying cycles. The performed testswere weight loss, compressive strength, mineralogical analysis by DRXand visual control. The results show that the incorporation of limestone crushed sand improves the durability of mixtures mortar by decreasing themass and mechanical strengths loss.

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