Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 147, Issue -, Pages 598-607Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2017.04.199
Keywords
Mortar; Marble powder; Water absorption; Drying shrinkage; Sulphate attack
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This study was carried out to test the suitability of marble waste as a fine aggregate in lean mortar mixes. Marble waste was crushed in the form of fine aggregate, then it was substituted in place of river sand from 0% to 100% by volume. It was found that by incorporation of marble waste from 25% to 50%, maximum benefits could be derived in terms of reduced water requirement, improved mechanical performance and enhanced durability. At 50% substitution the water requirement to attain the required workability fell by 6% and compressive strength increased from 2.84 MPa to 7.04 MPa. When exposed to 5% sodium sulphate and sulphuric acid solutions, the mortar mix with 25% marble waste and 75% of river sand performed at par with control mortar. In view of these results it was concluded that marble waste can be safely used in both aggressive and non-aggressive environments by replacing river sand by 25% and 50% respectively in lean mortar mixes. (C) 2017 Elsevier Ltd. All rights reserved.
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