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Abstract
Influence of Natural Zeolite on Drying Shrinkage and Compressive Strength of Crushed Sandstone Aggregate Mortar
Chainarong Chanmanee 1 and Danupon Tonnayopas2*
The physical and mechanical property of mortar containing crushed sandstone aggregate mortar (SAM) blended natural zeolite (NZ) was investigated. Portland cement, Type I was replaced in the proportion of 0%, 10%, 20% and 30 wt.% NZ and uncured and cured with moisture for 7, 28, 56 and 90 days. Aggregate characterizations of sandstone and NZ have been examined in grain size distribution, fineness modulus, specific surface area and specific gravity. Moreover, water absorption, bulk density, volumetric drying shrinkage and after curing, electrical resistance, Shore hardness and compressive strength of SAM blended NZ was determined. Experimental results revealed SAM blended NZ having non-drying shrinkage and containg 10%NZ at 90-day given highest compressive strength of 56.54 MPa or relative strength of 129.