Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 26, Issue 1, Pages 497-504Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2011.06.050
Keywords
Sand crushed limestone; Mineral admixtures; Quaternary binder; Sulfuric acid; Weight changes; Compressive strength; pH
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The synergistic action of three mineral admixtures simultaneously incorporated in cement has a positive effect concerning the durability of limestone mortars. Tests were carried out on limestone mortars made from five quaternary binders (ordinary Portland cement and OPC blended simultaneously with limestone filler, blast furnaces slag and natural pozzolana). The purpose of this investigation was to identify the resistance of five different mortar mixtures to sulfuric acid solutions. The changes in weight loss and compressive strength values measured at 30, 60, 90, 120 and 180 days for each acid solution were studied. The pH variation of the sulfuric acid solution has been monitored during the tests and several phases are determined by XRD. (C) 2011 Elsevier Ltd. All rights reserved.
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