STRENGTH DEVELOPMENT AND DURABILITY OF MORTARS WITH CALCINED MARL AS SUPPELEMENTARY CEMENTING MATERIAL
Abstract eng: Standard mortars (sand:cement = 3:1 and w/c = 0.50) were made where Portland cement was replaced with 0, 20, 35, 50 and 65 vol% calcined marl. The compressive and flexural strength were determined and the strength at 28 days age was higher or equal to the reference for up to 50 vol% marl replacement of cement. The microstructure of the mortars was characterized by SEM after 90 days curing, as well as their capillary suction rate and saturation. Mortars of all compositions were tested for durability starting after 90 days curing with respect to chloride diffusion, expansion caused by sulphate attack (5% Na2SO4) at both +5 C and +20 C, as well as carbonation.
Contributors:
Publisher:
Japan Concrete Institute, Tokyo
Conference Title:
Conference Title:
First International Conference on Concrete Sustainability
Conference Venue:
Tokyo (JP)
Conference Dates:
2013-05-27 / 2013-05-29
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-10-29, last modified 2014-11-18
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