Abstract
Chloride ion has the highest proportion of chemical compounds present in seawater. This research utilized the chloride curing conditions in order to study the effect of chloride ion on properties of concrete containing zeolite as a mineral admixture and micro-nano-bubble water. The objective was to improve the durability and the mechanical properties of concrete. It was observed that the addition of zeolite-pozzolan and micro-nano-bubble water to the concrete under chloride curing conditions improved the mechanical properties and durability of concrete of 28 days old by forming Friedel’s salt. With increasing age of concrete and decomposition of Friedel’s salt in concrete samples, the process of improvement was reduced. The greatest effect on improving the mechanical properties and durability of 28 days old concrete was related to the mixture containing 15% zeolite and 100% micro-nano-bubble water under chloride curing conditions. Results also showed that in the mixture containing 15% zeolite and 100% micro-nano-bubble water, under chloride treatment condition, there was 45% increase in the compressive strength. Also, tensile strength and electrical resistance were improved 78 and 254%, respectively, and the chloride penetration and water absorption were reduced by 83 and 49%, respectively, compared to the control mixture.
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