Epoxy resin without any hardeners can harden in the presence of alkalis or hydroxide ions in cement mortar. The present paper discusses the potentiality of the self-repair of microcracks in the epoxy-modified mortars. The epoxy-modified mortars without any hardeners are prepared with polymer-cement ratios of 0/100, 20/100, 40/100 and 60/100, and subjected to a combined wet/dry cure for 208 days.
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