Effects of curing regime, cement type, and water-to-cement ratio on the physicochemical, mechanical, and hydraulic properties of pervious mortar

Abstract

This study investigated the influence of curing regime, type of cement, and water-to-cement ratio (W/C) on the physicochemical, mechanical, and hydraulic properties of pervious mortar. The carbonation degree of mortar produced using ordinary Portland cement (OPC) and belite-rich cement (BRC) increases with an increase in the W/C ratio. Mortar produced using calcium sulfoaluminate (CSA) cement was completely carbonated within the first three days. A greater degree of carbonation was observed for BRC mortar compared to that of OPC mortar at 28 days. The hydraulic properties of pervious mortar were dominated by the curing regime. Specimens subjected to carbonation curing displayed more open voids and higher permeability. Further, both OPC and BRC mortars displayed higher compressive and flexural strength levels when subjected to carbonation curing. However, mortar produced using CSA displayed significantly lower compressive strength than those of OPC and BRC.