Improvement of the Mechanical Properties for CO2 Reducing Mortar Using Porous Feldspar and Hydrogen Nano-Bubble Water

Abstract

The modern society is a world made of concrete. Many buildings, ports, dams, and other infrastructure are made of concrete. Concrete is mainly composed of aggregate and cement. It is mixed with blended water and used after curing. This study used porous feldspar known to react well with cement to replace fine aggregate and reduce cement content. Although feldspar mortar reduced cement content by 5% (25%->20%), the compressive strength increased 1.4 to 2.9 times compared to its counterpart, Ready-Mixed Mortar (RMM). Using Hydrogen Nano-Bubble Water (HNBW) as blended water, compressive strength was increased from 7% to a maximum of 23%. This proved that hydrogen nano-bubble water could promote cement hydrate creation and reaction. When hydrogen nano-bubble water was used as blended water, thermal conductivity decreased by a maximum of 30% compared to the use of plain water as blended water. Results of this study indicate that construction materials with improved thermal efficiency could be developed.