Properties of concrete with binary binder system of calcined dolomite powder and rice husk ash

Mostafa Shaaban

doi:10.1016/j.heliyon.2021.e06311

Properties of concrete with binary binder system of calcined dolomite powder and rice husk ash

Heliyon. 2021 Feb 20;7(2):e06311. doi: 10.1016/j.heliyon.2021.e06311. eCollection 2021 Feb.

Author

Mostafa Shaaban¹

Affiliation

¹ Giza Higher Institute for Engineering and Technology ,Egypt.

Abstract

This study investigates the properties of a binary binder system consisting of calcined dolomite powder (CDP) and rice husk ash (RHA). To conduct the study, a reference mixture containing 100% ordinary Portland cement (OPC) and six other concrete mixtures containing a binary binder system with different proportions of CDP and RHA were prepared and tested. Testing was conducted for workability, setting time, dry shrinkage, and mechanical strength at different curing times. The results indicate that the binary system CDP-RHA have mechanical properties better than that of OPC. In addition, the results indicate that the mixture containing 50% CDP and 50% RHA is optimal in terms of mechanical strength.

Keywords: Binary binder system; Calcined dolomite powder; Mechanical properties; Ordinary Portland cement; Rice husk ash.