Effect of Ordinary Portland Cement in Geopolymer system

The construction industry in developing countries is growing very fast. And Ordinary Portland cement concrete is one of the most popular materials in demand in this construction industry. Ordinary Portland cement is commonly used as a binding material for the concrete production but the use of this material has brought up some concerning issues of various types. Therefore, scientists in recent years have come up with fly ash based Geopolymer concrete as alternative to replace the Ordinary Portland cement concrete. The fly ash based geopolymer comes up with some problems of its own. It has a very fast setting time and also it needs considerable amount of energy or heat to attain the desirable strength. These properties of geopolymer concrete are not desirable on the real time construction process. These undesirable properties could be minimized by mixing the fly ash to the Ordinary Portland cement; since the fly ash and the Ordinary Portland cement will complement each other. Therefore, this project aims to identify the optimum fly ash to Ordinary Portland cement ratio for good engineering properties of a concrete and also the specific curing time for each property.