1 - Wheat straw ash as hydraulic binder substitution in binder-based materials made of an admixture superplasticizer

Abstract

The objective of this chapter is to identify the difference between additive and substitution materials for cement and cement-based construction binders. As a consequence of importance of cementitious substitution materials, this chapter presents characteristic properties of wheat straw ash, differences among mortars made with and without wheat straw ash, and physical and mechanical properties of mortar including wheat straw ash. For that objective, this chapter consists of the introduction section, which explains why wheat straw ash has to be used as hydraulic binder substitution; the materials and method section, which examines constituent mixing materials of mortar; and the results and discussion section, which compares the properties of air pore, unit weight, water absorption, capillary water absorption, compressive strength, and flexural strength measured with each other. Additionally, it gives comprehensive relationship equations between the mixing materials ratio and the properties of mortar. As will be understood from arguing in the chapter, wheat straw ash is a favorable substitution material for hydraulic binder and hydraulic binder-based construction materials in terms of improving the durability feature for harmful climatic conditions and the physical and mechanical features for static and dynamic loads in construction.