High-Performance Concrete With Fly Ash

Abstract

Generally, high-performance concretes can be defined as types of concretes that meet one or more performance requirements in a specific way. Usual concretes are concretes with a compressive strength up to 55 MPa and fly ash contents of around 20 mass percentage relative to the total binding components (c + f). In the production of high-strength concretes (compressive strength > 65 MPa), silica fume has been used usually in order to achieve the expected strengths at low w/c. In the production of mass concretes blast-furnace slag cements with a high percentage of slag are preferred in order to reduce the heat of hydration released by the cement reaction. The objective of the investigations presented in this paper was to produce high-strength and mass concretes with fly ash and to characterize the performance of these concretes. For this purpose, concretes with fly ash contents of 10, 20 and 30 mass percentage relative to (c + f) at w/c between 0.33 and 0.43 are investigated. The properties and the performance of these concretes are presented using the parameters compressive strength and their stress-strain behavior.