Elastic properties of a calcium aluminate-cement-based concrete

Calcium aluminate-cement concrete is the standard in many high-temperature applications and is widely considered for a variety of other applications. However, little research has been conducted on its elastic properties at elevated temperatures. Information on this subject is of great interest to engineers, especially those involved in designing structural concrete applications that are exposed to high temperatures. This paper is intended to provide some insight on the changes in the elastic modulus, shear modulus and Poisson`s ratio at elevated temperatures. The high-temperature properties of calcium aluminate-cement-based concrete are greatly affected by the purity of the cement and the choice of the aggregate. The purity of the cement is determined by the purity of the alumina source. Impurities lower the melting point of the cement, thus lowering its service temperature. Aggregates are generally prefired to a temperature above the anticipated service temperature of the concrete.