PROPOSING A METHOD TO DETERMINE THE INTENSITY OF CEMENTITIOUS MATERIALS APPLIED IN DESIGNING CONCRETE COMPOSITION

Abstract

The method to determine the intensity of cementitious materials applied in designing concrete composition has not clearly identified in any standard. In most cases, this value is understood to be determined by standard TCVN6016 – Cements - Test methods - Determination of strength. In reality, the determination of the intensity of cementitious materials (amixture of cement and other mineral admixtures) by the standard for cement ends up with inaccurate value (lower strength). As a result, the proportion of concrete aggregate is incorrect, normally the amount of cementitious materials increases, leading to diseconomy. This paper proposes the method to determine the intensity of cementitious material with more accuracy, thus decrease the number of test to be carried out to achieve the final result satisfying both technical and economical aspects.