Evaluation of modulus of elasticity for normal and high strength concrete with granite and calc‐granulite aggregate

High strength concrete is being widely used in construction nowadays and therefore, it is important to develop the design parameters for effective use and considerations. The Indian Standard has the equation for prediction of modulus of elasticity (MOE) but it is valid for normal strength concrete only. The modulus of elasticity is considered as a function of compressive strength of concrete and therefore, all the parameters that have influence on the properties of concrete should necessarily have its effects on the value of the modulus of elasticity. MOE depends on the properties of the aggregates, cement paste and their interactions at the interfacial transition zone. There are numbers of equations to evaluate the modulus of elasticity by various International codes and literatures. This paper aims in developing an empirical equation to evaluate the modulus of elasticity for both normal and high strength concrete considering the indigenous aggregates and materials. The analysis considers test results of modulus of elasticity with a wide range of compressive strength of concrete with a total of about 100 test results. Based on the experimental results for granite and calc‐granulite aggregate an empirical equation is proposed for the prediction of MOE and is compared with the empirical equations available in the different International standards. Also the effect of basalt aggregate on modulus of elasticity as compared to granite aggregate is studied.