Investigation on Pulse Velocity Changes in RCC with Different Cement Content and Different Types of Admixtures

摘要

RCC dams are going to be extended in water resource projects,so the new methodologies are also needed to evaluate this type of concrete.One of these methods is pulse velocity measurement for assessment of the quality and evaluation of uniformity of RCC.In this research,pulse velocity through the RCC (as a non-destructive test has been measured and also its changes have been detected.For this purpose 20 types of Mix designs with the same aggregates but different cementitous contents(100,125,150,175 & 200 kg) and three types of chemical admixtures (retarder,plasticizer and super plasticizers) have been made in the laboratory and water cured up to 90 days.After measurement of pulse velocity in cylindrical 15 × 30 samples,other mechanical tests such as the compressive strength,Indirect tensile strength,Static & dynamic elasticity modulus and permeability of the samples have been tested and the results were evaluated.