Non-Destructive Testing for Concrete: Dynamic Modulus and Ultrasonic Velocity Measurements
Nondestructive testing (NDT) is a technique to determine the integrity of a material, component or structure. The commonly NDT methods used for the concrete are dynamic modulus of elasticity and ultrasonic pulse velocity. The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures, and is highly sensitive to the cracking. The velocity of ultrasonic pulses travelling in a solid material depends on the density and elastic properties of that material. Non-destructive testing namely, dynamic modulus of elasticity and ultrasonic pulse velocity was measured for high strength concrete incorporating cementitious composites. Results of dynamic modulus of elasticity and ultrasonic pulse velocity are reported and their relationships with compressive strength are presented. It has been found that NDT is reasonably good and reliable tool to measure the property of concrete which also gives the fair indication of the compressive strength development.
Chaohe Chen, Yong Huang and Guangfan Li
I. K. Mohammad "Non-Destructive Testing for Concrete: Dynamic Modulus and Ultrasonic Velocity Measurements", Advanced Materials Research, Vols. 243-249, pp. 165-169, 2011