Evaluation of non-destructive testing of high strength concrete incorporating supplementary cementitious composites

Mohammad Iqbal Khan

Resources, Conservation & Recycling, 2012, vol. 61, issue C, 125-129

Abstract: 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 sorptivity, dynamic modulus of elasticity, ultrasonic pulse velocity, etc. The sorptivity is an easily measured material property which characterizes the tendency of a porous material to absorb and transmit fluids by capillarity. The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures. The velocity of ultrasonic pulses traveling in a solid material depends on the density and elastic properties of the material. In this investigation, non-destructive testing namely, sorptivity, dynamic modulus of elasticity and ultrasonic pulse velocity was measured for high strength concrete incorporating cementitious composites. It was found that the incorporation of fly ash resulted lower sorptivity, especially with up to 20% fly ash contents and inclusion of microsilica reduced sorptivity significantly. NDT is reasonably good and reliable tool to measure the property of concrete which also gives the fair indication of the compressive strength development.

Keywords: High strength concrete; NDT; Supplementary cementitious composites (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:eee:recore:v:61:y:2012:i:c:p:125-129

DOI: 10.1016/j.resconrec.2012.01.013

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