Title : EFFECTIVENESS OF EXISTING TECHNIQUES FOR DETERMINING DURABILITY OF CONCRETE
Authors : Rishi Gupta and Alireza Biparv
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Price : 250
Abstract : Countries around the world are facing a huge challenge with aging infrastructure and the large deferred investments required to replace the deteriorating structures. As we start to plan this next phase of reconstruction, the issues related to measurement and evaluation of concrete durability is at the forefront. The existing techniques used to predict durability of concrete and cement- based materials include measurement of porosity, permeability, flow of ions or even measurement of resistivity of concrete. In this paper the effectiveness of these techniques is discussed. Since concrete is prone to cracking, the need to develop techniques that account for cracking is highlighted. A technique developed by the authors to account for self-sealing of cracked concrete is also briefly introduced. This simple technique involves inducing cracks under controlled conditions in concrete specimens and then subjecting the specimens to constant water head to quantify the self-sealing capability of concrete.