Investigation of Reinforcement Detailing and Estimation of Concrete Strength Using NDTS

Abstract

Monitoringstructural healthwith non-destructive testing is beingusedwith frequency at presentin the construction industry.Acquiring the strength of standing buildings is considered a foremost task. Above mentioned observations may be of use in case the standing building or structure has been harmed in any way or when the quality of the material is to be looked at because of some detected defects. Hence for reasons already stated non-destructive testing or (NDT) is an essential feature. Compressive strength estimates using common techniques such as rebound hammer or ultra-sonic pulse velocity tests have not always provided the most accurate results. Accurate estimationof compressive strength using non-destructive methodsissubject to severalprinciples. Factors that play the foremost role in determining the compressive strength,are condition of the surface and the density of the material being tested. This primarily translates into the concrete matrix being applied and the size, spacing, clear cover and placement pattern of steel rebars. To account for theseminor discrepancies of the above mentioned NDTs especially as regards to clear cover, size,and spacing of rebars a parallel set of readings for these values was taken using structure scan mini and accuracy determined by observing closely both values and comparison. Simultaneously carrying out the above-mentioned tests led to more precise results as regards compressive strength values of concreteand its reinforcement detailings.This research is aimed at establishing a viable comparisono factual casted specimens withexperimentalvalues of cover meter, rebound hammer,and electromagnetic pulse velocity of structure scan mini.