Abstract: Although the Poisson's ratio of concrete is known to vary within a significant range of values, the resulting effects on impact-echo test results have not been studied. In this regard, background to the problem is given ...

Abstract: This study presents a practical approach for imaging concrete pavement and bridge deck slabs for the presence of delamination defects. Air-coupled impact resonance (impact-echo) test data are presented as a fused image by ...

Abstract: In this paper, air-coupled impact-echo is successfully applied for nondestructive evaluation of concrete. The air-coupled sensor is a small (

Abstract: The impact-echo method has been developed over the past

Abstract: Torsion tests have been used to evaluate the shear response of concrete. The complete load-deformation response of unnotched concrete specimens subjected to torsion is difficult to obtain because of test instabilities. In ...

Abstract: In this paper cyclic quasi-static and constant amplitude fatigue responses of concrete subjected tensile compression–tension

Abstract: The ultrasonic shear-wave reflection coefficient at the interface between a hydrating material and a buffer material was monitored immediately after mixing as a function of time to study setting behavior of self-compacting ...

Abstract: The goal of the research presented here is to investigate the extent of healing of cracked concrete. A feedback-controlled test was used to generate a crack with a controlled width in concrete specimens. Then, water ...

Abstract: The Illinois Department of Transportation (IDOT) initiated a failure investigation to determine the distress mechanisms causing premature longitudinal cracking on continuously reinforced concrete pavements (CRCP) on several ...