A STUDY ON THE APPLICATION OF THE VISUAL AND TACTILE EVALUATION TEST FOR EVALUATING FRESH PROPERTIES OF CONCRETE

Abstract

In this study, experiments were conducted to create an evaluation indicator for the visual and tactile tests for concrete with equal slump and slump flow but different fresh properties, which can be used to evaluate flowability and segregation resistance and does not depend on the experience of the evaluators. In order to create an evaluation index that does not depend on the experience of the evaluators, the authors examined styles of expression that do not cause differences in evaluation results and reflected them in the evaluation index. The results of the visual and tactile tests were plotted on the two axes of “flowability” and “segregation resistance”, which can suggest the possibility of understanding the characteristics of concretes with equivalent slump/slump flow.