EVALUATING METHOD OF BREAKAGE CAUSED BY CUTTING PROCESSING OF CONCRETE, AND CUTTING METHOD OF CONCRETE BASED ON THE EVALUATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an evaluating method that can quantitatively evaluate the degree of breakage by cutting, and can serve as a useful basis for selecting an appropriate cutting method according to the strength and property of concrete.;SOLUTION: The characteristic amount of a crack of a concrete cut part and the adhesion strength of repair/reinforcement material constructed in this cut part establish an associated relation, depending on the strength or material (mixed component) of the concrete. Therefore, data for evaluation where the characteristic amount of the crack generated by cutting is matched with the adhesion strength is previously stored, the surface of existing concrete is cut by repair/reinforcement engineering work, then a sample in the cut part is extracted, the characteristic amount of a crack existing in a smooth observation surface formed by cutting the existing concrete in the depth direction is measured, and the breakage by cutting the existing concrete is quantitatively evaluated by collating the measured data with the data for evaluation.;COPYRIGHT: (C)2007,JPO&INPIT