METHOD OF REDUCING TEMPERATURE STRESS AT CONCRETE-PLACED JOINT BETWEEN CONCRETE BLOCKS OF BRIDGE GIRDER

摘要

PROBLEM TO BE SOLVED: To provide a method of reducing a temperature stress at a concrete-placed joint between concrete blocks of a bridge girder.;SOLUTION: The method of reducing a temperature stress at the concrete-placed joint, is implemented at the concrete-placed joint between concrete blocks, where concrete 3 is jointedly placed in order to construct a new concrete block 2 in a manner being connected to an existing concrete block 1, by heating at least one end of the existing concrete block 1, adjacent to the new concrete block 2 to be cured. Specifically the existing concrete block 1 is heated to a predetermined temperature, and thereafter the new concrete 3 for the new concrete block is placed. Alternatively the new concrete 3 for the new concrete block is placed, and thereafter the existing concrete block 1 is heated to the predetermined temperature.;COPYRIGHT: (C)2009,JPO&INPIT