METHOD FOR IMPROVING BONDING RIGIDITY OF CONCRETE BY REMOVING DEFECT CONCRETE BEFORE FINISHING CURING AFTER POURING CONCRETE PRIMARILY

摘要

PURPOSE: An improvement method of bonding rigidity of concrete is provided to reduce working hours, to cut down construction cost, and to decrease the construction period by easily removing the defect portion of concrete before finishing curing concrete after pouring first concrete. CONSTITUTION: First concrete is poured primarily, and concrete is cured for 9 to 12 hours. Laitance, dust and defective concrete are eliminated from the surface of the first concrete to expose the concrete aggregate by using a water jet and an air compressor while curing concrete. Second concrete is poured and cured secondarily after removing defective concrete. Bonding strength of concrete is improved by easily removing defective concrete while pouring and curing concrete.