Environmentally Friendly Mortar Composition for Repairing Concrete Structure Using Cold-Warm Slag Powder and Method for Repairing Concrete Structure Using the Same

摘要

The present invention relates to an eco-friendly mortar composition for repairing concrete structures using slow-cooled slag powder and a method for repairing concrete structures using the same, and more particularly, as a binder for concrete, fine powder of blast furnace quenching slag and fine powder of blast furnace slow cooling slag, which are industrial by-products in addition to cement, as a binder for concrete. It is used to construct a mortar for repairing concrete structures, and by using it to repair and construct concrete structures, it is possible to improve eco-friendliness, crack resistance, acid resistance, adhesion, tensile strength and durability, and freeze and thaw resistance. It relates to an eco-friendly mortar composition that can increase the long-term durability of and to a concrete structure repair method using the same. The eco-friendly mortar composition for repairing concrete structures using slow-cooled slag powder according to the present invention can densely fill the voids between cements, so it can prevent the penetration of harmful chemicals or chlorides through the voids, thereby dramatically shortening the life of the concrete structure. It can be extended, has excellent physical properties such as compressive strength and flexural strength, and has the advantage of significantly reducing manpower and cost due to the extension of the repair period. By recycling slag powder, blast furnace cold slag powder, etc., resource recyclability can be increased, and the amount of by-products to be discarded can be reduced, thereby preventing secondary environmental pollution caused by waste and improving eco-friendliness.