Crack repairing method of concrete wall or terrace

Abstract

The invention relates to a crack repairing method of a concrete wall or a terrace. The method comprises the following steps: a: digging a V-shaped groove in the wall or the terrace; b: cleaning dust of the V-shaped groove; c: brushing a basic level processing agent in the V-shaped groove; d: filling the V-shaped groove with a sealant; e: digging a communicating hole and filling the communicating hole by using a chemical grouting method. The crack repairing method is simple. Additionally, no damage is caused to a wall surface during crack repair. A crack of a crossed hole or of an oblique holeis filled by using a chemical grouting method. Finally, concrete cracks are densely filled with sediments. Therefore, concrete cracks are healed. The repair effect is good.

Description

technical field

[0001] The invention relates to a method for repairing cracks in concrete walls or floors. Background technique

[0002] Cement concrete is one of the largest and most widely used building materials in the world, such as reinforced concrete bridges, which are currently an important structural form of bridges. At present, my country's annual concrete output has reached 1 billion cubic meters, an increase of more than 2 times compared with 1995. By 2010, the cement output has increased to 800-850 million tons, which has almost doubled from 490 million tons in 1996. More than one-third of the world's total cement production. However, there are some defects in cement concrete materials, such as heavy weight, low tensile strength, and easy shrinkage cracking (including plastic shrinkage cracking, hardening drying shrinkage cracking), etc. These defects limit its wider use in structural engineering. Among them, the defect that cement concrete is prone to drying sh...