Concrete micro crack reinforcing construction method

Abstract

The invention discloses a concrete micro crack reinforcing construction method. The construction method includes the following steps: (1) repairing cracks having the width of within 0.3 mm; (2) repairing cracks having the width of 0.3-0.5 mm; and (3) repairing through cracks. Moisture in concrete can be given outward completely, and in this way, the durability of a concrete structure can be greatly improved. It is worth mentioning that CM-DPS has excellent nano reinforcing bar performance, can provide anti-deformation and anti-tensioning performance of a concrete surface, and has absolute technological leading edge. The capillary crystalline protective layer can play a role in structure reinforcement, can play a role in connection such as adhesion, is simple in construction, and is reasonable in cost; and in addition, a reinforcing material has excellent anti-aging performance, can avoid decrease in cohesive property, anti-shearing ability and waterproof performance due to high temperature, rolling, lower temperature and frost.

Description

technical field [0001] The invention relates to a concrete micro-crack reinforcement construction method. Background technique [0002] Concrete cracks are one of the more common and common diseases of concrete buildings, especially water seepage concrete cracks, which may cause structural failure and intensified leakage, and constitute a direct hazard to the safety of the structure. Concrete water seepage cracks are often accompanied by a large amount of calcium precipitation and more impurities on the joint surface. The treatment of such cracks should not only meet the anti-seepage requirements in key parts, but also require restoration of part or even all of the structural strength. [0003] Epoxy mortar is traditionally used for chiseling and caulking. The construction speed of chiseling is slow and the cost is high. The preparation of epoxy mortar is relatively complicated and the cost is also high. Longer, at least 3 to 7 days) compared with short construction time (g...

AI Technical Summary

Problems solved by technology

[0003] Epoxy mortar is traditionally used for chiseling and caulking. The construction speed of chiseling is slow and the cost is high. The preparation of epoxy mortar is relatively complicated and the cost is also high. Longer, at least 3 to 7 days) compared with short construction time (grouting can be done in a few hours after caulking)

However, epoxy mortar also has the problem of poor caulking effect on wet surfaces. Therefore, in the construction of water seepage crack irrigation, some construction units are gradually abandoning the way of epoxy mortar caulking and using cement mortar or clean grout caulking. Construction time, mixed with accelerator to adjust curing time

In the grouting construction, according to the crack situation and the owner's requirements (such as not damaging the concrete surface, not cutting grooves, etc.), on the premise of meeting the caulking requirements, the caulking measures should be simplified as much as possible. Apply epoxy grout; do not cut grooves on the surface of water seepage cracks, pile up quick-setting cement (sand) slurry along the cracks, etc., can also achieve the purpose of sealing the crack surface, but because the material used is epoxy resin, it is easy to age, and at the same time Due to the different expansion coefficients, the grouting material and the structural concrete are separated after thermal expansion and contraction, and the reinforcement equals failure