Method for rehabilitating concrete surface injury using high-strength abrasion-proof basalt fibre mortar

Abstract

The invention discloses a process for repairing the surface wounds of concrete with basalt fiber plaster which is high strength and abrasion resistance. The repairing steps comprise firstly conducting chiseling, cleaning and curing moisture holding for the repair surface, and then brushing binding agent on the repair surface, then brushing basalt fiber plaster after slightly drying, and finally conducting the curing. The invention primarily proposes a process for repairing the large area wound such as surface concrete aging, carbonizing and peeling and cracking and the like on the hydraulic structure such as locks, dams and bridges and the like through preparing basalt fiber plaster which is high strength and abrasion resistance with chopped basalt fiber. The experiment shows that the surface concrete of hydraulic structure which is repaired has excellent mechanic property, impact abrasion resistance and excellent durability such as permeability resistance and anti-freezing, and favorable binding property, can meet the technical requirements of high speed sand inclusion current abrasion and corrosion resistance and ship attack and the like. And the repairing process has simple technology, low cost and excellent effect.

Description

technical field

[0001] The invention relates to a method for repairing concrete on the surface of water and soil structures, in particular to a method for repairing aging, carbonization, spalling and cracking of surface concrete of hydraulic structures such as ship locks, dams and bridges. Background technique:

[0002] Concrete structures are one of the most widely used structural forms in the field of civil engineering. However, due to the defects of the concrete material itself and the combined effects of its mix ratio, maintenance, construction environment and use factors, the performance of many cement-based materials has declined, seriously affecting its performance and life. However, due to the long-term erosion of water flow and sandy water flow, the hydraulic concrete structure suffered more significant damage: in 1984, a survey of 22 coastal hydraulic structures in Zhejiang found that 3 of them were severely damaged and abandoned, and they were in operation. In onl...

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