Exposed reinforced concrete repairing mortar and use method thereof

Abstract

The invention discloses exposed reinforced concrete repairing mortar and a use method thereof. The exposed reinforced concrete repairing mortar is prepared from the following raw materials: magnesium oxide, ammonium dihydrogen phosphate, fly ash, gypsum, sand, water, sodium tripolyphosphate, borax and an auxiliary agent. The concrete is prepared from the following raw materials in parts by weight: 25-30 parts of magnesium oxide, 8-13 parts of ammonium dihydrogen phosphate, 7-14 parts of fly ash, 2-3 parts of gypsum, 20-25 parts of sand, 4-7 parts of water, 2-4 parts of sodium tripolyphosphate, 1-2 parts of borax and 1-4 parts of the auxiliary agent. According to the invention, 25-30 parts of magnesium oxide, 8-13 parts of ammonium dihydrogen phosphate, 7-14 parts of fly ash, 2-3 parts of gypsum, 20-25 parts of sand, 4-7 parts of water, 2-4 parts of sodium tripolyphosphate, 1-2 parts of borax and 1-4 parts of the auxiliary agent are matched, and the raw materials of the concrete repairing mortar are selected and improved, so that the fusion degree of the raw materials reaches the best. The self characteristics and the overall reaction effect of all the raw materials are fully exerted, and the setting and hardening speed of the concrete repairing mortar is increased through flow matching of the first step, the second step, the third step, the fourth step and the fifth step.

Description

technical field [0001] The invention relates to the technical field of concrete repair mortar, in particular to a concrete repair mortar with exposed reinforcement and a use method thereof. Background technique [0002] Repair mortar is a special cement-based polymer mortar used for concrete structure surface defects and reinforcement construction. It can be repaired on the surface of industrial and civil concrete buildings that have been cracked, or on industrial and civil buildings that have been damaged and cannot meet the design requirements. Make repairs. [0003] As the age of the building increases, the surface and interior of the building are prone to cracks, the wall skin cracks and falls off, and the wall cracks, etc., which will easily cause the steel bars inside the building wall to be exposed. As time goes by and the external environment Due to the influence of various factors, the cracks in the wall are getting bigger and bigger, and the steel bars are gradual...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a concrete repair mortar with exposed reinforcement and its use method, so as to solve the problems that the prepared concrete repair mortar proposed in the above background technology has slow setting and hardening, low strength, poor wear resistance and low cohesiveness

Images