Masonry mortar for underwater acid environment

Abstract

The invention discloses masonry mortar for an underwater acid environment. The masonry mortar comprises, by weight, 180-220 parts of common cement, 30-50 parts of special cement, 695-705 parts of natural medium sand, 20-30 parts of resin adhesive powder and 30-40 parts of special additives, wherein the special additives are mixed by, by weight, 2-5 parts of thickening agent, 0.5-1 part of super plasticizer, 5-8 parts of thixotropic agent, 12-15 parts of thickening time control agent and 5-8 parts of early strength agent. The masonry mortar has the advantages that by regulating the additives special for high-performance underwater masonry mortar and adding resin materials good in acid resistance, masonry mortar components are prevented from have reaction under acid conditions, the hardening and performance of the mortar cannot be affected, and the masonry mortar is less prone to dispersing, good in constructability, resistant to acid, capable of being normally hardened under water and high in strength under water operation conditions.

Description

technical field [0001] The invention relates to a masonry mortar for underwater acidic environment. Background technique [0002] When cement mortar or concrete is in the state of water or under high disturbance, the slurry will easily segregate when it meets water (cement is easy to lose, sand and gravel are easy to separate), and some components will participate in the reaction under acidic conditions, which will affect the hardening and concrete or properties of mortar. In the past, the repair of construction or damage of underwater concrete buildings was generally completed by building cofferdams, draining water, and then pouring concrete or building walls and plastering mortar. This type of project has the disadvantages of time-consuming, labor-intensive and expensive. The second method is to use chutes, conduits, pumps, open bottom containers, etc. to transport ordinary concrete or mortar to the underwater pouring or repairing position to complete. But the common un...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of masonry mortar for underwater acidic environment, to solve the problem that the existing cement mortar participates in the reaction under acidic conditions and affects the performance of hardening and concrete or mortar