Preparation method of geopolymer coating material for marine concrete protection

Abstract

The invention relates to the technical field of concrete anticorrosion, and provides a method for preparing a geopolymer coating material used for protecting a marine concrete. The method comprises the following steps: weighing the raw materials in parts by weight; adding an aluminosilicate material, an expanding agent and a fibrous material in a mixer, stirring the materials to uniformly disperse the fibrous material; adding water, an alkali exciting agent, a water reducer and a suspending agent in a stirrer, stirring the materials for dissolving the alkali exciting agent and the water reducer, swelling the suspending agent; adding a water-soluble polymer, a coupling agent, and a mixture prepared at an early stage, continuously stirring the materials, and adding a fine aggregate and an antifoaming agent to obtain the geopolymer coating material. The method employs multiple guarantee measurements, the polymer coating material is cooperated for enhancing anti-dry-shrinkage cracking performance; an organic functional material is subjected to complex formulation for enhancing hydrophobic and anti-ion penetration functions of the geopolymer coating material; by preferably selecting a functional auxiliary agent, the rheological performance of the geopolymer coating material is increased, bubbles in a slurry during a preparation process can be eliminated, and the construction performance of the geopolymer coating material is reinforced.

Description

technical field The invention relates to the technical field of marine high-performance concrete anticorrosion, in particular to a preparation method of a geopolymer coating material for marine concrete protection. Background technique my country is a big ocean country, and it is an important strategic decision to develop marine resources and develop marine economy. Marine engineering construction is an important prerequisite and basic guarantee for comprehensive marine development. However, due to the particularity of the marine environment (strong radiation, high salinity, high humidity, etc.), it will cause corrosion and damage of metal materials, cracking and expansion of reinforced concrete structures, and polymer materials. Deformation and deterioration etc. As an important material in marine engineering, concrete has high requirements for its durability. Conventional marine high-performance concrete has certain effects on inhibiting the deterioration and failure of ...

AI Technical Summary

Problems solved by technology

At the same time, the easy shrinkage and cracking of geopolymers in the process of setting and hardening can be alleviated by MgO-based expansion agents and PP fibers, but in practical applications, this mitigation effect is not enough

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