The invention relates to a concrete bridge structure surface protective
coating material based on pure acrylic
emulsion and a preparation method thereof. Most of the conventional concrete surface protective coatings are poor in
carbonization resistance and
ageing resistance and complex in brushing process steps. The concrete bridge structure surface protective
coating material is prepared by mixing the following components together in parts by weight: 75 to 85 parts of pure acrylic
emulsion, 1 to 3 parts of pure acrylic
emulsion, 0.3 to 0.5 part of a water-based anti-aging agent, 1 to 3 parts of
titanium pigment, 1 to 3 parts of
sericite, 3 to 7 parts of a functional auxiliary agent
system, 1.5 to 3.5 parts of a regulating auxiliary agent
system, 0.5 to 2 parts of a leveling-type
thickening agent and 5 to 10 parts of water, wherein the functional auxiliary agent
system consists of a hydrophobing agent, a
stain-resistant agent and an
adhesive force
accelerant in a
mass ratio of 3:1:2; and the regulating auxiliary agent system consists of an antifoaming agent and a dispersant in a
mass ratio of 1:6. By adopting the concrete bridge structure surface protective
coating material, concrete achieves an excellent protection effect under an accelerated
carbonization condition, the
carbonization of the concrete is delayed, the
ageing resistance of the concrete is excellent, the coating brushing process steps are simple, and all links from production to construction are safe and environment-friendly without environmental
pollution.