Waterproof and antirust material for PC component

Abstract

The invention belongs to the technical field of concrete building materials, and particularly relates to a waterproof and antirust material for a PC component. The waterproof and antirust material comprises the following components in parts by weight: 300-360 parts of cement, 500-610 parts of quartz sand, 900-1100 parts of gravels, 30-60 parts of fly ash, 30-50 parts of mineral powder, 150-180 parts of water, 12-20 parts of steel fibers, 8-15 parts of an antirust agent, 6-9 parts of a water reducing agent and 2-5 parts of a defoaming agent. The antirust agent is prepared from the following components in parts by weight: 3-5 parts of tetraamminecopper sulfate, 2-4 parts of modified silica sol, 1-2 parts of acrylate emulsion, 0.5-2 part of sodium fluosilicate and 0.5-1 part of coalescing agent. The antirust agent is matched with the steel fibers, a passive film is formed on the surface of a steel bar in concrete, external water and air are effectively prevented from entering to generatea corrosion reaction, and therefore the antirust performance of a PC component is improved, the preparation method is simple, the strength, water resistance and corrosion resistance of the concrete are improved, the service life of the PC component is prolonged, the production efficiency of the PC component is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of concrete building materials, and in particular relates to a waterproof and antirust material used for PC components. Background technique [0002] Prefabricated concrete (PC) components are widely used in construction, transportation, water conservancy and other fields, and play an important role in national infrastructure construction, such as prefabricated reinforced concrete column foundation, prefabricated steel structure steel column foundation, street lamp billboard column reinforced concrete foundation , prefabricated floors, etc. Usually, the production of PC components involves steps such as mold assembly, steel skeleton installation, concrete pouring, formwork removal and hoisting, component surface repair, and component warehousing and maintenance. [0003] Ready-mixed concrete is usually composed of cement, aggregate, admixture and water in a certain proportion, but the current concrete is pr...

AI Technical Summary

Problems solved by technology

And for improving the durability of concrete or PC member at present, mostly adopt to add water-reducing agent or compacting agent in the ready-mixed concrete formula and improve the strength of PC member, as the concrete formula of improving PC member strength disclosed in the patent document CN111574153A, but However, there are few ways to enhance the anti-rust and anti-corrosion functions of anti-rust PC components

The Chinese patent application document with the publication number CN111961361A provides a thermal insulation and antirust composition, including antirust mortar and sealing paint, but it needs to spray the antirust mortar on the surface of the bound steel cage to carry out Mixed embroidery spraying, and then spraying waterproof sealing paint on the outer surface of the cured anti-rust mortar, such a construction and maintenance process is complicated, the operability is not strong, and the construction difficulty and cost are increased, and the production cycle is long