Artificial inorganic marble-face composite-powder concrete cover plate

Abstract

The invention relates to the technical field of concrete and more concretely relates to an artificial inorganic marble-face composite-powder concrete cover plate. The artificial inorganic marble-face composite-powder concrete cover plate comprises a marble surface layer and a concrete bottom layer combined with the marble surface layer, wherein the concrete bottom layer is prepared from raw materials including the following ingredients in parts by mass: 510-600 parts of low-alkalinity silicate cement or ordinary silicate cement, 90-120 parts of silica fume, 130-170 parts of low-calcium level-II fly ash, 150-185 parts of slag powder, 1,150-1,210 parts of river sand, 20-24 parts of composite efficient water reducing agent, 7-12 parts of rust inhibitor, 130-142 parts of water, 80-120 parts of copper-plated steel fiber with the diameter of 0.18-0.25mm and the length of 10-15mm and 0.8-1.5 parts of polypropylene fiber.

Description

technical field [0001] The invention relates to the technical field of concrete, and more specifically relates to an artificial inorganic marble surface composite powder concrete cover plate, which is suitable for trench cover plates used in the fields of electric power, communication, municipal administration and construction. Background technique [0002] Cover materials have the following problems in the process of use in China: traditional concrete cover has low compressive bearing capacity, heavy weight, poor repeated impact resistance, easy to break and brittle, prone to personal or vehicle safety accidents, and monotonous color And it has a great contrast with the green environment; the new resin cover plate has been favored by customers because of its beautiful appearance, diverse colors, good compatibility with the environment, light weight and high strength, but in recent years, with the development of applications, there have been Problems and phenomena such as po...

AI Technical Summary

Problems solved by technology

[0002] Cover materials have the following problems in the process of use in my country: traditional concrete cover has low compressive bearing capacity, heavy weight, poor repeated impact resistance, easy to break and brittle, prone to personal or vehicle safety accidents, and monotonous color And it has a great contrast with the green environment; the new resin cover plate has been favored by customers because of its beautiful appearance, diverse colors, good compatibility with the environment, light weight and high strength, but in recent years, with the development of applications, there have been Problems and phenomena such as poor weather resistance, large difference in thermal expansion coefficient between resin and steel bar and easy separation, gradual degradation of strength due to temperature changes, poor repeated impact resistance, poor UV resistance, brittle fracture during use, etc., which endanger personal safety, and difficult recycling after damage ;Metal cover plates are high in strength, heavy in weight, high in brittleness, and are prone to problems such as theft and brittle breakage that endanger personal safety. In addition, the amount of steel used is too large and the cost is expensive, which is no longer suitable as an energy-saving and environmental protection product.

RPC materials have been continuously researched and developed in China. They are mainly used in railway engineering and bridge prefabrication. It is still blank in other engineering applications, especially not used in trench cover plates.