Concrete for stepping stairs and manufacturing method of concrete

Abstract

The invention provides concrete for stepping stairs. The concrete is prepared from 100-400 parts of cement, 50-200 parts of river sand, 20-300 parts of cobblestones, 10-150 parts of marble waste fragments, 0.5-5 parts of a water reducing agent and 500-4000 parts of water. The preparation method comprises the following steps: adding the cement into the river sand, performing sufficient stirring, adding the marble waste fragments, performing sufficient stirring again, adding a proper amount of water, performing sufficient stirring, supplementing the residual water after stirring, finally addingthe cobblestones, and sufficiently and uniformly stirring the substances. According to the scheme, the structural strength and stress of the stepping stairs are effectively improved, meanwhile, the manufacturing cost of the stepping stairs is reduced, reutilization of building material waste is effectively improved, and pollution to the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to concrete for stepping stairs and a manufacturing method thereof. Background technique [0002] Concrete is the most widely used building material in modern times. It has the advantages of abundant raw materials, low price, simple process, high strength and good durability. Ready-mixed concrete is a kind of concrete, which refers to cement, aggregates, water, admixtures, mineral admixtures and other components mixed in according to a certain proportion in a mixing station after being measured and mixed, and sold. Concrete mixture transported to the place of use within the specified time by transport truck. Because of the high environmental impact of on-site construction, ready-mixed concrete has received increasing attention. However, after mixing concrete materials, chemical reactions will occur over time, which will have adverse effects on concrete fluidity, slump loss, worka...

AI Technical Summary

Problems solved by technology

At present, the existing concrete admixtures can reduce mixing water, increase workability, control setting time, early strength, reinforcement, durability, dyeing, air-entrainment, etc., but the admixtures generally have single performance and cannot meet various needs. , and there is no admixture that can effectively reduce the impact of high mud content sand on the performance of concrete