Green recycled building material

Abstract

The present invention relates to a green recycled building material. The material is characterized in that: the method for producing the green recycled building material comprises the following steps: 1, carrying out mechanical crushing on building wastes from building demolition to obtain recycled sand with a fine sand state; 2, adopting the recycled sand to prepare concrete and mortar, and adding an additive, such that the performances of the concrete mixture meet the following requirements, wherein a ratio of the recycled sand to the additive is 97:3, and the requirements comprise that: the strength grade is C20, the water cement ratio is 0.60-0.62, and the collapsing degree (cm) is 5.0. With the green recycled building material of the present invention, the environmental pollution due to the discharged wastes during the building demolition process is effectively solved, the shortage problem of the natural sand source is solved, and the problems of area occupying due to urban waste stacking, and environmental pollution are reduced. The experiment results show that: performances of compressive strengths, mechanical properties, freezing resistance, carbonization properties and the like of the masonry mortar and the concrete reach or exceed the design standards, wherein masonry mortar and the concrete are prepared by using the recycled sand. In addition, significant economic benefits and significant social benefits are provided.

Description

technical field

[0001] The invention relates to a green recycled building material produced by using waste discharged from demolished buildings. Background technique

[0002] At present, the waste concrete discharged from the demolition of buildings is the largest waste in the construction industry. The discharge of waste concrete is increasing every year, causing serious environmental problems and causing secondary pollution to the environment. However, sand and gravel aggregates, which are the most used in the production of concrete in the construction industry, have been exhausted and in short supply in a few areas. and natural landscape. Contents of the invention

[0003] The present invention overcomes the above existing defects, and aims to provide a green recycled building material for solving the waste discharged from the demolished buildings.

[0004] Brief description of the content of the green recycled building material of the present invention:

[0005] The...