Waste concrete recycling method with low processing cost

Abstract

The invention discloses a waste concrete recycling method with a low processing cost. The invention belongs to the technical field of concrete processing. The method comprises: arranging hydrogel powder, drying the prepared hydrogel, preparing the hydrogel into a solidified block, crushing the waste concrete into powder with the same size as the waste concrete granular material, at the moment, adding the waste concrete granular material and the hydrogel powder into stirring equipment, and mixing. When adding waste concrete granular materials and hydrogel powder into stirring equipment, stirring equipment needs to be set, stirring directions are the same, the hydrogel is soft in property, the shape is kept, a large amount of water can be absorbed, the mixed modified concrete has certain water absorption performance, the shape of the modified concrete is not easy to change after the modified concrete absorbs water, the internal adhesiveness of the modified concrete is improved, the interior of the modified concrete is not easy to be too dry due to the fact that the hydrogel has certain water absorption performance, and cracks of the modified concrete due to the fact that the interiorof the modified concrete is too dry are reduced.

Description

technical field [0001] The invention belongs to the technical field of concrete processing, in particular to a waste concrete recycling method with low processing cost. Background technique [0002] With the vigorous development of commercial concrete in our country, the concrete industry has become a pillar industry in the field of building materials. However, as the largest man-made engineering material, once a building or structure is disintegrated, it will also become a source of construction waste. "The main force", currently in our country, the annual discharge of concrete waste exceeds 100 million tons. In the past, most of these waste concrete could not be recycled well. or landfill), at the same time, as the pillar industry of the building materials industry, the cement industry is also a well-deserved "big household" in terms of resource and energy consumption, which is contrary to the current situation of resource shortage and energy shortage in the 21st century. ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a waste concrete recycling method with low processing cost, which solves the problem that the internal chemical properties of concrete are changed after calcination, making it relatively fragile. Concrete made of recycled concrete powder not only has poor water absorption capacity, but also has poor adhesion between internal concrete. When the weather is too hot, the moisture in the concrete will evaporate quickly, and the heat absorption capacity of concrete is relatively low. Strong, so that the temperature of the pavement poured with concrete is often high, and it is easy to dry and crack. At this time, the concrete is prone to cracks due to being too dry.