Preparation method of recycled brick-concrete aggregate pervious concrete

Abstract

The invention discloses a preparation method of recycled brick-concrete aggregate pervious concrete. The method comprises the following steps of: carrying out screening treatment, water flotation impurity removal treatment and drying collection on recycled brick-concrete aggregate to prepare available recycled brick-concrete aggregate, pre-wetting the recycled brick-concrete aggregate, adding thepre-wetted recycled brick-concrete aggregate and natural stones into a stirrer, adding 50% of weighed mixing water into the stirrer, and stirring for 30 seconds; sequentially pouring weighed medium sand and cement into the stirrer, continuously stirring for 30 seconds, finally uniformly mixing the weighed water reducing agent with the residual 50% of mixing water, pouring the mixture into the stirrer, and stirring for 3 minutes to obtain uniformly-stirred recycled brick-concrete pervious concrete. According to the invention, effective recycling of the building brick-concrete waste is realized,the loss of natural stone resources is reduced, the recycling rate of renewable resources is improved, and the mechanical property strength of later-stage formed concrete is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing recycled brick-concrete aggregate permeable concrete. Background technique [0002] With the continuous advancement of urbanization in our country, some new problems inevitably arise. On the one hand, the construction solid waste generated in the process of urban construction, renovation, and demolition is also increasing, of which brick-and-concrete waste is the main type. These construction wastes occupy a large amount of land resources and cause serious environmental pollution; on the other hand, as the original ground of the city is gradually covered by buildings and cement pavement, more and more rainy days and urban "urban" are appearing in the city. heat island effect". How to efficiently recycle construction waste and further explore the new uses of its recycled materials is very important. [0003] The invention patent with the applica...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing technology, due to the defects of the treatment process, the recycled aggregate particles are likely to have many edges and corners, the surface is uneven, and a large amount of cement particle powder is attached. , high water absorption, can be widely used in pavement laying

However, iron nails, glass fragments, wood, sawdust, foam, and other waste impurities contained in recycled aggregates have brought many difficulties to the actual production of concrete.

Images