METHOD AND ARTIFICIAL LIGHTWEIGHT AGGREGATE USING WASTE CONCRETE POWDERS OBTAINED WASTE CONCRETE

摘要

The present invention relates to a method for producing lightweight aggregate using fine powder generated when producing waste concrete as aggregate. Since existing recycling methods for waste concrete fine powder are inadequate and not yet proved to be effective, all of them are currently disposed of in landfill. The present invention aims to provide a lightweight aggregate having a suitable strength, specific gravity and absorption rate using waste concrete fine powder and a method for producing the same, in order to achieve the above object, the present invention is a clay 39.5 ~ 48.5%, dry process 30-40% of waste concrete fine powder, foaming agent 1 ~ 3%, fluxing agent 2.5%, water 15%, water reducing agent 1.0 ~ 2.0%, and firing temperature is 10 minutes to 20 minutes at 1100 ℃ ~ 1200 ℃. Provides a lightweight aggregate using the waste concrete fine powder generated in the dry process, characterized in that the step of firing powder and a method for manufacturing the same, by producing a lightweight aggregate using the waste concrete fine powder of construction byproducts It can be used as an environmentally-friendly and economical waste recycling efficiency.