Cement-stabilized construction waste recycled mixture and preparation method thereof

Abstract

The invention discloses a cement-stabilizer construction waste recycled mixture and a preparation method thereof. The recycled mixture is prepared from the following raw materials of aggregate, cementand water, wherein the aggregate is prepared from construction waste recycled aggregate and aggregated rock with the specifications as 10 to 30 mm, 10 to 20 mm, 5 to 10 mm and 0 to 5 mm, and the construction waste recycled aggregate comprises bricks and concrete blocks. The unconfined compression strength of the cement-stabilizer construction waste recycled mixture is 6.8 to 8.8 MPa, so that thecement-stabilizer construction waste recycled mixture can meet a requirement of middle and high-grade roads; the construction waste recycled aggregate comprises the determined use amount of the bricksand the concrete blocks; after the construction waste recycled aggregate is mixed with the certain proportion of new aggregate and water, raw material composition and the use amount of the cement-stabilizer construction waste recycled mixture can be clearer and more definite, and the character of the cement-stabilizer construction waste recycled mixture can be stabler; the preparation method of the cement-stabilizer construction waste recycled mixture is simple; furthermore, a use amount ratio of the bricks to the concrete blocks in the construction waste recycled aggregate can be adjusted, the cement-stabilizer construction waste recycled mixture can meet use of different grades of road base materials, and easiness in operation and implementation is achieved.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a cement-stabilized recycled construction waste mixture and a preparation method thereof, which are mainly used for expressway bases. Background technique [0002] The rapid development of our country's national economy and the large-scale modernization drive have brought about the continuous acceleration of the urbanization process. Statistics show that my country's construction industry is consuming sand and gravel at a rate of about 7 billion tons per year. Endless massive mining and use have resulted in the depletion of resources in some areas, the destruction of rivers, the erosion of mountains, and the deterioration of natural landscapes; at the same time, urban public and civil buildings, municipal facilities, renewal, renovation, and new construction have also produced a large amount of construction waste . According to estimates, demolition of every 10,000 squ...

AI Technical Summary

Problems solved by technology

In the prior art, recycled construction waste aggregates have been used as materials for building road bases, but only part of the recycled aggregates are added, and natural gravel such as limestone is still used as the main material, and part of the recycled aggregates added is mainly construction materials. Concrete blocks or brick-concrete construction waste in garbage, but only using concrete blocks in construction waste will cause waste of bricks in construction waste, and the utilization rate of bricks is low; when using brick-concrete construction waste for recycling , due to the unclear composition and dosage of each raw material in brick-concrete construction waste, the properties of raw materials are unstable. When it is made into a mixture and applied to the road surface, the performance of the road surface is also unstable, and the mixture cannot be intuitive Regulated to meet pavement performance requirements