Method for preparing regenerative road material by using waste concrete and construction method thereof

Abstract

A regeneration road material produced with waste concrete is used as a subbase material of roads and construction service roads and comprises waste concrete particles, cement, admixture, water reducer, expansion agent and water. The preparation method includes: separating; removing impurities, removing waste concrete contaminated by radioactive materials, heavy metals and other harmful impurities; crashing and screening; adding admixtures, water reducer, expansion agents, cement and water for mixing into a cement stable waste cement regeneration road material. The construction method of the regeneration road material produced with waste concrete includes: preparing feed according to the designed particle size and evenly mixing the cement and regeneration materials after adding water and paving in equilibrium continuously and uninterruptedly; rolling by using rollers to roll and shape the paving surface and compacting to the design required compaction degree; sprinkling for curing and sweeping away the soil sundries from the subbase surface and spraying prime coat asphalt with asphalt spray car. The invention makes full use of waste concrete to produce road materials, thereby expanding the sources of construction materials and solving the problem of recycling of waste concrete, so that the environment pollution is reduced and the natural construction resources are fully utilized.

Description

technical field [0001] The invention relates to a road construction material and a construction method thereof, in particular to a recycled road construction material prepared from waste concrete, a preparation method and a construction method thereof. Background technique [0002] Waste concrete refers to the waste waste concrete produced during the construction, repair and demolition of buildings. With the development of my country's modernization and the acceleration of urbanization, large-scale new city construction and old city renovation have led to an increasing number of construction waste. Waste concrete is the main component of urban waste, accounting for about 30-40% of the total urban waste. Most of the waste concrete is directly stacked or landfilled without treatment, which not only takes up a lot of land, pollutes the environment, but also causes a lot of waste of resources. Since our country has been carrying out large-scale construction in recent years, a l...

AI Technical Summary

Problems solved by technology

Because the physical properties of waste concrete and natural building materials are quite different, such as the water absorption rate of waste concrete is relatively large, usually 3.6-8%, while the water absorption rate of natural aggregate is less than 3%, the construction quality cannot be guaranteed if the usual method is used. and road life

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