A Red Mud Base Cement Concrete Pavement Composite Pavement Structure

Abstract

The invention discloses a red mud base cement concrete pavement composite pavement structure, which belongs to the field of road engineering and resource utilization of industrial waste. The pavement structure includes cement concrete surface layer mixed with red mud, asphalt mortar bonding layer, red mud base layer and red mud subbase layer, cement concrete surface layer mixed with red mud, asphalt mortar bonding layer, red mud The base course and the red mud sub-base course are laid on the soil foundation from top to bottom. The invention makes full use of the complementary advantages of red mud modified base material and cement concrete material stiffness, forms a new cement concrete pavement structure through reasonable structure combination, realizes the application of industrial waste red mud in the base layer and surface layer of concrete pavement, and improves the The uniformity of the stiffness of the base layer of the cement concrete pavement prevents the occurrence of diseases such as broken boards and pumping, and improves the structural service life of the cement concrete pavement while realizing the resource utilization of red mud from industrial waste.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a composite pavement structure of red mud base cement concrete pavement. Background technology [0002] Red mud is the polluting waste residue discharged when extracting alumina from aluminum industry. Generally, 1.0 ~ 2.0 tons of red mud will be produced for every 1 ton of alumina produced. The world produces about 70 million tons of Bayer process red mud every year, and China produces more than 30 million tons of red mud every year. At present, a large amount of red mud can not be fully and effectively utilized, and can only be stacked in a large area of storage yard, occupying a large amount of land and causing serious pollution to the environment. Although the technology of using red mud as road base material has been disclosed in a large number of documents, and the technology of using red mud as road base material has been disclosed in a large number of documents, because the red...

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Problems solved by technology

However, the cement-stabilized macadam structure or lime-fly ash macadam structure used in the base and sub-base of traditional cement concrete pavement structure varies greatly in strength, and the temperature shrinkage and drying shrinkage cracks are relatively serious, which may easily cause broken boards, voids, and cracks in the cement concrete pavement. Diseases such as pumpkin

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