Early-strength fast-track concrete for repairing cement-concrete road surface

Abstract

The invention relates to early-strength fast-track concrete for repairing a cement-concrete road surface. The early-strength fast-track concrete comprises cement, sand, stone and water, and is characterized by also comprising additives and a mineral admixture, and concretely comprising 10 to 20 percent of cement, 5 to 10 percent of water, 28 to 32 percent of sand, 44 to 48 percent of stone and 0 to 1.0 percent of mineral admixture. The invention overcomes defects of not high early strength, long curing period and traffic impact of the conventional common curing repair material for the cement-concrete road surface and defects of low durability and high construction cost of partial quick curing repair materials, and provides economical and practical early-strength fast-track concrete which meets the requirement of durability of the cement-concrete road surface and quickly cures and repairs the cement-concrete road surface.

Description

technical field [0001] The invention relates to an early-strength fast-passing concrete used for rapid repair of old slabs on highway cement concrete pavement after excavation, in particular to an early-strength fast-pass concrete for repairing cement concrete pavement. Background technique [0002] Cement concrete pavement has the advantages of high strength, durability, and low maintenance cost. However, my country is rich in cement resources, and cement concrete pavement has been widely used. However, the cement concrete pavement not only bears a large number of heavy vehicle loads, but also suffers from various environmental factors during its use, which eventually leads to structural or functional damage to the cement concrete pavement. Especially in recent years, with the rapid development of the national economy, not only the traffic volume has increased significantly, but also the phenomenon of overloading and exceeding the limit has become increasingly serious, whic...

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the disadvantages of low early strength, long maintenance period, and impact on traffic of existing common maintenance and repair materials for cement concrete pavement, as well as the disadvantages of poor durability and high engineering cost of some rapid maintenance repair materials. , to provide a kind of early-strength and fast-passing concrete for cement concrete pavement repair that is economical and meets the durability requirements of cement concrete pavement

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