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

A cement concrete and pavement repair technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of low early strength, high engineering cost, long maintenance period, etc. The effect of reduced quantity, rapid development and stable development

Inactive Publication Date: 2011-08-31
交通运输部公路科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Effect test

Embodiment 1

[0028] Early-strength and fast-pass concrete for repairing cement concrete pavement, the formula is as follows: PR42. 0.03%, fly ash content 0.5%, silica fume content 0.5%.

Embodiment 2

[0030] Early-strength and fast-pass concrete for repairing cement concrete pavement, the formula is as follows: PR42.5 cement content 16%, water content 7%, sand content 30%, stone content 46%, high-efficiency water reducing agent content 0.04%, early strength agent content 0%, fly ash content 0.4%, silica fume content 0.6%.

Embodiment 3

[0032] Early-strength and fast-pass concrete for repairing cement concrete pavement, the formula is as follows: PR42.5 cement content 15.5%, water content 7%, sand content 30%, stone content 47%, high-efficiency water reducing agent content 0.04%, early-strength agent content 0%, fly ash content 0%, silica fume content 0.5%.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/02Y02W30/91C04B14/02C04B14/06C04B18/08C04B18/146C04B20/008C04B22/143C04B2103/302
Inventor 杜天玲付智田波罗翥覃润浦王稷良刘英王大鹏彭鹏潘昊宇
Owner 交通运输部公路科学研究院
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