Fast hardening early strength concrete for overall width repair of cement concrete pavement
A cement concrete, full-thickness technology, applied in the field of building materials, can solve the problems of unsuitable road maintenance management unit maintenance, existence of flatness, load transfer between plates, poor economy, etc., to facilitate large-scale popularization and application, reduce maintenance and repair. Cost, repair speed effect
Active Publication Date: 2013-10-23
CCCC HIGHWAY MAINTENANCE ENG TECH
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Abstract
The invention relates to a fast hardening early strength concrete for overall width repair of a cement concrete pavement. The fast hardening early strength concrete is prepared from the following raw materials in parts by weight: 450-480 parts of cement, 620-660 parts of medium sand, 1120-1140 parts of macadam, 140-160 parts of water and 4-6 parts of additive. The fast hardening early strength concrete has the beneficial effects that (1) the fact repair material for the cement concrete pavement, provided by the invention, has the characteristics of high early strength, high overall width repair speed for the damaged cement concrete pavement, capability of realizing clear road within 24h, convenience for realizing favorable traffic conditions, good working performance and the like; and (2) the cement, the medium sand, the macadam and the additive adopted by the invention are all common base materials on the market, and special materials which have a fast hardening early strength effect, but are high in cost and are not widely applied are not adopted, so that the fast hardening early strength concrete can be favorably popularized and applied in a large scale, and the maintenance and repair cost is reduced.
Technology Topic
Repair materialCrushed stone +6
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PUM
Property | Measurement | Unit |
Flexural strength | 5.06 | mPa |
Compressive strength | 41.5 | mPa |
Flexural strength | 4.99 | mPa |
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