A Quick Repair Method for Pavement

Abstract

The invention relates to the field of road construction and discloses a quick repair method for roads which comprises the following steps: (1) flushing a damaged road to keep the damaged road clean and taking the damaged road as a cement stabilized macadam base; (2) laying steel mesh on the surface of the damaged road; (3) carrying on pouring construction of concrete; (4) carrying on maintaining operations after finishing the pouring construction of the concrete. The concrete comprises, by weight, 40-70 parts of high alumina cement, 400-600 parts of Portland cement, 20-30 parts of magnesium oxide, 100-150 parts of active admixtures, 200-300 parts of inert admixtures, 50-100 parts of 0.63-8mm bauxite, 850-1100 parts of river sand with the fineness modulus of 2.0-2.7, 10-15 parts of high performance water reducers, 165-230 parts of water and 80-160 parts of toughening fibers.

Description

technical field [0001] The invention relates to the field of road construction, in particular to a method for quickly repairing road surfaces. Background technique [0002] At this stage, when the concrete pavement is seriously damaged, it is necessary to renovate the pavement as a whole. The repair method is usually to remove the pavement as a whole, re-tamp the foundation of the water-stabilized layer, and then repair the concrete layer. Generally, the time period is long and the renovation It takes at least half a year for a section of road. Another way is to remove some severely damaged surface courses on the original damaged road surface, re-make the water-stabilized layer, and then pave with standard concrete thickness, the pavement thickness is 150-200mm. The difference between this repair method and the previous method is that it does not need to excavate a large area of ​​the road surface, which can reduce the handling and stacking of construction waste on the road...

AI Technical Summary

Problems solved by technology

[0004] 1. The coefficient of thermal expansion of organic resin concrete and ordinary concrete is quite different (8 to 10 times). When the temperature difference is large, thermal stress cracking of the joint surface is prone to occur. Organic resin concrete is not well combined with ordinary concrete.

[0005] 2. The organic resin concrete is used for pouring, which will cause greater damage to the equipment during the overall construction process, the curing time will be faster, the one-time investment of the equipment will be larger, and cleaning will be troublesome

[0006] 3. The surface color of organic resin concrete needs to be adjusted to be close to the color of ordinary concrete, otherwise the color difference will be large, which will affect driving safety

[0007] 4. The main bonding component of organic resin concrete is resin structural materials. The road surface is prone to aging and embrittlement under long-term ultraviolet radiation, and its weather resistance is relatively poor.

[0008] Therefore, using organic resin concrete to partially repair the damaged pavement cannot solve the problem of pavement cracking.

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