Recycling repairing method for cement concrete pavement

A technology of cement concrete and cement, which is applied to cohesive pavement paved on site, roads, roads, etc., which can solve the problems of affecting road safety, long maintenance period, waste, etc.

Inactive Publication Date: 2017-08-18
广西壮族自治区浦北公路养护中心 +1
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the traffic must be closed during the plate replacement process, and the maintenance period is long, which affects the safety of road traffic; the cost is relatively high, about 250 yuan per square meter; recycling" initiative

Method used

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  • Recycling repairing method for cement concrete pavement

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Experimental program
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Embodiment

[0020] Construction preparation: Select the slabs with severe pavement breakage, use the hook machine or gun machine to break, and break the old concrete slabs into old concrete blocks within 30cm for later use.

[0021] Subgrade treatment: Refill or overturn the weak foundation, clean the bottom thoroughly, and the degree of compaction of the subgrade after treatment should not be lower than 95%.

[0022] Sand cushion construction: Evenly spread a 1cm-thick sand cushion on the treated foundation, and the sand cushion should preferably use river sand with a specification of medium sand.

[0023] Construction of stabilized crushed stone subbase: choose 15-25cm stones and place them evenly on the base surface, with the big side facing down and the small side facing up. : medium sand) to fill the gap between stones.

[0024] Construction of graded crushed stone base: Roll cement blocks over 20cm into crushed stones with a maximum nominal particle size of 5cm, mix them with co...

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Abstract

The present invention discloses a recycling repairing method for a cement concrete pavement. The pavement structure is constructed in the following steps: roadbed treatment, sand cushion construction, stable gravel subbase construction, graded gravel base construction and asphalt gravel seal coat construction from bottom to top sequentially. An asphalt gravel seal coat adopts two-layer type construction, and a graded gravel base and a stable gravel subbase are made of broken cement panel materials. The method can be applied to road network projects, waste materials of the old cement concrete pavement can be fully used, and thus the problem of difficulty in recovering construction waste is effectively solved; furthermore, the construction is convenient, the quality is reliable, the pavement structure having a certain carrying capacity is obtained, driving requirements are fully met, and the service life of the pavement is greatly prolonged; and the road closure duration for construction and maintenance is short, and the frequency of traffic accidents can be reduced. The present invention provides a green construction technology for road buildings, and is a convenient, economical, safe and high-quality cement concrete pavement maintenance method.

Description

technical field [0001] The invention belongs to the technical field of pavement regeneration, and in particular relates to a cement concrete pavement recycling and repairing method. Background technique [0002] Severely broken slabs on the traditional cement concrete pavement are generally treated by replacing them with new slabs, that is, after the concrete on the original pavement is chiseled, the concrete of the same thickness as the original slab is paved. After the cement pavement has been replaced, the base is affected by the excavation process and the joints of the old and new concrete pavement are subjected to uneven stress. Generally, the panels will be damaged again after 2 to 3 years of use. Moreover, the traffic must be closed during the plate replacement process, and the maintenance period is long, which affects the safety of road traffic; the cost is relatively high, about 250 yuan per square meter; recycling” initiative. [0003] The recycling of cement con...

Claims

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Application Information

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IPC IPC(8): E01C7/14
CPCE01C7/147
Inventor 莫德兴梁进钦冯永平张大斌陈本桂黄斌翁仁智廖新吴可添滕昌宏黄杰陈宏飞何上伟
Owner 广西壮族自治区浦北公路养护中心
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