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Breaking method for cement concrete pavement layer

A technology of cement concrete and concrete pavement, which is applied in the direction of roads, roads, road repairs, etc., and can solve the problems of inability to crack or break cement concrete pavement construction operations, many times of driving, and large energy, and achieve small impact energy and high energy consumption. And the effect of small model and few passes

Inactive Publication Date: 2008-11-26
三明重工施工装备有限公司
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AI Technical Summary

Problems solved by technology

[0005] In view of the fact that the impact roller has a certain technological progress compared with hydraulic picks, pneumatic drills and other equipment for crushing the old concrete pavement, but due to the large number of driving times and the large energy generated during the crushing process, it will affect the buildings beside the old road and take anti-seismic measures. (such as: digging anti-seismic trenches, etc.), so the comprehensive benefits need to be improved
Since the problems in the above aspects cannot be solved, some old concrete road sections with many buildings on the roadside cannot crack or break the cement concrete pavement construction work at all using the existing impact roller crushing concrete pavement technology

Method used

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Examples

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Embodiment Construction

[0013] Generally, the size of the slab of the cement concrete pavement layer is between 3 and 6 meters square. Before the slab is cracked or broken, first use tools such as impact drills, hydraulic hammers or hydraulic picks to drill holes with a diameter of about 10 cm on the slab. Holes, the positions of the holes are basically evenly distributed, the distance between the holes is controlled at about 60cm, 15-20 holes can be drilled on a 4m×3m plate; 12-16 holes can be drilled on a 3m×3m plate; The position of the outer hole is about 50cm away from the expansion joint of the original cement concrete plate.

[0014] The drilling depth should reach the thickness of the original cement concrete slab. The general depth is 20cm to 35cm. After the drilling is completed, put the fly ash graded crushed stone mixture with a grain diameter of about 1cm to 3cm into the hole to fill the hole. That is, not higher than the original road surface.

[0015] Use a low-energy impact roller (g...

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Abstract

A method for crushing cement concrete pavement. Drilling device drills many bore which are different diameter and different depth. sub-grade layer two gray graded broken stone is filled into the bore. The road surface is broken up by low energy shock road roller. The invention is suited for rebuilding the old pavement, and can reduce the shock energy and the time of breaking up the old pavement, decrease the vibration of the surrounding building and the noise influence being constructed.

Description

technical field [0001] The invention relates to a method for crushing cement concrete pavement layers, in particular to a method for impacting and cracking old cement concrete pavement layers by using an impact road roller. Background technique [0002] The cracking of cement concrete pavement layer is the first process of old road restoration, and the efficiency of cracking or breaking directly affects the construction progress. In recent years, impact rollers using triangular or pentagonal impact wheels have been used for broken pavement engineering in old pavement reconstruction. Because the cracked or broken cement concrete pavement blocks are relatively large (generally 3 to 6 meters square), and the plates have certain compressive strength and impact resistance, the impact roller usually needs to reciprocate many times to impact the old cement concrete pavement blocks. , it can be cracked or broken, which is time-consuming and labor-intensive. At the same time, the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/12
Inventor 贺杰余龙李志义
Owner 三明重工施工装备有限公司
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