Method for slitting cement concrete pavement

A technology of cement concrete and cutting seam, applied in the direction of roads, roads, pavement details, etc., to achieve the effect of neat cutting seams without burrs and fully releasing internal stress

Active Publication Date: 2017-07-04
CCCC THIRD HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional shrinkage joints are slits cut by a slitting machine, but the slits cannot maximize their effect due to the presence of steel bars in the road surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a cement concrete pavement slit method, which comprises the following steps:

[0026] step one

[0027] First divide the slit grid according to the cement concrete pavement to be slit, and mark the slit grid on the cement concrete pavement to be slit;

[0028] step two

[0029] After the concrete pavement to be cut is solidified for 25 hours, the first cutting is carried out, and the cutting depth for the first time is one-third of the thickness of the cement concrete pavement to be cut;

[0030] Carry out secondary cutting after 7h, the depth of secondary cutting is 1 / 4th of the thickness of described cement concrete pavement to be cut;

[0031] Cut three times after 2h, and the depth of three cuts is 1 / 6th of the thickness of the cement concrete pavement to be cut;

[0032] step three

[0033] Fill the slits with filler.

[0034] In the described cement concrete pavement slit method,

[0035] The width of the first cut is greater than the ...

Embodiment 2

[0043] The invention provides a cement concrete pavement slit method, which comprises the following steps:

[0044] step one

[0045] First divide the slit grid according to the cement concrete pavement to be slit, and mark the slit grid on the cement concrete pavement to be slit;

[0046] step two

[0047] The first cutting is carried out after the concrete pavement to be cut is solidified for 25h-38h, and the first cutting depth is one-third of the thickness of the cement concrete pavement to be cut;

[0048] Carry out secondary cutting after 10h, the depth of secondary cutting is 1 / 4th of the thickness of described cement concrete pavement to be cut;

[0049] Carry out three cuts after 3h, and the depth of three cuts is one-sixth of the thickness of the cement concrete pavement to be cut;

[0050] step three

[0051] Fill the slits with filler.

[0052] In the described cement concrete pavement slit method,

[0053] The width of the first cut is greater than the width...

Embodiment 3

[0061] The invention provides a cement concrete pavement slit method, which comprises the following steps:

[0062] step one

[0063] First divide the slit grid according to the cement concrete pavement to be slit, and mark the slit grid on the cement concrete pavement to be slit;

[0064] step two

[0065] The concrete pavement to be cut is solidified for the first time after 29 hours, and the first cutting depth is one-third of the thickness of the cement concrete pavement to be cut;

[0066] Carry out secondary cutting after 8h, the depth of secondary cutting is 1 / 4th of the thickness of described cement concrete pavement to be cut;

[0067] Carry out three cuts after 2h, and the depth of three cuts is one-sixth of the thickness of the cement concrete pavement to be cut;

[0068] step three

[0069] Fill the slits with filler.

[0070] In the described cement concrete pavement slit method,

[0071] The width of the first cut is greater than the width of the second cut...

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PUM

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Abstract

The invention provides a method for slitting a cement concrete pavement. Slitting is phased, so that the interior of the cement concrete pavement is sufficiently cooled and solidified. Slits are neat with no rough edges and the internal stress can be sufficiently released without extra cracks.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a method for cutting a cement concrete pavement. Background technique [0002] Cement concrete pavement refers to the pavement with concrete as the main material, referred to as concrete pavement, which is a kind of high-grade pavement. However, concrete is shrinkable, and surface cracks will appear on the road surface due to shrinkage. How to control surface cracks is a major problem in concrete pavement. The conventional method is to set shrinkage joints. Conventional shrinkage joints are slits cut by a slitting machine, but the slits cannot maximize their effect due to the presence of steel bars in the road surface. Contents of the invention [0003] In order to solve the above problems, the invention provides a cement concrete pavement slit method, which comprises the following steps: [0004] step one [0005] First divide the slit grid according to the cement co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C11/06
CPCE01C11/06
Inventor 张爱民卢明智张本元樊占东张志宇
Owner CCCC THIRD HIGHWAY ENG
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