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Pouring concrete separating crack structure and construction method thereof

A construction method and separation joint technology, which is applied in the field of separation joints, can solve problems such as difficulty in leveling the concrete surface, easy leakage, irregular cracks in angular concrete, etc., and achieve the effect of eliminating cracks and reducing damage

Active Publication Date: 2007-11-28
HEBEI CONSTR GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the concrete surface on both sides of the separation joint is difficult to be smooth and the edges and corners are not damaged, and the irregular cracks appear after the concrete expands with heat and contracts with cold, and at the same time solve the problem that the roof rigid waterproof separation joint is easy to leak, the purpose of the present invention is to provide a A poured concrete separation joint structure, which is divided into blocks in the construction of rigid roof waterproof concrete and ground construction of fine stone concrete pouring in construction engineering, so as to eliminate the cracks on the roof and ground caused by thermal expansion and contraction of fine stone concrete and reduce damage to components

Method used

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  • Pouring concrete separating crack structure and construction method thereof

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Embodiment 1

[0014] Example 1: A large number of engineering practices have proved that the best implementation method for fine stone concrete ground is: use a width of 10mm to 20mm, a thickness equal to half the thickness of the ground, generally 30mm, and a bulk density of not less than 18kg / m 3 The polystyrene board 4 is used as the lower part of the separation joint; the upper part of the slat and the gap between the poured concrete on both sides are elastic asphalt sand 1, which is covered with a waterproof membrane 2, and the two sides of the waterproof membrane 2 are provided with sealing materials 3. The sealing material 3 is common asphalt.

[0015] The construction method of the separation joint structure is as follows: firstly, when constructing the fine stone concrete ground, the line is stretched according to the position of the predetermined separation joint, and then the plain cement mortar mixed with 3%-5% waterproof powder is used to inlay the 10mm-20mm wide aggregate Benz...

Embodiment 2

[0016] Embodiment 2: It has been proved by a large number of engineering practices that the best implementation method for rigid roofs is as follows: first set an isolation layer 5 on the roof waterproof layer 6, and use a 40mm wide fine stone on the isolation layer 5 with a thickness equal to that of the rigid layer. Half of the concrete thickness, generally 30mm, and the bulk density is not less than 18kg / m 3 The polystyrene board 4 is used as the lower part of the separation joint; the upper part of the slat and the gap between the poured concrete on both sides are elastic asphalt sand 1, which is covered with a waterproof membrane 2, and the two sides of the waterproof membrane 2 are provided with sealing materials 3. The sealing material 3 is common asphalt.

[0017] The construction method of the separation joint structure for rigid roofs is as follows: firstly stretch the thread on the fine stone concrete rigid roof according to the preset position of the separation joi...

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Abstract

The invention relates to a separation joint structure, comprising polystyrene plate located at the lower part and elaterite sand located at the upper part. Waterproof coiled material is covered above the elaterite sand and sealing material is coated between waterproof coiled material and fine stone concrete. In construction, according to the position of presetting separation joint wire is snapped. Plain cement puddle with 3%-5% of waterproof powder is used to mount the strip of polystyrene plate. When it is used on the ground the width of it is 10-20mm and when it is used on the roof surface. The thickness of strip is equal to the thickness of fine stone concrete. After the strip of polystyrene plate is mounted for 24 hours fine stone concrete is poured. After fine stone concrete is maintained for 7-10 days 20mm of the upper part in plate joint is shoveled by flat spade. Elaterite sand is mounted; then waterproof coiled material is pasted on tar sand; and then sealing material is coated between waterproof coiled material and fine stone concrete. The invention can eliminate cracks on the ground or on the roof surface generated by expand on heating and contract on cooling of fine stone concrete and decrease damage to the component. The purpose that the separation joint can not be cracked is achieved.

Description

technical field [0001] The invention relates to a separation joint, in particular to a cast concrete separation joint structure and a construction method thereof. Background technique [0002] At present, the rigid waterproof roof separation joints of construction projects are pre-embedded wooden slats, and the wooden slats are installed first and then concrete is poured; this traditional construction technology is difficult to guarantee the waterproof quality of the separation joints, and irregular cement structure layers at the separation joints are prone to occur Cracking and leakage; after the concrete is poured and reaches a certain strength, the wooden slats are difficult to be cleaned without destroying the concrete edges, resulting in secondary maintenance; the national standard "Roof Quality Acceptance Specification" (GB50207-2002), " The Code for Construction Quality Acceptance of Construction Engineering (GB50209-2002) clearly puts forward the requirements for set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/682E04D11/02
Inventor 王志义
Owner HEBEI CONSTR GRP CO LTD
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