Construction treatment method for building cracks

A construction method and construction technology, which can be applied to buildings, building structures, artificial islands, etc., can solve the problems of difficulty in plugging construction, seepage through cracks in the floor structure, and affecting the integrity of the structure, so as to achieve simple and easy construction technology and construction. The effect of low comprehensive cost and high construction efficiency

Active Publication Date: 2015-11-04
湖南省第五工程有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the national economy, a large number of high-rise and super high-rise buildings appear in various cities. These buildings generally have basements. A common problem is that cracks and water seepage often occur in the floor structure, which affects the integrity of the structure and reduces the The service life of the building is greatly affected, and the normal use of the building is seriously affected
Generally, the water level around the basement is relatively high, and the flowing water in the cracks in the bottom plate is pressure water. This pressure changes periodically with the alternation of flood season and dry season, which is easy to cause further development of cracks, and most cracks are from the bottom of the bottom plate. Starting from the bottom, the development process of cracks inside the bottom plate is very complicated, and the plugging construction is very difficult

Method used

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Examples

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Effect test

example 1

[0083] Example 1: Project of District G of Wenhua Road Commercial Pedestrian Street in a certain city, with a total construction area of ​​85548m2 2 , two floors underground, seventeen floors above the ground, and the second floor below the basement has a construction area of ​​14,700m 2 , The thickness of the negative second floor floor is 250mm. After the completion of the main project, cracks and water seepage appeared in different degrees on the 250mm thick floor of the basement. According to statistics, the total length of cracks in the entire negative second floor floor is 6000m, and the daily water seepage is about 30t. After the demonstration of the main units of all parties, it was decided to use the above method to deal with the cracks in the bottom plate. The crack treatment of the bottom slab of the project started in early April 2014 and was completed in mid-May 2014. After the treatment, the basement slab no longer leaked, and the concrete structure slab surfac...

example 2

[0084] Example 2: Project of District D of Wenhua Road Commercial Pedestrian Street in a certain city, with a total construction area of ​​22866m2 2 , 23 floors above the ground, one floor underground, and the building area of ​​the basement is 5350m2 2 , using a raft foundation, the thickness of the floor of the main building is 1m, and the thickness of the floor of the podium is 300mm. After the completion of the project, it was found that some water seepage cracks appeared on the 300mm thick bottom plate. According to the on-site statistics, the cracks were 580m long. After research by all parties, the main units decided to use the above method to treat the cracked part of the bottom plate of the project. After the treatment, the bottom plate no longer seeps , the surface of the structure is completely free of wet stains, and the water-stopping effect is good. The crack treatment of the bottom plate of the project started in early June 2014 and was completed in mid-June 20...

example 3

[0085] Example 3: Project of District A of Wenhua Road Commercial Pedestrian Street in a certain city, with a total construction area of ​​36,750m2 2 , one floor underground, twelve floors above the ground, using a raft foundation, the raft thickness of the main building part is 1m, and the floor thickness of the podium part is 300mm. The total length is 1800m according to the statistics. The main units of all parties decided to use the above method to treat the cracks in the bottom plate of the project. After the treatment, the bottom plate of the project has no leakage phenomenon, ensuring the normal use of the project. The project started in early July 2014 and was completed in late July 2014, saving a total of 417,800 yuan in construction costs. Saved 358,100 yuan in pumping costs during the use of the building.

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Abstract

The invention discloses a construction treatment method for building cracks. The construction treatment method comprises the steps that on-site crack checking and locating are conducted; a U-shaped groove is dug; rapid hardening micro expanding cement is adopted for sealing the U-shaped groove, and a grouting channel is formed in the bottom of the U-shaped groove; water feeding and gas tests are conducted; preliminary grouting and secondary grouting are conducted; surface dressing is conducted; and an epoxy emulsion mortar waterproof enhancement layer is made, and water is sprayed for wetting and maintenance. The construction treatment method has the beneficial effects that the construction technology is simple and easy to achieve, the construction is fast, the construction period is short, environmental protection and energy saving are achieved, the labor intensity of workers is small, the construction comprehensive cost is low, and the application range is wide.

Description

technical field [0001] The invention relates to a civil engineering construction method, in particular to a construction method for treating building cracks. Background technique [0002] With the rapid development of the national economy, a large number of high-rise and super high-rise buildings appear in various cities. These buildings generally have basements. A common problem is that cracks and water seepage often occur in the floor structure, which affects the integrity of the structure and reduces the The service life of the building is shortened, and the normal use of the building is seriously affected. Generally, the water level around the basement is relatively high, and the flowing water in the cracks in the bottom plate is pressure water. This pressure changes periodically with the alternation of flood season and dry season, which is easy to cause further development of cracks, and most cracks are from the bottom of the bottom plate. Starting from the bottom, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/16E04B1/682
Inventor 方永兴董范君颜昌明刘福云冯浩鲁滔
Owner 湖南省第五工程有限公司
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