Construction method for preventing hollowing and cracking by using mountain sand cement mortar plastering

A technology of cement mortar and construction method, which is applied in construction, building structure, covering/lining and other directions, can solve the problems of irregular particle shape, high mud content, hollow sand plastering, etc., and achieves remarkable quality effect, The construction effect is obvious and the construction is simple.

Inactive Publication Date: 2017-10-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In Southwest China, due to the scarcity of river sand, the fine sand used in wall plastering construction is mostly natural mountain sand or machine-made mountain sand. Due to many reasons such as poor mountain sand gradation, slightly high mud content, and irregular particle shapes, etc. As a result, hollowing and cracking often occur in the mountain sand plastering construction in Guizhou, which increases the investment in repairs after completion and delivery
In order to improve the construction quality of mountain sand plastering and reduce the cost of repairing, those skilled in the art cannot solve this technical problem by spending a lot of time on practice and research on the basis of analyzing the causes of hollowing and cracking of plastering mortar. Therefore, how to pass It is necessary to improve the construction technology and develop a construction method of mountain sand cement mortar plastering anti-anti-drum and anti-cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1: Phase I of Guiyang Vanke Linglong Bay Project

[0056] The first phase project of Guiyang Vanke Linglong Bay is invested and constructed by Guiyang Vanke Jinyu Blue Bay Real Estate Co., Ltd. It is located on Shuidong Road, Yunyan District, Guiyang City. It consists of 7 high-rise residential buildings, multi-storey villas and underground garages It consists of a total construction area of ​​159,000 square meters. The high-rise residential buildings are all 34 floors above ground, with 2 floors of basement, the structure type is frame shear wall structure, and the building height is 99.8m. Using the mountain sand cement mortar plastering anti-aircraft drum and the cracking construction method of the present invention, the start time was May 11, 2012, and the completion time was November 2, 2015. So far, there has been no plastering quality repair problem.

Embodiment 2

[0057] Embodiment 2: Zhongtian Convention and Exhibition City TA-1, TA-2 (super high-rise) projects

[0058] Zhongtian Exhibition City TA-1 and TA-2 (super high-rise) projects are invested and constructed by Zhongtian City Investment Group Guiyang International Conference and Exhibition Center Co., Ltd., located in the northwest corner of Changling Road and Guanshan Road, Jinyang New District, Guiyang City, with convenient transportation around . The north and west sides of the site are adjacent to residential buildings in Area A. It consists of 2 super high-rise buildings, podium and underground garage, with 2 floors underground, 3 floors above the podium, and 43 / 44 floors in the tower. The total land area is 14380.41m2, the total construction area is 158553.63m2, and the total building height It is 200m, one of the towers is a hotel, and the other is an external office building, and the structure type is a frame shear wall structure. Using the mountain sand cement mortar p...

Embodiment 3

[0059] Example 3: Phase II of Guiyang Vanke Linglong Bay Project

[0060] Guiyang Vanke Linglong Bay Phase II Project is invested and constructed by Guiyang Vanke Golden Mile Blue Bay Real Estate Co., Ltd. It is located on Shuidong Road, Yunyan District, Guiyang City. It consists of 7 high-rise residential buildings and underground garages in buildings 8~14#, with a total construction area It is 122451.66 square meters. The high-rise residential buildings are all 34 floors above the ground, with 2 basements. The structure type is frame shear wall structure, and the building height is 99.8m. The floor height is 5.35m, and the floor height of the negative second floor is 3.6m. The maximum thickness of the basement floor is 180mm, and the highest height of the formwork support frame is 5.23m. Using the mountain sand cement mortar plastering anti-aircraft drum and the cracking construction method of the present invention, the start time was March 1, 2015. It is currently in the ...

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Abstract

The invention discloses a construction method for preventing hollowing and cracking by using mountain sand cement mortar plastering, namely adding a 1-2mm soft slurry layer between a plaster base layer and a ground floor mortar on the basis of common plaster mortar construction process; and at the same time, using a sawtooth type trowel to smear the ground mortar. The method comprises the steps of processing the base layer; making ash cakes; smearing plaster base layer and spraying water for moistening; scraping a soft slurry layer; smearing the ground mortar; maintaining the ground mortar; smearing the surface mortar; and maintaining the surface mortar. By adopting the construction method for preventing hollowing and cracking by using mountain sand cement mortar plastering, after knocking with a hollowing hammer for inspection, a metope of the same size almost has no hollowing; a few metope has 1-3 hollowing points and the hollowing area is relatively small; benefits in engineering quality, construction period and cost are good; plaster quality is guaranteed; repair risk and cost are reduced; and potential benefits are huge.

Description

technical field [0001] The invention relates to a mountain sand cement mortar plastering anti-aircraft drum and a cracking construction method, belonging to the technical field of construction engineering. Background technique [0002] In Southwest China, due to the scarcity of river sand, the fine sand used in wall plastering construction is mostly natural mountain sand or machine-made mountain sand. Due to many reasons such as poor mountain sand gradation, slightly high mud content, and irregular particle shapes, etc. As a result, hollowing and cracking often occur in the mountain sand plastering construction in Guizhou, which increases the investment in repairs after completion and delivery. In order to improve the construction quality of mountain sand plastering and reduce the cost of repairing, those skilled in the art cannot solve this technical problem by spending a lot of time on practice and research on the basis of analyzing the causes of hollowing and cracking of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F13/02E04F13/04E04F21/04C04B28/00
CPCC04B28/00E04F13/02E04F13/04E04F21/04C04B24/383
Inventor 袁新和邓召祥李证吉吕会超
Owner CCFED THE FIGTH CONSTR & ENG
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