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Construction method for spraying polymer mortar aiming at structural strengthening

A construction method and polymer technology, applied in building construction, building maintenance, construction, etc., can solve the problems of uneven thickness of mortar layer, fluctuation of construction quality, easy plugging of pipes, etc., and achieve unique construction advantages and feed material ratio The effect of constant and reducing labor intensity

Inactive Publication Date: 2011-06-22
上海维固工程实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many defects in manual plastering: when the thickness of the reinforced mortar layer is required to be more than 6cm, it is difficult to achieve compaction by manual plastering; artificial factors can easily lead to fluctuations in construction quality, and the thickness of the mortar layer is uneven; the plastering force is not easy to control, too large It is easy to cause segregation on the surface of the mortar, and if the force is too small, it is easy to separate; manual plastering is also easy to cause workers to mix materials on the working surface, which not only causes random changes in material ratios, but also easily causes ground pollution and waste of materials; The existence of wire mesh and steel mesh also brings difficulties to manual operation, and it is easy to form hollows behind the steel bars
The polymer mortar used for the structure is different from ordinary cement mortar or putty. It has the characteristics of high consistency, high viscosity, high wet density, high sand content, and large sand particles. difficult to apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] (1) Interface processing

[0029] Remove surface oil and loose parts of the structure to be reinforced. In order to facilitate the control of the thickness of the mortar layer, ash cakes are pre-made on the surface of the structure to be reinforced, and the distance between the ash cakes is not greater than 2m. Bind the steel strand mesh or steel mesh outside the structure to be reinforced according to the design requirements. In order to ensure a good combination of the structure interface and the interface agent, it is best to spray water on the structure to be reinforced 24 hours in advance to ensure that the surface of the structure to be reinforced is wet without clear water before spraying construction.

[0030] (2) Interface agent injection

[0031] Use an air hammer to manually mix the cement-based interface agent containing polyacrylate with water, connect the spray gun to the air compressor, and use the spray gun to spray the interface agent onto the base su...

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PUM

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Abstract

The invention discloses a construction method for spraying polymer mortar aiming at structural strengthening. The construction method comprises the following steps: 1. cleaning the surface needing structural strengthening, and constructing steel wire meshes or steel bar meshes; 2. spraying interfacial agent onto the base surface needing structural strengthening by a bomb-spraying gun; 3. connecting a mortar sprayer with an air compressor, and spraying the polymer mortar onto the base surface by the compressed air; 4. spraying the polymer mortar layer by layer, wherein, the steel wire meshes or the steel bar meshes need to be substantially covered in a first layer, and the following layer is to be sprayed until the polymer mortar in the first layer is initially set; and carrying out the sub-region line production at the interval of the initial setting time; and 5. leveling the surface of the mortar layer by using a ruler until the sprayed mortar reaches the design thickness, and further floating and finishing by a trowel dipped in water. The invention has the advantages that the thickness of the mortar layer reaches 10cm, the formation is dense, and the polymer mortar is securely bonded with the base layer, the steel wires and the steel bars; and the invention avoids the problems easily caused by manual operations, concerning the quality of the mortar layer, such as, hollowness, layering, segregation, dropping off, non-uniform thickness and the like.

Description

technical field [0001] The invention discloses a building construction method, which is especially suitable for the construction of a polymer mortar layer in a structure enlarged section method. Background technique [0002] In the reinforcement technology of enlarged section method, the construction method of formwork grouting was usually used in the past. The formwork grouting method needs to build a formwork construction link, which has a long construction period and high formwork cost; the enlarged surface layer is usually relatively thin and the steel bars are dense, which requires high construction performance of the grouting material, so the material price is also high, and the forming quality is not easy to control. The use of steel strand mesh (reinforced mesh)-polymer mortar reinforcement technology does not require support formwork, the construction speed is fast, and the construction performance requirements of materials are not high. It is a new type of reinforc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02
Inventor 陈明中黄坤耀李静张彬
Owner 上海维固工程实业有限公司
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