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External wall plastering mortar and construction method thereof

A technology for plastering mortar and exterior walls, applied in the field of construction mortar, which can solve the problems of low construction efficiency, many consumables, and no energy saving, and achieve the effects of improving water retention performance, improving tensile strength, and solving high water absorption

Inactive Publication Date: 2010-04-28
SHENZHEN GRANDLAND DECORATION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of mechanized construction, due to the large proportion of existing external wall plastering mortar, many consumables, heavy vertical transportation burden, and no energy saving, it is easy to cause the mortar machine to block pumps, pipes, and guns, which hinders the smooth progress of mechanized construction. Low construction efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take each component according to the weight shown in Example 1 in Table 1, and the production process is as follows: ordinary Portland cement, slaked lime, light aggregate, heavy aggregate and C-type composite additive are mixed according to the above-mentioned specific gravity, and evenly mixed with a machine , Promptly obtain the exterior wall plastering mortar of embodiment 1, all can with paper bag packing or bulk.

[0042]Construction method: Take 100 kg of the external wall plastering mortar obtained in the above-mentioned embodiment 1, add 30 kg of water to dilute, stir mechanically or manually until the mixture is uniform, and reach a viscosity suitable for mechanical spraying or manual construction, then carry out mechanized spraying or manual work.

[0043] Perform performance testing according to national standards or industry standards (the testing basis for dry surface density is GB / T20473-2006, the testing basis for thermal conductivity and compressive stre...

Embodiment 2

[0045] With each component weight of embodiment 2 specified in table 1, repeat the production process described in embodiment 1 (only each component weight changes) obtain the exterior wall plastering mortar of embodiment 2; Repeat the construction method in embodiment 1 , Dilute with 100 kg of mortar and 40 kg of water, stir mechanically or manually until the mixture is uniform, and then carry out mechanized spraying or manual work. Perform performance testing with each standard described in Example 1, and the results are as shown in the corresponding data of Example 2 in Table 2.

Embodiment 3

[0047] With each component weight of embodiment 3 specified in table 1, repeat the production process described in embodiment 1 (only each component weight changes) obtain the exterior wall plastering mortar of embodiment 3; Repeat the construction method in embodiment 1 , Dilute with 100 kg of mortar and 50 kg of water, stir mechanically or manually until the mixture is uniform, and then carry out mechanized spraying or manual operation. Perform performance testing with each standard described in Example 1, and the results are as shown in the corresponding data of Example 3 in Table 2.

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PUM

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Abstract

The invention relates to an external wall plastering mortar which is mixed by the following components in portions by weight: 35-40 portions of Portland cement, 4-5 portions of white lime, 3-5 portions of light aggregate, 50-55 portions of heavy aggregate (common river sand) and 1.0 portion of C-type compound assistant, wherein the light aggregate is an inorganic vitrified hollow micropore material of which the fineness is lower than 100 meshes; the C-type compound assistant is sold by Guangzhou Hecheng Trading Company. The construction method comprises the following steps: adding water to dilute the external wall plastering mortar, wherein the water accounts for 30-50% of the external wall plastering mortar by weight; mechanically or manually stirring until the external wall plastering mortar is evenly mixed and reaches the viscosity which is suitable for mechanical spray finishing or manual construction; and carrying out mechanical spray finishing or manual construction. The external wall plastering mortar has the advantages of light weight, energy saving and high bonding strength. When being used with light-weight walls, the external wall plastering mortar can prevent bulging, cracking and peeling, effectively reduce mortar cracking and ensure the quality of constructional engineering. The external wall plastering mortar is suitable for all anti-cracking decoration engineering of internal and external surfaces of external walls, can insulate heat and reduce noise, is beneficial to mechanized constructions, and has the advantages of low unit-area building cost and simple technology.

Description

technical field [0001] The invention relates to a building mortar, in particular to an exterior wall plastering mortar and a construction method thereof. Background technique [0002] At present, new lightweight walls in construction projects, such as aerated concrete blocks, have a specific gravity of about 600-800Kg / m 3 , The thermal conductivity is 0.12-0.20W / (m·K 25℃). And existing external wall plastering mortar, its component and weight ratio are: ordinary Portland cement 18-25, slaked lime 0-5, limestone sand 60-75, additive 0.24-0.40; Proportion is about 1700-1800Kg / m 3 , not lightweight mortar, which does not match the elastic modulus of the lightweight wall, resulting in large deformation stress at the plastering interface, causing it to crack; the thermal conductivity of this existing external wall plastering mortar is 0.93W / (m·K25°C), the thermal conductivity of light-weight walls is very different, and it is easy to produce a "thermal bridge" effect, causin...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B22/06C04B14/06
Inventor 李少强张绮珊
Owner SHENZHEN GRANDLAND DECORATION GROUP
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