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Wall plastering material selection method based on wall moisture damage assessment

A wet damage, wall technology, applied in the direction of covering/lining, construction, building construction, etc., can solve the problem of easy damage of wall plastering materials

Inactive Publication Date: 2016-10-12
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for selecting wall plastering materials based on wall wet damage assessment, to select suitable wall plastering materials for building envelopes under various complex environmental conditions, and to solve The problem of easily damaged plastering materials for walls of buildings and residential buildings

Method used

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  • Wall plastering material selection method based on wall moisture damage assessment
  • Wall plastering material selection method based on wall moisture damage assessment
  • Wall plastering material selection method based on wall moisture damage assessment

Examples

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specific Embodiment

[0040] This example takes the building enclosure structure in Nanchang as an example. A certain wall is a 240 brick wall, and the plastering material on the wall is 20mm cement mortar.

[0041] Get the performance parameters of the wall material and optionally the plastering material:

[0042] Wall thickness D 1 =240mm, thickness of cement mortar plastering layer D 2 =20mm, wall hygroscopicity S 1 =0.119(kg / kgdb), hygroscopicity S of cement mortar plastering layer 2 =0.173(kg / kg db), the evaporation rate e of the wall surface 1 =0.6(kg / ㎡), the evaporation rate e of the cement mortar plastering layer 2 = 0.3 (kg / ㎡).

[0043] Take February in Nanchang as an example:

[0044] Monthly average temperature T=6.8℃, monthly average relative humidity RH=80.6%, monthly average wind speed u=2.3m / s.

[0045] Calculation of water activity alpha w :

[0046] α w = R H 100 ...

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Abstract

The invention provides a wall plastering material selection method based on wall moisture damage assessment and belongs to the technical field of constructional engineering. According to the method, the problems of moisture absorption of a wall from the ground and heat and moisture transfer of the surface of the wall are mainly considered; a reasonable wall plastering material is selected by computing the moisture content of the wall and the plastering material; and the service life of the plastering material is prolonged, and the problem of resource waste is solved. By means of the method, damage to the wall plastering material due to heat and moisture transfer is relieved, and the service life of the plastering material is prolonged. The method is applicable to selection of plastering materials for residential buildings, public buildings and other buildings.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to a method for selecting performance indexes and parameters of walls and plastering materials under various environmental conditions. Background technique [0002] Since the 1970s, due to the global energy crisis, many countries have put forward strict requirements on the saving and service life of building materials. The State Council of China promulgated the "National Medium and Long-Term Science and Technology Development Plan 2006-2020", which mentioned building energy efficiency as one of the key areas and priority topics. In previous buildings, there was a lack of selection methods for plastering materials for building walls, resulting in the selection of plastering materials only based on the appearance of plastering materials, because the influence of moisture and heat-humidity coupling migration in the wall was not considered , leading to improper selection ...

Claims

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Application Information

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IPC IPC(8): E04F13/02
CPCE04F13/02
Inventor 郭兴国郭猛杨泽煊刘向伟
Owner NANCHANG UNIV