Detection and evaluation method of crack condition on external insulating layer of thin-plastered outer wall

Abstract

The invention discloses a detection and evaluation method of crack condition on an external insulating layer of a thin-plastered outer wall, comprising the following steps: step 1: confirming the weather conditions of the detection day and the two days before the detection; step 2: performing the humidifying treatment to the crack to be detected, and shielding the crack to be detected from the sunlight to prevent the direct sunlight; step 3: determining the data of the next detection according to the temperature of the day; step 4: removing the shielding measures when the detection day comes,measuring the distance and the resistance value between two random points of the crack for several times along the length direction of the crack to be detected to obtain the resistance value between two points of the crack, and judging the condition of the crack to be detected. The invention provides the detection and evaluation method of crack condition on the external insulating layer of the thin-plastered outer wall, and the operator can judges the types and the hazard of the crack according to the comparison of the resistance value of the crack. The detection process is simple and convenient, and the method can be widely used in the field detection of the external protection structure of the energy saving building.

Description

technical field [0001] The invention relates to on-site detection of building energy-saving enclosure structures, in particular to cracks in thin plastered external thermal insulation walls. Background technique [0002] Since the 1980s, my country's construction industry has achieved rapid development. However, due to the late start of my country's building energy conservation, the comfort and energy-saving effect of residential buildings do not meet the growing quality of life requirements of residents. The direct result is a large amount of energy waste. . With the development of the global industrialization process, the worldwide energy crisis is inevitable, and building energy conservation has become the consensus of mankind. In recent years, under the impetus of national energy-saving policies and technical standards, my country's building energy-saving technology, especially wall insulation technology, has developed rapidly. In China, there have been a variety of exte...

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Problems solved by technology

[0002] Since the 1980s, my country's construction industry has achieved rapid development. However, due to the late start of my country's building energy conservation, the comfort and energy-saving effects of residential buildings do not meet the growing quality of life requirements of residents. The direct result is a large amount of energy waste.

But so far, there are almost no methods for detecting and judging the hazards of cracks suitable for thin plastered external thermal insulation walls. The reading magnifying glass used on building structures can only simply test the width parameters of cracks, but cannot measure the crack depth. Big

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