1. The influence of stress on the outer wall thermal insulation system of rock wool is divided into three stages: about 24 hours after painting, the material elasticity is relatively large, and the stress is not large; after several months, the deformation is large, and the shrinkage is serious. There were some building fall-off accidents in the days. In the final analysis, the construction steps were out of order. Let the Shandong cold storage installation manufacturers popularize the correct steps for construction:
1. The influence of stress on the outer wall thermal insulation system of rock wool is divided into three stages: about 24 hours after painting, the material elasticity is relatively large and the stress is not large; after several months, the deformation is large and the shrinkage is serious; in the use stage, several years After that, the stress is relatively stable. Taking into account the above situation, the temperature of the base and ambient air should not be lower than 5 °C during the construction of the external thermal insulation project and within 24 hours of completion. In the summer, the sun should be avoided. After the rock wool board is installed on the wall, the surface should be leveled in time. It is not allowed to be constructed in windy weather and rainy days above level 5. Rain protection measures should be taken during rain.
In addition, the compressive strength of the mortar is much larger than the tensile strength thereof. It is a very accidental situation that the crack is damaged by the pressure. Therefore, the crack damage caused by the tensile stress parallel to the surface is generally considered in the construction. In order to avoid excessive concentration of tensile stress, no gaps of more than 2 mm are allowed between the rock wool boards during the laying process of the rock wool board. The joints of the boards should be split into a "T" shape and "wrong" in the yin and yang angles. Shandong cold storage price
There is also a need to specifically mention the external insulation construction of the door and window openings. On the façade of the building, the presence of the door and window openings naturally divides the façade into horizontal and vertical small pieces, which causes stress concentration, especially at the corners of the window. Cracks are easily generated at these stress concentrations and continue to Extend and widen. In the past, the general practice was to use a steel wire mesh to seal the edge of the rock wool board at these locations, and a layer of steel mesh should be added to the rock wool board around the corner of the window to increase the ability to resist stress concentration. Now some companies have developed mature products, such as prefabricated sealing tapes, door and window connecting lines, etc., which can be more convenient for construction and better solve the problem of concentrated stress on the door and window openings. In addition, before the large-area fiberglass mesh is strengthened at the four corners of the window hole and the door hole, it must be reinforced with a 45° oblique glass fiber mesh cloth, and the oblique reinforcing mesh cloth is buried in the plastering mortar. Small cold storage price
2. The rock wool insulation layer fixing method and the anchor rock wool insulation layer are attached to the structural layer through the adhesive and the connecting member. The adhesive is applied on the rock wool board by means of sticking and sticking. The bonding area between the rock wool board and the wall is not less than 40% of the area of ​​the rock wool board. The connecting piece has to be connected reliably, can withstand the weight of the insulation layer, and can resist falling off under the action of external force, and has certain durability.
In the choice of anchor, it is generally required that the anchor has a broken bridge design to prevent the heat bridge from being generated. The effective anchoring depth should be greater than 35mm, the anchor disc diameter should be greater than 50mm, and the single anchor bolt tensile bearing capacity is greater than 0.3kN, per square In principle, the wall surface should not be less than 3 anchors (the actual 3 can not achieve the effect). In practical applications, the choice and number of anchors should also consider the following factors: the weight of the insulation layer and its protective layer; the shrinkage stress bearing; the effect of deformation; the fatigue failure performance and corrosion resistance of the anchor; the wind load to withstand . The disc does not protrude from the insulation panel during installation and requires anchors to pass through the fiberglass mesh. At the edge of the facade, an additional anchor is required. Built cold storage price
This article is provided by Shandong Dingsheng Refrigeration Equipment Co., Ltd.! If you have any enquiries, please pay attention to the WeChat public account "Dingsheng Refrigeration" or call 15725158383! ! !
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Product parameters
Model: KN95
Style: ear - mounted
Breathing valve: none
Filter level: KN95
Color: white
Activated carbon: none
Execution standard: GB2626-2006
Certification: CE FDA EUA
Packing specification: 50 pieces/box 1200 pieces/carton
Material composition:
The outer layer is 50g non-woven fabric, the second layer is 40g hot-air cotton, the third and fourth layer is 25g non-woven fabric, and the inner layer is 25g non-woven fabric.
KN95 MASK
Zhejiang G&P New Energy Technology Co.,Ltd , https://www.solarpanelgp.com