" />As a new type of lightweight thermal insulation exterior wall material in China, rock wool board exterior wall insulation wall has unique structural fire resistance, high temperature air permeability, sound insulation characteristics and sound absorption. It has been successfully developed and promoted in the construction practice of building walls, indoor and outdoor wall insulation system engineering, and has gradually developed a relatively good and stable building insulation and heat preservation, fire prevention, sound insulation, noise reduction and heat insulation effect. Although rock wool board insulation has become a kind of thermal insulation material recognized at home and abroad with good thermal insulation performance, high-quality interior wall insulation material and external insulation decorative material, thermal insulation and heat insulation fireproof rock wool board products, compared with the production of ordinary and general refractory lightweight rock wool board products, have some completely different quality grade products of refractory safety production technical requirements, the reason is also the production of thermal insulation and heat insulation products. The requirements for thermal insulation and heat insulation refractory rock wool boards must be made of natural refractory rock powder, etc., as high-quality refractory raw materials, first through low-temperature melting, high-speed hot centrifugal sintering molding or filled with high-pressure energy-carrying gas and then vacuum jet blowing and cooling molding, and then through annealing "hammer" sintering and high-temperature "pleating" high-temperature annealing molding and other process flows, new technology and process materials can be made. In terms of material process and technical performance selection, the raw materials are first required to achieve compressive resistance that meets certain mechanical strength standards of their products. The melting point of rock wool board is above 10000℃. It is a lightweight non-returnable insulation material with a fireproof design grade of national Class II A and flame retardant standard. It has good flame retardancy and fire resistance. Even in severe fire conditions, it will basically not burn and cause excessive smoke and flames, which is conducive to quickly reducing the fire on the scene and its spread rate. It is currently a safe application and very useful building thermal insulation flame retardant insulation material.
On the outside of the wall structure, the insulation material is first fixed and installed on the material foundation, and then a layer of adhesive mortar is applied on the outer surface of the insulation material to firmly bond it to the glass fiber mesh for reinforcement and protection. From the above overall construction design process, the new technology of overall construction of rock wool board exterior wall includes mainly design and installation integrated technology, anti-cracking and anti-corrosion technology. The following article will focus on the detailed analysis and introduction of the main construction process characteristics and technical points of various specific stages.
1. Installation technology
① In the construction installation and construction installation practice projects, it is also necessary to have the ability to timely prepare the detailed construction design methods of various domestic and foreign standard building facades and the construction work organization technical plan of special construction technology for door and window installation design, and pop up the horizontal, vertical and direction control lines of various door and window openings on the indoor wall of the building, as well as the position lines of various door and window expansion joints, decorative seams, decorative strips, and special door and window brackets.
② Special attention should be paid to hanging the verticality reference line at the positive and negative corners of the building's exterior wall and all other necessary places. Each building floor should also hang the horizontal line of the elasticity from an appropriately high vertical position to achieve and control the verticality and flatness of the rock wool board as much as possible.
③ Use ink lines to pop up the control horizontal line at a position about 20mm above the splash water; above its bottom and at an appropriate position about 600mm from the upper edge of the splash water, chemical anti-corrosion and thermal insulation measures must be installed separately. After the special plastic steel bracket is sealed, various chemical waterproof, fireproof or thermal insulation and anti-corrosion performance effects should be used as much as possible on the bottom or the main parts below the bracket, and all lightweight and thermal insulation materials with good performance should be used for chemical fireproof and thermal insulation and anti-corrosion sealing.
2. Preparation of adhesives and plastering mortar
① Adhesives, plastering mortars, etc. are all single-stage two-component. When using mixing equipment, the raw materials of the materials and equipment provided should be strictly and reliably in accordance with the needs of the equipment material supplier. According to the requirements of the proportioning and adding method and the actual process requirements of the material production and production, the direct proportioning and adding method is to add water to the coherent powder tank cavity, and use an electric stirrer to stir and mix quickly until it is completely uniform, so as to achieve the uniform viscosity of the equipment materials required by the actual material engineering or production site.
② The amount of preparation used each time should not exceed once or too much. It should be used according to the calculated preparation specified in this product manual under different use seasons and ambient temperature conditions, and all preparations should be used up within the time limit.
3. Pre-impregnation and pasting of the wrapping net and rock wool board at the terminal of the insulation layer
① The terminal of the insulation layer at the door and window openings, parapets, structural deformation joints, system deformation joints, eaves, and plinths shall comply with relevant regulations. At least before pasting the rock wool board, a narrow width or 160-grade alkali-resistant mesh cloth for wrapping shall be pressed and pasted first. The area size of the rock wool board pressed in and the size height during wrapping shall be no less than or greater than 100m.
② Before pasting the rock wool board, special attention should be paid to carefully check whether the rock wool board surface material continues to be naturally dry after pasting, and whether the surface is naturally dry, flat, and clean after treatment; materials such as wet, rough and smooth surface, uneven smooth or flat surface, and rock wool board products with serious radioactive pollution and explosion hazards shall not be directly processed and used.
