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Rock wool board external wall insulation wall, as a new type of light-weight insulation new external wall material in China, has unique structural fire resistance, high-temperature air permeability, sound insulation characteristics and sound absorption. It has been gradually successfully developed and promoted in the construction practice of building walls, indoor and outdoor external wall insulation system engineering, and applied and gradually has relatively good and stable building thermal insulation and insulation, fireproof sound insulation noise reduction insulation effects. Although currently rock wool board insulation has become a recognized insulation material with good thermal insulation performance at home and abroad, high-quality internal wall insulation material and external insulation insulation decoration material, thermal insulation type fireproof rock wool board products, compared with the production of ordinary and general refractory light-weight rock wool board products, have other completely different quality grade products of refractory safety production technical requirements. The reason is also that the requirements for producing insulation and thermal insulation products require insulation and thermal insulation refractory rock wool boards to use natural refractory rock powder etc. as high-quality refractory raw materials, first through low-temperature melting, high-speed thermal centrifugation for sintering molding or filled with high-pressure energy-carrying gas then vacuum jet blowing then cooling molding, then first through annealing "hammer" sintering and high-temperature "pleating" high-temperature annealing molding and other process flows, new technology process materials can be made. On the issue of material process technology performance selection, first require its raw materials to meet the compressive strength of a certain mechanical strength standard for its products. The melting points of rock wool boards are all above 1000°C, belonging to fire protection design grades all national second-level A grade, flame retardant standard light-weight non-reignition insulation material, with good flame retardant fire resistance, even under severe fire conditions basically will not burn causing excessive smoke, flame, conducive to quickly reducing the on-site fire and its spread and diffusion speed, is currently a building insulation flame retardant insulation material with very good safe application effect.
On the outside of the wall structure, first fix and install the insulation material on the material base, then apply a layer of bonding mortar on the outer surface of the insulation material to firmly bond to the glass fiber mesh, used as reinforcement and protection. From the above overall construction design process, the new technology of rock wool board external wall overall construction, mainly includes design and installation integration technology, anti-crack anti-corrosion technology. Below this article will focus on detailed explanation and analysis of the main construction process characteristics and technical points of various specific stages.
1. Installation technology
① In the practice of building installation and construction installation engineering, should also have the ability to timely compile methods according to various standard building facade detail construction designs at home and abroad, and the construction operation organization technical plan of door and window installation design special construction technology, pop out horizontal, vertical and direction control lines of various door and window openings on the building interior wall, as well as various door and window expansion joint position lines, decorative seam lines, decorative strip lines, special door and window bracket position lines, etc.
② Special attention should be paid to hanging vertical reference lines at the external corners, internal corners of building external walls and all other necessary places. Each building floor should also hang a horizontal line of elasticity from an appropriate high vertical position, to try to achieve and control the verticality and flatness on the rock wool board surface.
③ Pop out the control horizontal line with ink line at a position about 20mm above the apron; at an appropriate position about 600mm above the bottom from the upper edge of the apron, special plastic steel brackets that have been treated with chemical anti-corrosion and insulation measures must be installed respectively. After sealing, the main parts on or below the bracket should also simultaneously adopt various chemical waterproof, fireproof or insulation anti-corrosion performance effects as much as possible, all use good light-weight and insulation type materials etc., for chemical fireproof and insulation anti-corrosion sealing treatment.
2. Preparation of adhesives and plastering mortar
① Adhesives, plastering mortar etc. are all single-stage two-component. When using mixing equipment, should first strictly and reliably according to the needs of the equipment material supplier, provide the raw materials of the material equipment. Use the required ratio adding method and according to the material production and actual process requirements, directly ratio adding method add water in the relevant powder tank cavity, use an electric mixer to quickly stir and mix until completely uniform, reaching the uniform viscosity required by the actual material engineering or production site equipment material.
② The preparation amount used each time should not exceed one time or too much, depending on the different use season environmental temperature conditions, according to the preparation use calculated as already specified in this product manual, all prepared and used up within the time limit.
3. Pre-impregnated pasting wrapping mesh at the terminal part of the insulation layer, pasting rock wool board
① The terminal parts of the insulation layer at door and window openings, parapet walls, structural deformation joints, system deformation joints, eaves, plinths etc. must according to relevant regulations, at least before pasting rock wool board, first press and paste narrow or 160-width alkali-resistant mesh cloth for wrapping. The area size of rock wool board pressed in and the size height during wrapping both require no less than or wider than 100m.
② Before pasting the rock wool board surface, special attention should be paid to first carefully check whether the pasted rock wool board surface material continues to maintain natural drying, whether the surface treated is naturally dry and flat, clean and good; damp, surface rough smooth and uneven smooth or flat, rock wool board products with serious radioactive pollution explosion hazards etc. substances must not be directly processed and used.
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