Cold-formed thin-walled steel composite gypsum mortar insulation board external wall structure and application

Abstract

The invention discloses a cold-formed thin-walled steel composite gypsum mortar insulation board external wall structure. The cold-formed thin-walled steel composite gypsum mortar insulation board external wall structure is composed of cold-formed thin-walled steel, steel wire mesh, wall body spray mortar layers, an insulation board, polymer waterproof anti-crack mortar and anti-corrosion mesh. The cold-formed thin-walled steel is arranged and fixed according to structural design requirements, the steel wire mesh is installed on one side or both sides of the cold-formed thin-walled steel, andthe insulation board is installed between the spaces enclosed by the section steel. The wall body spray mortar layers are sprayed on both sides of the section steel, and gaps among the section steel,the insulation board and the steel wire mesh are filled, wrapped, covered and leveled to form a uniform wall body spraying mortar layer material surface layer. The steel wire mesh is arranged in the wall body spray mortar layer surface layer, wherein the steel wire mesh is not installed on the inner side of the wall body spray mortar layer surface layer. According to the cold-formed thin-walled steel composite gypsum mortar insulation board external wall structure, the overall performance of a system is good, a wall body is full but not empty, and the two "pain points" of "hollow wall" and "wall cracking" of light steel residence are perfectly solved.

Description

technical field [0001] The invention relates to the technical field of cold-formed thin-walled steel building construction, in particular to the construction and application of cold-formed thin-walled steel composite gypsum mortar insulation boards for external walls. Background technique [0002] 1. There are deficiencies in the wall structure of modern low-rise cold-formed thin-walled steel buildings [0003] The walls of modern low-rise cold-formed thin-walled steel buildings are composed of cold-formed thin-walled steel skeletons, wall structural panels (cement boards, gypsum boards, silicon-calcium boards, and OSB boards, etc.), and the inner cavity is filled with fireproof insulation cotton or hard It is a compound composed of foamed polyurethane and other materials connected by screws. [0004] Compared with traditional building block walls, this kind of wall has great advantages in construction, transportation, earthquake resistance, energy saving, etc., but it also...

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Problems solved by technology

[0005] 1. The middle of the cold-formed thin-walled steel enclosure wall is basically a hollow structure, which is easy to form a "tympanic membrane" effect, and the impact sound insulation effect is poor, and the "hollow wall" structure of the steel structure enclosure wall covered with plates on both sides It is difficult for Chinese people who are used to the solid wall of "Qin bricks and Han tiles" to accept

[0006] 2. The seams of the exterior wall panels are prone to cracking due to temperature changes, resulting in quality problems such as water seepage and paint film bubbling on the exterior walls, affecting decoration and use effects

[0007] 3. The quality of fireproof insulation cotton is different. Poor quality fireproof insulation cotton will disperse tiny, almost invisible fibers that float in the air for a long time. After being inhaled by the human body, they will gradually deposit in the lungs and cause various diseases. ; while rigid foamed polyurethane has poor fire resistance and can continuously volatilize harmful substances to the human body

[0008] 2. Low utilization rate of industrial by-product gypsum, especially phosphogypsum

[0010] The storage of phosphogypsum waste slag occupies a large amount of land; the acid and other harmful substances contained in it are likely to pollute the surrounding environment, which is contrary to the basic national policy of environmental protection in our country! If the application and disposal are not increased, the development of the phosphate fertilizer industry will be greatly affected

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