CN108385862A - A kind of gypsum insulation mortar interior wall combined wall and its application - Google Patents

Abstract

The invention discloses a composite wall of gypsum thermal insulation mortar inner wall, which comprises shaped steel, steel mesh, a first wall sprayed mortar layer, a second wall sprayed mortar layer and a gypsum thermal insulating mortar layer; the middle of the shaped steel, Steel mesh is installed on one side or both sides and fixed to the beam-column structure, set inside the gypsum insulation mortar layer, the first wall spray mortar layer, and the second wall spray mortar layer, and the steel mesh, gypsum The thermal insulation mortar and the wall sprayed mortar form an integrated structure; the gypsum thermal insulation mortar layer is sprayed on the steel mesh, and is covered and protected by the first wall sprayed mortar layer on the inner side and the second wall sprayed mortar layer on the outer side . The gypsum thermal insulation mortar interior wall composite wall is all prefabricated in the factory and delivered to the site for installation. It can also be prefabricated in the factory and delivered to the site for installation. It is seamlessly connected with other structures without hollowing, cracking, and more Energy saving, fast and efficient construction, light wall, energy saving, fire prevention, earthquake resistance, sound insulation, humidity control, it is a subversion and innovation of traditional enclosure structures such as masonry and wall panels.

Description

A kind of gypsum thermal insulation mortar interior wall composite wall and its application

technical field

The invention relates to the field of enclosure structures of house construction technology, in particular to a gypsum thermal insulation mortar inner wall composite wall, the structure can be constructed by dry methods on site, and can also be installed on site with prefabricated panels in the factory.

Background technique

1. Traditional interior wall enclosure structure system

Traditional interior wall enclosure structures including steel structures, concrete structures, and wood structures are all self-supporting walls made of masonry.

Masonry (brick-concrete structure) is a wall or column made of blocks and mortar, including brick masonry, block masonry, stone masonry and wall panel masonry. In general engineering construction, masonry It accounts for about 1/2 of the weight of the entire building, and accounts for about 1/3 of the labor and cost. It is an important material for construction projects.

The disadvantages of masonry construction are:

1. The strength of the masonry is low, the cross-sectional size of the components is large, the amount of materials is large, and the weight is heavy.

2. The masonry is built by hand, and the construction labor is heavy.

3. The tensile strength, flexural strength and shear strength of the masonry are very low, so the earthquake resistance is poor, and the damage is heavy when it is subjected to an earthquake.

2. Modern prefabricated self-supporting interior wall panel system

It is assembled from prefabricated large wall panels (boards), also known as large slab buildings. It is the main type of fully prefabricated buildings in industrialized system buildings. Panel construction can reduce structural weight, improve labor productivity, expand the usable area and earthquake resistance of the building. The key issue of large-slab buildings is joint design, which should ensure the integrity of component connections in structure (the connection methods between plates mainly include welding, bolt connection and integral connection of post-cast concrete).

The main disadvantages of slab construction are:

1. There are greater constraints on the shape and layout of buildings;

2. The dimensional accuracy is extremely high and the adaptability is poor; it is easy to produce production problems such as missing edges and corners, uneven edges and corners, uneven warping, and flying out of convex ribs;

3. During the transportation and hoisting process, the surface of the board often cracks or even breaks;

4. It is easy to cause blockage, falling off, position deviation of pre-buried pipelines, obstacles when threading on the construction site, etc.;

5. The cost of materials for production and installation is high;

6. Transportation is difficult and transportation costs are high.

3. Low utilization rate of industrial by-product gypsum, especially phosphogypsum

The annual production of industrial by-product gypsum in my country is about 184 million tons, of which 70 million tons of phosphogypsum are newly added every year; the cumulative stockpiling of phosphogypsum exceeds 300 million, and the utilization rate is less than 20%, most of which are discarded as waste.

The storage of phosphogypsum waste slag occupies a large amount of land; the acid and other harmful substances contained in it are likely to cause pollution to the surrounding environment. If the application and disposal are not increased, the development of the phosphate fertilizer industry will be greatly affected.

At present, industrial by-products such as phosphogypsum gypsum are mainly used in cement retarders, paper-faced gypsum boards and gypsum hollow blocks, and the consumption tends to be saturated, so other application directions must be expanded.

Contents of the invention

The object of the present invention is to provide a kind of gypsum thermal insulation mortar interior wall composite wall body, to solve the problem that proposes in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A composite wall of gypsum thermal insulation mortar interior wall, comprising profiled steel, steel mesh, first wall sprayed mortar layer, second wall sprayed mortar layer and gypsum thermal insulation mortar layer; steel mesh is installed on both sides of the profiled steel And fixed with the beam-column structure, it is set inside the gypsum thermal insulation mortar layer, the first wall spray mortar layer, and the second wall spray mortar layer, and the section steel, steel mesh, gypsum thermal insulation mortar, and wall spray mortar The gypsum insulation mortar layer is sprayed on the steel mesh, and is covered and protected by the first wall sprayed mortar layer on the inside and the second wall sprayed mortar layer on the outside.

The steel mesh can also be replaced by a reinforced mesh, which is buried in the sprayed mortar layer of the wall on the side where the steel mesh is not installed as required; the reinforced mesh includes: glass fiber mesh cloth (common, medium-alkali or alkali-resistant), yarn Mesh, fine wire mesh, etc.

This scheme uses section steel + steel wire mesh as the skeleton, and forms a whole with structural beams and columns through the connection of section steel and steel structure, concrete structure, and wooden structure; the wall is sprayed with mortar and gypsum insulation mortar, which has light , non-combustible, sound insulation, and heat insulation are flexible materials, and the continuous spraying method is used to ensure that the wall has no gaps. At the same time, the materials used are all prefabricated in the factory and delivered to the site for installation. The wall spraying mortar is constructed with special equipment. The site only needs to be connected to water and electricity to complete the process from powder to slurry to spraying. A series of actions of the wall, the site is clean and neat, no waste and no garbage (only packaging bags can be recycled), which is in line with the prefabricated dry construction method.

This scheme is easy to operate, quick to construct, and low in price, and can solve the problems of light weight, fire prevention, crack resistance, sound insulation, energy saving, and construction of the self-supporting wall at one time. After testing, the fire resistance limit of this wall structure exceeds three hours, the sound insulation is ≥45dB, and the heat transfer coefficient is ≤1.3W/(m ² .k).

As a preferred technical solution of the present invention, its construction sequence is characterized in that: install profiled steel and fix it with beams and columns → install steel mesh on the inside and outside of profiled steel (the inner side is hot-dip galvanized steel mesh, and the outer side is a ribbed expansion net) → from the inside Spray gypsum insulation mortar to the outer reinforced steel wire mesh → punch the walls on the inner and outer sides → spray the mortar on the inner and outer walls and scrape it flat.

As a preferred technical solution of the present invention, the section steel is anti-corrosion treated 30*30*1.2mm U-section steel, installed with a vertical spacing of 600mm and a horizontal spacing of 1000mm, and is fixed to beams and columns.

As a further preferred solution of the present invention, the outer ribbed expanded mesh has a specification of 4.5*15*0.6mm; the inner hot-dip galvanized steel mesh has a mesh aperture of 10*10*0.6mm.

As a preferred technical solution of the present invention, the wall sprayed mortar is used on both sides of the wall, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

As a preferred technical solution of the present invention, the gypsum thermal insulation mortar is used in the middle of the wall, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤500 ≥0.4 ≤0.10 A

As a preferred version of the present invention, the reinforcing net is coated with medium-alkali glass fiber mesh cloth, and its technical index is:

As a preferred technical solution of the present invention, the wall sprayed mortar and gypsum insulation mortar layer should be sprayed layer by layer, and the thickness of each spray should be no more than 50mm; the wall sprayed mortar should be completely dry before polymer waterproofing and anti-corrosion. Cracked mortar construction.

Beneficial effect

Compared with traditional masonry walls and modern prefabricated large slabs, this new type of interior wall sprayed structure has good overall performance of the system, good earthquake resistance, light and dense walls, sound insulation, heat insulation, fire prevention, and comfort. , The construction is simple and fast, and the construction environment is clean and tidy. At the same time, a large amount of industrial by-product gypsum such as phosphogypsum is consumed, turning waste into treasure, and solving two "pain points" in the market in one fell swoop.

1. Factory prefabrication, on-site mechanized construction, no garbage, fast construction speed, high quality and low price. The materials involved in the wall structure of the present invention include shaped steel, steel mesh, wall sprayed mortar, and reinforcement mesh. All are produced by the factory and transported to the site for installation, in line with the industrial policy of "assembled buildings" advocated by the state, which solves the problems of heavy traditional masonry materials, poor seismic performance, slow construction speed, high price of prefabricated slabs, difficult transportation, and installation problems. Not easy to wait for the problem.

2. The material used in the wall structure of the present invention is single in specification, easy to organize, fast in construction speed, less in use, controllable in material quality and construction quality, and the site is civilized, clean and hygienic without garbage. All the materials used are prefabricated in the factory, mixed uniformly, packed in bags and delivered to the site, and sprayed with special equipment. During construction, only electricity and water need to be connected to the machine, which fully meets the requirements of dry work.

3. The raw materials used in the wall spraying mortar and gypsum thermal insulation mortar of the present invention are industrial solid waste phosphogypsum or other by-product gypsum, which can completely absorb the newly added waste slag every year and the original piled waste slag, turning waste into treasure in one fell swoop Solve the environmental protection pressure of by-product gypsum enterprises such as phosphate fertilizer plants and the environmental protection pressure of local governments.

4. The wall structure of the present invention replaces traditional masonry materials, which can reduce the dependence of blocks on laterite, cement, etc. on natural resources and high energy-consuming materials, and contribute to the protection of green mountains and green waters.

5. The wall structure of the present invention has excellent properties such as light weight, non-combustibility, sound insulation, heat insulation, and moisture absorption, and can meet residential requirements such as fire prevention, energy saving, sound insulation, and comfort.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Figure 2 is a side view of the present invention.

In the figure: 1-shaped steel, 2-steel mesh, 3-the first wall sprayed mortar layer, 4-the second wall sprayed mortar layer, 5-gypsum insulation mortar layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

See also three kinds of embodiments that the present invention provides of Fig. 1-2:

Embodiment one

A composite wall with gypsum thermal insulation mortar for interior walls, with a thickness of 120mm, including 60mm gypsum thermal insulation mortar and 30mm wall sprayed mortar, and the heat transfer coefficient of the wall is 1.08 [W/m2.K]. A sprayed mortar layer for the first wall, a sprayed mortar layer for the second wall, and a gypsum thermal insulation mortar layer; steel mesh is installed on both sides of the section steel and fixed to the beam and column structure, and is arranged on the gypsum thermal insulation mortar layer, the first wall Spraying the mortar layer and the inside of the second wall spraying mortar layer, and forming an integrated structure between the section steel, steel mesh, gypsum thermal insulation mortar, and wall spraying mortar; the gypsum thermal insulation mortar layer is sprayed on the steel mesh, It is covered and protected by the sprayed mortar layer of the first wall on the inside and the sprayed mortar layer on the second wall on the outside.

The construction sequence is characterized by: installing profiled steel and fixing it with beams and columns → installing ribbed expansion mesh on the outside of the profiled steel, installing hot-dip galvanized steel wire mesh on the inside of the profiled steel → punching ribs on both inner and outer walls → expanding from the inside to the outside with ribs Spray the gypsum insulation mortar in layers → spray the mortar on the outer wall from the outside to the inside and scrape it evenly with the punching ribs.

The profiled steel is C-shaped steel with a specification of 30*30*1.2, which is arranged and welded according to vertical 600mm and horizontal 1000mm intervals and connected with the beam-column structure.

The specification of the expanded mesh with ribs is 4.5*15*0.6mm, and the mesh aperture of the hot-dip galvanized steel mesh is 10*10*0.6mm.

The wall spraying mortar thickness is 30mm each, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The gypsum thermal insulation mortar is used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤500 ≥0.4 ≤0.10 A

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

Embodiment two

A gypsum thermal insulation mortar interior wall composite wall, the thickness is 110mm, including 50mm gypsum thermal insulation mortar, 30mm wall sprayed mortar layer, wall heat transfer coefficient 1.18 [W/m2.K], including steel, steel mesh, The first wall is sprayed with mortar layer, the second wall is sprayed with mortar layer and the gypsum insulation mortar layer; steel mesh is installed in the middle of the section steel and fixed with the beam and column structure, and it is arranged on the gypsum insulation mortar layer, the first wall The interior of the sprayed mortar layer and the second wall sprayed mortar layer, and the steel, steel mesh, gypsum thermal insulation mortar, and wall sprayed mortar form an integrated structure; the gypsum thermal insulation mortar layer is sprayed on the steel mesh, The reinforcement mesh is embedded in the first wall sprayed mortar layer on the inner side, and the reinforced mesh is implanted in the second wall sprayed mortar layer on the outer side to cover and protect.

The construction sequence is characterized by: installing U-shaped steel and fixing it with beams and columns → installing a reinforced expansion net in the middle of the U-shaped steel → spraying gypsum insulation mortar on the reinforced expansion net from both sides → punching reinforcement on the inner and outer walls (high Extruded steel 25mm) → Spray the mortar on the inside and outside of the wall, implant the reinforcement mesh and scrape it with the punching bar.

The section steel is a U-section steel with a specification of 40*40*1.2, which is arranged and welded according to vertical 500mm and horizontal 1000mm intervals and connected with the beam-column structure.

The specification of the expanded mesh with ribs is 4.5*15*1.0mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 30mm, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The gypsum thermal insulation mortar is used in the middle of the wall, with a thickness of 50mm, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤500 ≥0.4 ≤0.10 A

The coated medium-alkali glass fiber grid is finally implanted after spraying mortar on the inner and outer walls, and its technical indicators are:

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

Embodiment Three

A gypsum thermal insulation mortar interior wall composite wall, the thickness is 100mm, including 60mm gypsum thermal insulation mortar, 20mm wall sprayed mortar layer, wall heat transfer coefficient 1.20 [W/m2.K], including steel, steel mesh, The first wall is sprayed with mortar layer, the second wall is sprayed with mortar layer and gypsum insulation mortar layer; steel mesh is installed on one side of the section steel and fixed with the beam and column structure, and it is arranged on the gypsum insulation mortar layer, the first wall body sprayed mortar layer, the interior of the second wall sprayed mortar layer, and the steel, steel mesh, gypsum thermal insulation mortar, and wall sprayed mortar form an integrated structure; the gypsum thermal insulation mortar layer is sprayed on the steel mesh , and is covered and protected by the sprayed mortar layer of the first wall on the inside and the sprayed mortar layer on the second wall on the outside.

The characteristics of the construction sequence are as follows: install square steel and fix it with beams and columns → install ribbed expansion net on the outside of square steel → spray gypsum insulation mortar in two layers from inside to outside with rib expansion net (each spraying thickness is about 30mm) →Punch the reinforcement on the inner and outer walls (the outer side is 20mm higher than the section steel, and the inner side is 10mm higher than the section steel)→Spray the mortar on the inner and outer sides and scrape it flat.

The specification of the square steel is 30*40*1.2, arranged and welded according to the interval of 500mm vertically and 1000mm horizontally and connected with the beam-column structure.

The specification of the expanded mesh with ribs is 4.5*15*0.8mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 20mm, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The gypsum thermal insulation mortar is used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤500 ≥0.4 ≤0.10 A

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. without further restrictions. The phrase "the inclusion of an element defined by ... does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising said element".

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. a kind of gypsum insulation mortar interior wall combined wall, it is characterised in that：Mortar is built including shaped steel, steel mesh, the spray of the first wall Screed and gypsum insulation screed are built in layer, the spray of the second wall；Centre, the one or both sides of the shaped steel be equipped with steel mesh and with Beam column construction is fixed, be arranged gypsum insulation screed, the first wall spray build screed, the second wall spray build in screed Portion, and integrated structure between mortar is built in the spray of shaped steel, steel mesh, gypsum insulation mortar, wall；The gypsum insulation screed spray Build on steel mesh, and by the first wall of inside spray build screed, the second wall of outside spray build screed covering protection.

2. a kind of gypsum insulation mortar interior wall combined wall according to claim 1, sequence of construction are characterized in that：Installation Shaped steel and with beam column fix → install on steel mesh and shaped steel → to steel mesh be layered injection gypsum insulation mortar → inside and outside metope Floating screed is simultaneously higher by the outside of shaped steel → inside injection wall spray and builds mortar and strike off.

3. a kind of gypsum insulation mortar interior wall combined wall according to claim 1, it is characterised in that：The shaped steel includes The proximate matters such as light gauge cold-formed steel shape, angle steel, channel steel, H profile steel, square tube, pipe, shaped steel need to be wanted through antirust treatment, size according to structure Ask setting.

4. a kind of gypsum insulation mortar interior wall combined wall according to claim 1, it is characterised in that：The steel wire is With mild steel wire, bullet wire, high-carbon steel wire, the materials such as stainless steel wire weave or are welded into the general name of Web materials, including Expanded metal lath (seine), steel wire (mesh grid) and welded mesh, steel wire need to be set through preservative treatment, size according to structural requirement.

5. a kind of gypsum insulation mortar interior wall combined wall according to claim 1, it is characterised in that：The wall spray is built Mortar, gypsum insulation mortar are by industry by-product gypsums such as ardealites as cementitious material, glass bead (or perlite) conduct Aglite, compound a variety of additives are mixed into single component in factory according to a certain ratio, transport scene after packed to, use is special Equipment carries out spray and builds construction.Scene only needs water source, power supply being communicated to equipment interface, and mortar is built in wall spray and pours into equipment charging Mouth, which can spray, to be built；Live neat and tidy without take material, without rubbish, meet fabricated construction requirement；

Described spray builds the technical indicator of mortar and is：

Project name Dry density Compression strength Thermal coefficient Burning behavior class Unit kg/m3 Mpa [w/(m.K)] Technical indicator ≤1000 ≥2.5 ≤0.40 A

The technical indicator of the gypsum insulation mortar is：

Project name Dry density Compression strength Thermal coefficient Burning behavior class Unit kg/m3 Mpa [w/(m.K)] Technical indicator ≤500 ≥0.2 ≤0.10 A

6. a kind of gypsum insulation mortar exterior wall composite wall according to claim 1, it is characterised in that：Sand is built in the wall spray Pulp layer should be layered injection, and per pass jet thickness is not more than 50mm；Next process construction is carried out after drying again.