CN108412118A - A kind of gypsum mortar composite insulation boards interior wall wall and its application - Google Patents

Abstract

The invention discloses a gypsum mortar composite thermal insulation board inner wall, which comprises a profile steel, a steel mesh, a high-efficiency thermal insulation mortar board, a first wall sprayed mortar layer, and a second wall sprayed mortar layer; one of the profiled steel Steel mesh is installed on one or both sides and fixed to the beam-column structure. It is set inside the high-efficiency thermal insulation sand board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer. The board and the wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the steel mesh, and is covered and protected by the first wall sprayed mortar layer and the second wall sprayed mortar layer. The inner wall of the gypsum mortar composite thermal insulation board is all prefabricated in the factory and delivered to the site for installation, or the factory prefabricated panels are delivered to the site for assembly, seamlessly connected with other structures, no hollowing, no cracking, and more energy-saving , The construction is fast and efficient, the site is clean and tidy, the wall is light, energy-saving, fire-resistant, earthquake-resistant, sound-proof, and humidity-adjustable. It is a subversion and innovation of traditional enclosure structures such as masonry and wall panels.

Description

A gypsum mortar composite insulation board interior wall and its application

technical field

The invention relates to the technical enclosure structure field of house construction, in particular to a gypsum mortar composite thermal insulation board inner wall body, the structure can be constructed by dry method on site, or prefabricated boards can be installed on site.

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 mortar composite insulation board interior wall body of wall, 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 external wall, comprising profile steel, steel mesh, high-efficiency thermal insulation mortar board, a first wall sprayed mortar layer, and a second wall sprayed mortar layer; steel mesh is installed on both sides of the profile steel And fixed with the beam-column structure, it is set inside the high-efficiency thermal insulation sand board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer, and the section steel, steel mesh, high-efficiency thermal insulation board, and wall sprayed mortar An integrated structure; the high-efficiency thermal insulation board is installed 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 steel mesh can also be replaced by a reinforced mesh, which is embedded in the sprayed mortar surface layer of the wall on the side where the steel mesh is not installed; 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, through the connection of section steel and steel structure, concrete structure, and wooden structure, it is integrated with structural beams and columns; the wall is sprayed with mortar and insulation boards, which are lightweight, It is a flexible material characterized by non-combustibility, sound insulation, and heat insulation. It adopts continuous spraying to ensure that the wall has no gaps. Perfect effect; 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 on the wall A series of actions, the site is clean and neat, no waste and no garbage (only packaging bags can be recycled), 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 greater than 45dB, and the heat transfer coefficient is less than or equal to 0.9W/(m ² .k).

As a preferred technical solution of the present invention, its construction sequence is characterized in that: install profile steel and fix it with beams and columns → install steel wire mesh on the inside and outside of profile steel (both sides are hot-dip galvanized steel wire mesh or ribbed expansion mesh) → install insulation board Between the steel mesh → Punch the walls on both sides of the inside and outside → Spray the mortar on both sides of the wall 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 steel mesh has a reinforced expanded mesh with a specification of 4.5*15*0.6mm; and a hot-dip galvanized steel mesh with a mesh aperture of 10*10*0.6mm.

As a preferred technical solution of the present invention, the wall sprayed mortar is used on the outside 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 high-efficiency thermal insulation board is an EPS molded polystyrene board, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] technical indicators ≤22 ≤6 ≤0.045 B

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 should be completely dry before carrying out surface 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, it consumes a large amount of industrial by-product gypsum such as phosphogypsum, turns waste into treasure, and solves 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, insulation board, 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, bagged and delivered to the site, and sprayed with special equipment. During construction, it is only necessary to connect electricity and water to enter the machine. Fully compliant with dry work requirements.

3. The raw materials used in the wall spraying mortar and gypsum 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-sprayed mortar layer on the first wall, 4-sprayed mortar layer on the second wall, 5-high-efficiency insulation board.

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 gypsum mortar composite thermal insulation board inner wall with a thickness of 120mm, of which the thermal insulation board is 60mm, the wall sprayed mortar is 30mm each, and the wall heat transfer coefficient is 0.63 [W/m2.K], including steel, steel mesh, high efficiency Insulation mortar board, sprayed mortar layer on the first wall, and sprayed mortar layer on the second wall; steel mesh is installed on both sides of the profile steel and fixed with the beam and column structure, and is set on the high-efficiency thermal insulation sand board, sprayed on the first wall The inside of the mortar layer and the second wall sprayed mortar layer, and the section steel, steel mesh, high-efficiency thermal insulation board, and wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the steel mesh, and is The first wall is sprayed with mortar layer, and the outer second wall is sprayed with mortar layer for covering protection;

The construction sequence is characterized by: install C-shaped steel and fix it with beams and columns → install hot-dip galvanized steel wire mesh on one side of C-shaped steel → install insulation boards, fixed steel and steel mesh → install hot-dip galvanized steel mesh on the other side of C-shaped steel Side→Inner and outer wall punching ribs→Spray the outer wall mortar from the outside to the inside and scrape it with the ribs→Spray the inner wall mortar from the outside to the inside and scrape it with the ribs.

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

The mesh aperture of the hot-dip galvanized steel mesh is 10*10*0.6mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 30mm, 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 high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] technical indicators ≤22 ≤6 ≤0.045 B

The wall spraying mortar is sprayed with 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 mortar composite thermal insulation board inner wall with a thickness of 110mm, wherein the thermal insulation board is 50mm, the wall sprayed mortar layer is 30mm each, and the wall heat transfer coefficient is 0.72 [W/m2.K], including steel, steel mesh, High-efficiency thermal insulation mortar board, sprayed mortar layer on the first wall, and sprayed mortar layer on the second wall; steel mesh is installed on one or both sides of the profiled steel and fixed to the beam-column structure, set on the high-efficiency thermal insulation sand board, The first wall is sprayed with mortar layer, the inside of the second wall is sprayed with mortar layer, and the section steel, steel mesh, high-efficiency thermal insulation board and wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the steel The net 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 U-shaped steel and fixing it with beams and columns → installing ribbed expansion nets on one side of the U-shaped steel → installing insulation boards → punching ribs on the inner and outer walls (25mm higher than the shaped steel) → spraying on the inner and outer sides The wall is sprayed with mortar and leveled with the punching bars, and at the same time, the wall on the side where the steel wire mesh is not installed is sprayed with mortar to implant the reinforcement mesh.

The specification of the U-shaped steel is 40*40*1.2, 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 high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 50mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] technical indicators ≤22 ≤6 ≤0.045 B

The reinforcing net is coated with medium-alkali glass fiber mesh cloth, and its technical index is:

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 mortar composite thermal insulation board inner wall with a thickness of 100mm, in which the thermal insulation board is 60mm, the wall sprayed mortar layer is 20mm each, and the wall heat transfer coefficient is 0.67 [W/m2.K], including steel, steel mesh, High-efficiency thermal insulation mortar board, sprayed mortar layer on the first wall, and sprayed mortar layer on the second wall; steel mesh is installed on one or both sides of the profiled steel and fixed to the beam-column structure, set on the high-efficiency thermal insulation sand board, The first wall is sprayed with mortar layer, the second wall is sprayed with mortar layer, and the section steel, steel mesh, high-efficiency thermal insulation board, and wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the steel The net 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 square steel and fixing it with beams and columns → installing ribbed expansion nets on the outside of the square steel → installing insulation boards → punching reinforcement on the inner and outer walls (both sides are 20mm higher than the shaped steel) → inner and outer sides Spray the wall with mortar and smooth it.

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 high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] technical indicators ≤22 ≤6 ≤0.045 B

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.

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 mortar composite insulation boards interior wall wall, it is characterised in that：Including shaped steel, steel mesh, efficient thermal-insulation mortar plate, Screed is built in the spray of first wall, screed is built in the spray of the second wall；The one or both sides of the shaped steel are equipped with steel mesh and and beam column Structure is fixed, and is arranged screed is built in high-efficiency insulated sand plate, the spray of the first wall, the inside of screed, and type are built in the spray of the second wall Integrated structure between mortar is built in steel, steel mesh, high-efficiency insulated plate, wall spray；The high-efficiency insulated plate is mounted on steel mesh, and Screed is built by the spray of the first wall of inside, screed covering protection is built in the spray of the second wall of outside.

2. a kind of gypsum mortar composite insulation boards interior wall wall according to claim 1, sequence of construction are characterized in that：Peace Dress shaped steel and with beam column fix → install steel mesh on shaped steel → installation thermal insulation board on steel mesh or shaped steel → 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 mortar composite insulation boards interior wall wall according to claim 1, it is characterised in that：The shaped steel packet The proximate matters such as light gauge cold-formed steel shape, angle steel, channel steel, H profile steel, square tube, pipe are included, shaped steel need to be through antirust treatment, and size is according to structure It is required that setting.

4. a kind of gypsum mortar composite insulation boards interior wall wall according to claim 1, it is characterised in that：The steel mesh 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 mesh need to be set through preservative treatment, size according to structural requirement；

The steel mesh can also be replaced with reinforcing mat, be embedded in as needed do not install steel mesh side wall spray build mortar surface layer In.

5. a kind of gypsum mortar composite insulation boards interior wall wall according to claim 1, it is characterised in that：The wall spray It is to be used as aglite as cementitious material, glass bead (or perlite) by industry by-product gypsums such as ardealites, answer to build mortar It closes a variety of additives and is mixed into single component in factory according to a certain ratio, transport scene to after packed, sprayed using special equipment Build construction；Scene only needs water source, power supply being communicated to equipment interface, builds mortar and pour into equipment feed inlet and can spray wall spray It builds；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

6. a kind of light gauge cold-formed steel shape external wall energy-saving cracking resistance wall structure according to claim 1, it is characterised in that：It is described Thermal insulation board includes EPS moldings styrofoam, XPS extruded polystyrene boards, PU rigid polyurethane foam boards (or polyurethane on-the-spot foam), rock The efficient energy-saving materials such as (mine) cotton plate, glass wool product, foam glass, polyethylene foams, phenolic foam.