Metal mesh multifunctional wall and construction techniques thereof
Technical field
The present invention relates to a kind of wall of building, especially relate to a kind of metal mesh multifunctional wall and construction techniques thereof.
Background technology
In industry and civilian construction, nonweight-bearing internal partition wall, party wall and heat preserving exterior wall etc. are its important ingredients.Along with development of science and technology, the construction wall with performances such as light-duty, insulation, heat insulation, de-noising, fire prevention and environmental protection obtains development and application rapidly.
Chinese patent CN2469086 provides a kind of wall structure of building, constitute by skeleton and cement paste curing, skeleton is by most wire laths and close, form the hollow channel that connects therebetween, the dual side-edge of wire lath is embedded at supporter, and the body sealing of can being contracted of the limit, upper end of wire lath can be contracted body into strips, it has fitting portion and convex body, and the limit, lower end of wire lath is located by the keeper clamping.Has the effect that easy construction reached and reduced the construction cost expense.
Chinese patent CN2530996 provides a kind of wire lath wall base plate, and being harmonious by corresponding relation by the indentation metal otter board more than two layers forms, and forms hollow or vertical passage; The upper end of metal otter board is provided with the surplus draw-in groove, and L shaped iron is established in the lower end of metal otter board, and a side or two sides of metal otter board are received bar and link slot.After the present invention has adopted these technical schemes, not only improved construction quality, and low cost of manufacture, walling is convenient.
Summary of the invention
The object of the present invention is to provide a kind of body of wall rigidity higher, crack resistance and stability are better, speed of application is fast, globality is strong, fire prevention, waterproof and sound insulation value are good, there is any bending curvature shape formative nature strong, is applicable to the metal mesh multifunctional wall and the construction techniques thereof of the metopes such as non-bearing internal partition wall, party wall and heat preserving exterior wall in industry and the civilian construction.
Metal mesh multifunctional wall of the present invention is provided with skeleton and cement-flying ash mortar layer (the cement-flying ash mortar layer also claims the hanging layer), skeleton is made up of two identical shaped wire laths and metal keel (hereinafter to be referred as keel), the cement-flying ash mortar layer is coated on outside the skeleton, the cement-flying ash mortar layer is fixed by the wedge section and the mesh of wire lath, keel are provided with along keelson and vertical keel, link by structure support face and vertical keel along keelson.
In the middle of being preferably, two identical shaped wire laths become I-shaped wire lath.Wire lath can adopt (0.6~0.8) mm, is preferably the thick cold-rolled steel coils of 0.8mm, and is netted towards pulling into punch press, through roller machine backfin waviness net sheet.It is that 9mm * major diameter is 18mm that the mesh specification of wire lath can be minor axis, minor axis is that 12mm * major diameter is that 25mm or minor axis are that 15mm * major diameter is 30mm, the mesh specification is that the wire lath of minor axis 9mm * major diameter 18mm is suitable for internal partition wall and uses, and the mesh specification is that minor axis 12mm * major diameter 25mm or mesh specification are that the wire lath of minor axis 15mm * major diameter 30mm uses as heat preserving exterior wall.Because the planeness of wire lath directly has influence on the quality of body of wall, so allowable error and presentation quality require and should strictly control.The width of each sheet wire lath of internal partition wall that 90mm is thick is 540mm, and hollow thickness is 55mm; The width of each sheet wire lath of heat preserving exterior wall that 160mm is thick is 430mm, and hollow thickness is 100mm.The groove of wire lath can adopt filling mortar (cement, flyash and mortar) to fill and lead up, with mechanical shotcrete construction or manual smearing.
In the cavity in body of wall, promptly can insert heat preserving and insulating material in the mesh of wire lath, with as thermal insulation outer wall; Or insert solid concrete, make body of wall bear big loading in the part; Or penetrate pipeline, with passage as pipeline.Though metal mesh multifunctional wall strength of wall body of the present invention is that rigidity is better, still can not be used as load bearing wall, also stipulated the certain altitude restriction in the scope of application.When heavier suspender member and equipment are hung or born to need, can before plastering, disconnect local web plate hollow parts, fill out, can bear big loading in the part with solid concrete.When doing thermal insulation outer wall, owing in the body of wall cavity is arranged, can directly fill heat preserving and insulating material, need not to do insulation layer in addition at wall face, thus also can drawing-in wire, be the built-in heat insulation heat insulation exterior of innovating most at present.
Press mass ratio, the proportioning of cement-flying ash mortar is a cement: flyash: mortar=(0.8~1.0): (0.1~0.15): 2.5, be preferably cement: flyash: mortar=0.9: 0.1: 2.5, its water/binder ratio (weight ratio of water and cement) is preferably 0.37~0.40, and consistency of mortar (being the denseness of whole hanging) is preferably 80~90mm.But fill groove mechanically spraying or manual smearing.
Be preferably L shaped keel along keelson, be mainly used in the link structure of vertical keel and structure support face.When L shaped keel are used in when doing the radian wall, can be with accessory crooked or cut out and be combined into arc.Vertical keel are preferably the vertical keel of C shape, strengthen the glacing flatness rigidity of metal otter board when being mainly used in construction, the operation of being convenient to plaster.
Keel also can be provided with the reinforcement keel, and the reinforcement keel can comprise the willfully strong keel of C shape or/and the willfully strong keel of U-shaped are strengthened the reinforcement that keel can be used for other keel, door and window hole etc.Along keelson, vertical keel with strengthen can being provided with the hole on the keel, described hole is used for the effective cohesion between wire lath, keel, the cement-flying ash mortar three, makes the fixing more firm of door and window hole.
On cement-flying ash mortar layer (being the hanging layer), be provided with the middle level screed, the middle level screed is as the levelling crack-resistant layer, the middle level screed is made up of cement, flyash and mortar or cement, sand and polyethylene defend and split fibre, press mass ratio, cement: flyash: mortar=(0.8~1.0): (0.1~0.15): 2.5, be preferably cement: flyash: mortar=0.9: 0.1: 2.5; Or cement: sand: polyethylene defend and split fibre=(0.1~0.15): (2.5~3.5): 0.003, be preferably cement: sand: polyethylene defend and split fibre=0.1: 3: 0.003.The denseness of middle level screed is preferably 50~70mm, and the thickness of internal partition wall middle level screed is preferably 15~20mm; The thickness of outer partition wall middle level screed is 25mm~35mm.
Be provided with the surface layer screed on the screed of middle level, the surface layer screed adopts cement, lime and yellow ground composite mortar, presses mass ratio, preferably cement: lime: yellow ground=1: 1: 4, surface layer screed can adopt and whitewash technology, and paper strip mixed lime mortar is criticized flat.The length of polyethylene defend and split fibre that is used for the middle level screed of anticracking is preferably 12~19mm, and diameter should≤50 μ m, and diameter is preferably 40~50 μ m.
The construction techniques of metal mesh multifunctional wall of the present invention may further comprise the steps:
1) preparation of construction: carry out in-site measurement according to fixed drawing, calculation Design also prepares required keel, wire lath sheet and Hardware fitting; The establishment constructure scheme.
2) the construction line-putting: measure the body of wall axis according to reference line, and the body of wall that draws is installed control line and door and window hole position.
3) install L shaped along keelson and wall limit fixture: by the setting-out line of ink marker, install and fix L shaped along keelson with the self-tapping screw of nailing or band plastic expansion sleeve pipe.
4) wire lath sheet assembly assembling and reinforcing: with the assembly unit of two wire lath sheets, the vertical keel of C shape are set in the centre, and are connected back installation and reinforcing with the wire lath sheet.
5) water power pipe arrangement: after wire lath sheet assembling finishes, when carrying out the water power pipe arrangement, the water power pipe arrangement is laid in the wire lath sheet groove, and fixing.
6) heat preserving exterior wall inserts construction: in the merging space of wire lath, carry out the filling of sound-insulating material.
7) plaster: plastering mainly is divided into three steps: the first step: fill out groove, second step: bottoming, the 3rd step: floating screed is wiped one's face.
8) final acceptance of construction: wall plastering is in time filled out and is decided completion report of construction work after finishing, and asks Party A, management to carry out final acceptance of construction, and carry out the final acceptance of construction record.
In preparation of construction, can carry out in-site measurement according to fixed drawing, calculation Design also prepares required keel, wire lath sheet and Hardware fitting, work out constructure scheme again, according to engineering specifications, determine on-the-spot water supply, power supply and means of transportation, the establishment labour need plan and definite in advance construction team.
In the construction line-putting, can measure and eject according to the body of wall axis of the reference line that provides the needs construction with the line of ink marker, measure body of wall according to the body of wall axis to both sides again and control line is installed and is ejected, with plumb bob bottom line is caused on ceiling and original wall and the post and eject with ink line; The position of door and window hole should mark, also indicate size and height simultaneously when unwrapping wire.
L shaped along in keelson and the wall limit fixture in installation, described fixing spacing is preferably 400~500mm.
In the wire lath sheet is pieced together assembling and is reinforced, the wire lath sheet is stitched together two wire lath sheets on operating platform before installing in advance, fix with No. 22 Zha Silian between the two wire lath sheets during assembly unit of wire lath sheet, spacing 300~400mm, the spacing of the vertical keel of C shape is 450~550mm, is preferably 500mm.
In the water power pipe arrangement, after wire lath sheet assembling finishes, in the wire lath sheet groove that should be laid at once when carrying out the water power pipe arrangement, and prick a colligation with No. 22, spacing is preferably 500mm.
When metal mesh multifunctional wall is used for indoor nonbearing partition, around the partition wall reliable structure support should be arranged.
Body of wall T, L shaped node and cross node should be set up keel reinforcement and reinforcement metal net, must fix with staple or iron wire between keel and wire lath.
During the assembling metal net, along keelson and vertical keel junction up and down, wire lath can be cut off, be fixed on along the keelson outside, the other parts wire lath inserts to be gone up in the keelson of lower edge.Also can all put into, and fix with iron wire along keelson.
The present invention is applicable to nonweight-bearing internal partition wall, party wall and heat preserving exterior wall in the industry of newly-built or reorganization and expansion and the civilian construction, also applicable to the metope of damp rooms and plane arc.With the existing non-bearing internal partition wall that is applicable in industry and the civilian construction, party wall is compared with the body of wall and the construction techniques thereof of metopes such as heat preserving exterior wall, the present invention is owing to the skeleton that adopts is made up of two identical shaped middle I-shaped wire lath of one-tenth and metal keel (hereinafter to be referred as keel), the cement-flying ash mortar layer is coated on outside the skeleton, the cement-flying ash mortar layer is fixed by the wedge section and the mesh of wire lath, keel are provided with along keelson and vertical keel, link by structure support face and vertical keel along keelson, therefore not only to have globality strong for metal mesh multifunctional wall of the present invention, rigidity is strong, fire-resistant and good waterproof performance, thermal insulation and sound insulation are good, be easy to construction, quick construction, outstanding advantage such as operation with traditional, and can reduce construction cost significantly, simultaneously can make curved wall, applicable surface is wider.
Description of drawings
Fig. 1 is the section structure schematic diagram of the embodiment of the invention.
Fig. 2 is that the wall limit of Fig. 1 reinforces schematic diagram.
Fig. 3 is a partition wall T type connected node structural representation.
Fig. 4 connects the node structure schematic diagram for " L " type.
Fig. 5 is " ten " type connected node structural representation.
Fig. 6 is the unitary piece of metal net sheet contour structures schematic diagram of the embodiment of the invention.
Fig. 7 is the sectional drawing of Fig. 2.
Fig. 8 is the mesh enlarged drawing of Fig. 2.
Fig. 9 is the reinforcement keel structure schematic diagram (the willfully strong keel of U-shaped are called ST-1 type keel) of the embodiment of the invention.
Figure 10 be the embodiment of the invention along keelson structural representation (L shaped horizontal stroke is called ST-2 type keel along keelson).
Figure 11 is the vertical keel structure schematic diagram (the vertical keel of C shape are called ST-3 type keel) of the embodiment of the invention.
Figure 12 is the reinforcement keel structure schematic diagram (the willfully strong keel of C shape are called ST-4 type keel) of the embodiment of the invention.
Figure 13 is the reinforcement keel structure schematic diagram (the willfully strong keel of U-shaped are called ST-5 type keel) of the embodiment of the invention.
Figure 14 be the embodiment of the invention along keelson structural representation (L shaped horizontal stroke is called ST-6 type keel along keelson).
Figure 15 is the vertical keel structure schematic diagram (the vertical keel of C shape are called ST-7 type keel) of the embodiment of the invention.
Figure 16 is the reinforcement keel structure schematic diagram (the willfully strong keel of C shape are called ST-8 type keel) of the embodiment of the invention.
Figure 17 is the lightgage steel joist of the embodiment of the invention and the scheme of installation of wire lath.In Figure 17, A is willfully strong keel (ST-1 type keel) of U-shaped and wire lath fixed point, and B is along keelson and structure fixed point, and wire lath splicing place constant spacing D≤250,3 are vertical keel.
Figure 18 and Figure 19 are that the wire lath of the embodiment of the invention inserts the schematic diagram of going up the lower edge keelson.In Figure 18 and 19,51 is the willfully strong keel of U-shaped, is called ST-1 type keel (referring to Fig. 9), and 31 is the vertical keel of C shape, is called ST-3 type keel (referring to Figure 11).
Figure 20 is the heat preserving exterior wall inserts construction schematic diagram of the embodiment of the invention.
The specific embodiment
Following examples will the present invention is further illustrated in conjunction with the accompanying drawings.
Present embodiment is applicable to indoor nonbearing partition, around the partition wall reliable structure support should be arranged.
Metal mesh multifunctional wall of the present invention is provided with skeleton and cement-flying ash mortar layer (the cement-flying ash mortar layer also claims the hanging layer), skeleton is made up of two identical shaped middle I-shaped wire lath of one-tenth and keel, the cement-flying ash mortar layer is coated on outside the skeleton, the cement-flying ash mortar layer is fixed by the wedge section and the mesh of wire lath, keel are provided with along keelson and vertical keel, along keelson is L shaped keel, be mainly used in the link structure of vertical keel and structure support face, vertical keel are the vertical keel of C shape, strengthen the glacing flatness rigidity of metal otter board when being mainly used in construction, the operation of being convenient to plaster.
Referring to Fig. 1, skeleton is formed by vertical keel 3 and wire lath 1 in metal mesh multifunctional wall inside, covers cement-flying ash mortar layer 2 outward, and the partition wall technical indicator should meet the regulation of table 1.
Table 1 internal partition wall and heat preserving exterior wall technical indicator
Sequence number |
Project | Unit |
Index | |
1 |
Thickness of wall body |
mm |
90mm (interior wall) |
160mm (exterior wall) |
2 |
Surface density |
kg/m
2 |
≤90 |
≤160 |
3 |
Moisture content |
% |
≤12/10/8 |
≤12/10/8 |
4 |
Compressive strength |
MPa |
≥3.5 |
≥3.5 |
5 |
Bending resistance rupture load/plate deadweight multiple |
kN |
≥1.5 |
≥1.5 |
6 |
Shock resistance |
Inferior |
≥10 |
≥20 |
7 |
Hanging force |
N |
≥1000 |
≥1000 |
8 |
Drying shrinkage value |
mm/m |
≤0.6 |
≤0.6 |
9 |
Coefficient of softening |
|
≥0.8 |
≥0.8 |
10 |
The radioactive material nucleic is limited the quantity of |
Ira internal radiation index |
≤1.0 |
≤1.0 |
Ira shines index outward |
≤1.3 |
≤1.3 |
11 |
Fire endurance |
h |
≥1.5 |
≥2.0 |
12 |
Thermal transmittance |
W/m
2.K
|
- |
≤2.0 |
13 |
The air sound insulation factor |
dB |
43~45 |
45~49 |
The partition wall height is answered≤4500mm, when height>4500mm, answers otherwise designed.When body of wall lateral length>6000mm, should establish the shrinkage joint.Except that wire lath, the hardware of all ferrous metal all should zinc-plated or antirust processing.
When this partition wall was used for moist room such as lavatory and kitchen, the C20 pea gravel concreten wall pad of height>120mm should be established in the partition wall bottom.Last lower support along keelson and flooring should be fixed with cement steel nailing, and constant spacing is suitable≤500mm.The member that bears down on one of lateral resisting should be arranged at the half wall top of not having supporting up and down, and bear down on one member and side direction body junction member should fixedly secure, and wall length is answered<6000mm.Door and window perforate and horizontal unsettled marginal portion on the body of wall are all used the vertical keel 31 of light steel and are reinforced, and strengthen with wire lath 1 outsourcing.Referring to Fig. 2.
It is firm with the metal otter board colligation that inner pre-buried utility line of body of wall and junction box etc. are used iron wire, and it is firm in time to crouch with cement mortar, does not make loosening.The horizontal tube spool of embedding wall footpath must not>25mm, horizontal length must not>500mm, and, cover expanded metal lath outward and strengthen in time with the cement mortar jail of crouching.Wire lath exterior rendering structure by the hanging layer, fill out groove, middle level leveling layer and surface layer four parts and form.The middle level leveling layer should adopt the anticracking mortar.
Below provide joint structure.Body of wall T, L shaped node and cross node should be set up and strengthen keel and reinforcement metal net 4, and 1 of keel 31 and wire lath must be fixed with staple or iron wire.Referring to Fig. 3~5.
Below provide the structure design of wire lath sheet.
The profile of wire lath 1 is referring to Fig. 6~8, and the steel plate thickness that wire lath 1 adopts is the cold-reduced sheet of 0.8mm, also can adopt hot cold-rolled steel sheet and steel band, and mesh 11 specifications are 9mm * 18mm or 12mm * 25mm.The specification of wire lath 1 and technical indicator should meet the regulation of table 2 and 3.
Table 2 wire lath sheet specification (1 type)
Sequence number |
Project |
Size (mm) |
Tolerance (mm) |
1 |
Wire lath length |
By customer requirement |
±20 |
2 |
The wire lath width |
540 |
±10 |
3 |
The hollow width |
55 |
±5 |
4 |
The wire lath mesh |
Major diameter: 18, minor axis: 9 |
±0.5 |
5 |
Internal mold wire lath sheet line stalk thickness |
0.6~0.8 |
±0.1 |
Table 3 wire lath sheet specification (2 type)
Sequence number |
Project |
Size (mm) |
Tolerance (mm) |
1 |
The wire lath leaf length |
By customer requirement |
±20 |
2 |
The metal netting width |
430 |
±20 |
3 |
The hollow width |
100 |
±10 |
4 |
Wire lath sheet mesh |
Major diameter: 25 (30), minor axis: 12 (15) |
±0.5 |
5 |
Internal mold wire lath sheet line stalk thickness |
0.8 |
±0.1 |
Annotate: 1 type is as the internal partition wall use of plastering, and 2 types are as the heat preserving exterior wall use of plastering.
Below provide the structure design of keel.
1) the willfully strong keel of U-shaped: become C shape (ST-1 by cold rolling or hot rolled steel plate clod wash; ST-5), the willfully strong keel of U-shaped are a kind of horizontal reinforcement keel, as a kind of dead joint member up and down.Fig. 9 provides the willfully strong keel 51 (ST-1 type) of U-shaped, and Figure 13 provides the willfully strong keel 53 (ST-5 type) of U-shaped.
2) along keelson: by the cold rolling or L shaped (ST-2 of hot rolled steel sheet rolling; ST-6), as the connecting elements of vertical keel and support structure face.Figure 10 provides L shaped horizontal stroke along keelson 61 (ST-2 type), and Figure 14 provides L shaped horizontal stroke along keelson 62 (ST-6 type).
3) vertical keel: roll into C shape (ST-3 by cold rolling or hot rolled steel sheet; ST-7), constitute rack, the rigidity of expanded metal lath when constructing to increase with the profiled sheet net.Figure 11 provides the vertical keel 31 of C shape (ST-3 type), and Figure 15 provides the vertical keel 32 of C shape (ST-7 type).
4) strengthen keel: as the usefulness of door and window hole and reservation hole reinforcement.Become C shape (ST-4 by cold rolling or hot rolled steel plate clod wash; ST-8).Figure 12 provides the willfully strong keel 52 (ST-4 type) of C shape, and Figure 16 provides the willfully strong keel 54 (ST-8 type) of C shape.
The willfully strong keel of U-shaped, along keelson, vertical keel and the shape of strengthening keel referring to Fig. 9~16, specification sees Table 4.
Table 4 keel specification (mm)
Annotate: ab respectively is the model of steel plate thickness 0.4mm and 0.5mm, and b type keel are as the superelevation body of wall.
Below provide the design scheme of cement-flying ash mortar layer (hanging layer).
1) hanging layer proportioning is preferably cement: flyash: mortar=0.9: 0.1: 2.5, and its water/binder ratio is preferably 0.37~0.40, and consistency of mortar is preferably 80~90mm.
2) fill mortar: be used to fill and lead up the wire lath groove,, adopt cement: flyash with mechanical shotcrete construction or manual smearing: the cement-flying ash mortar of mortar=0.9: 0.1: 3, water/binder ratio is 0.37~0.40, filling groove consistency of mortar is 80~90mm.
3) middle level screed: as the levelling crack-resistant layer, can adopt cement: flyash: mortar=0.9: 0.1: 3 cement-flying ash mortar, or cement: sand: the anticracking mortar of polyethylene defend and split fibre=0.1: 3: 0.003, consistency of mortar is 50~70mm, mortar thickness should be less than 20mm.
4) surface layer screed: adopt cement: flyash: mortar=mixed powder coal ash mortar whitewashed in 1: 1: 4, and paper strip mixed lime mortar is criticized flat.
5) the polyethylene defend and split fibre length that is used for the anticracking mortar is preferably 12~19mm, and diameter should≤50 its technical indicators of μ m. should meet the regulation of table 5.
Table 5 defend and split fibre technical indicator
Project |
Unit |
Index |
Proportion |
kg/m
3 |
0.91 |
Length |
mm |
12~19 |
Tensile strength |
MPa |
≤400 |
Modulus of elasticity |
Gpa |
≥3.0 |
Fibre diameter |
μm |
≤50 |
Below provide construction machinery required for the present invention, professional equipment whitewashing important technological parameters should meet following provisions.
1) whitewashing main frame: the mortar amount of telling is 60L/min, and the fan-out capability level is 200m, is 87m vertically, and the pressure that spues is 30kg/cm to the maximum
2, power is 5HP.
2) mortar mixer cone capacity is 160L, and the joint screen distance is 3mm, and power is 1HP.
3) the mixer capacity is 360L, and power is 3HP.
4) the air compressor machine capacity is 150L, and working pressure is 7kg/cm
2, power is 3HP.
The wire lath fixing machine is portable special-purpose machines and tools.By hand can during colligation.Ail gun is portable general utility tool.
Below provide concrete construction techniques.
1) preparation of construction: the wire lath of marching into the arena, keel, and building materials such as Hardware fitting, cement, flyash, sand should in time check and accept; Construction equipments such as mortar mixer, air pump, pulp shooting machine should be debugged normally; Consumer should have the safety ground system.At the bottom of ground, beam slab, mark body of wall center line and sideline by designing requirement, and mark door and window and openings position, check pipeline position through walls and the mistake wall.Be equipped with the mortar of the different proportionings of different levels by technological requirement.
2) installation of lightgage steel joist and wire lath: by on-the-spot scribing position install, the lower edge keelson, fixedly the cement nail spacing should≤500mm.By designing requirement and wire lath waveform spacing, vertical steel joist is installed, and is done temporary fixed.Vertical keel spacing is answered≤500mm.The fixed point spacing of vertical keel and wire lath is answered≤500mm, assembly unit between wire lath, lap length is answered 〉=20mm, wire lath splicing place constant spacing is mutually answered≤250mm, upper and lower along keelson and flooring constant spacing should≤500mm, fixing in construction between keel and the wire lath should adopt dedicated fixed part or iron wire colligation.Referring to Figure 17.
When the assembling metal net, along keelson and vertical keel junction up and down, wire lath can be cut off, be fixed on along the keelson outside, the other parts wire lath inserts to be gone up in the keelson of lower edge.Also can all put into, and fix with iron wire along keelson.Referring to Figure 18 and 19.
Online perforate should utilize web plate can cut out the advantage of folding, cut the hole with the iron wire pincers and cut out the folding part branch, and wire lath folds in the hollow hole up or down up and down.Seal vertical up and down hole.At door and window hole, should adopt and strengthen the keel reinforcement.The door and window hole of width>600mm is used vertical keel and is reinforced.
Wire lath and keel erection sequence should extend to both sides from body of wall corner or hole beginning, guarantee that joint structure is complete.
3) heat preserving exterior wall inserts construction: referring to Figure 20, wire lath 1 connects the back and installs and reinforce, in the merging space of wire lath 1, carry out the filling of sound-insulating material 7, carry out the floating (cement: flyash: mortar=0.9: 0.1: 2.5) of whole cement-flying ash mortar layer 2 again.
4) plastering construction:
1, plaster and mainly be divided into three steps: the first step: fill out groove, second step: bottoming, the 3rd step: floating screed is wiped one's face.
2, web plate is filled out groove and adopted cement: flyash: the hanging of mortar=0.9: 0.1: 2.5 with pulp shooting machine or carry out the wire lath hanging by hand, mainly is that the web plate groove is filled and led up, and the unsuitable high ejecting plate face of mortar when filling out groove is in order to avoid mortar is blocked up when wiping one's face.
3, fill out trough end after, answer water seasoning to be no less than 24 hours, the bottoming of can plastering, adopt cement: flyash: the cement-flying ash mortar or the anti-crack fiber mortar (cement: flyash: sand: polyethylene anti-crack fiber=0.9: 0.1: 3: 0.003) do the middle level levelling, the manual plucking that flattens of mortar=0.9: 0.1: 3.
4, after bottoming finishes, answer maintenance to be no less than 24 hours, can carry out surface construction when putting down by no sharp trace, plastering mortar adopts cement: flyash: the hanging of mortar=0.9: 0.1: 2.5, or adopt cement, lime and yellow ground composite mortar, press mass ratio, cement: lime: yellow ground=1: 1: 4, the surface layer screed can adopt and whitewash technology, and paper strip mixed lime mortar is criticized flat.
5, must not carry out other operation in 7 days after the wall plaster, and the maintenance of should sprinkling water, maintenance every day should be no less than twice.
Bathe lavatory and equipment need establish support bracket with the room metope time, when single-point hanging force>800N, metope one side wire lath can be removed, cavity is filled out concrete, does load-bearing and supports.Can directly beat setscrew during as single-point hanging force<500N fixes.
Deformation of wall seam two ends are used vertical keel and are strengthened.Stitch wide 20mm, in fill out the PU blowing agent, the sealing of seam external application fluid sealant.
Can reach Coefficient K≤2.0w/m2K as in wall cavity, inserting fire-retardant heat-insulation materials such as mineral wool or poly-stupid ethene insulation slurry, the requirement of the residential building party wall of sound insulation value 〉=45db, fire resistance period 〉=2h can reach the requirement of exterior wall built-in heat insulation again, can save the cost of doing exterior-wall heat insulation.