Exterior wall steam-pressing aero-concrete self-insulation system same material heat bridge processes construction method
Technical field
The present invention relates to a kind of external wall construction technology is and in particular to a kind of exterior wall steam-pressing aero-concrete self-heat conserving system
System same material heat bridge processes construction method.
Background technology
Building energy consumption, transportation energy consumption and industrial energy consumption are three big key components of social total energy consumption.Wherein build
Build energy consumption to include:Construction material producting energy, construction material transport can, house build and maintenance process in energy and build
Build the constructing operation energy consumption during use.In the Life cycle of building, the energy that construction material and building course are consumed
Source typically only accounts for the 20% about of its total energy consumption, and most of energy resource consumption occurs in the middle of building running.Therefore,
Building energy conservation is increasingly subject to people's attention.
Limited by economy and historical conditions, building energy conservation has different implications and interior in different social development periods
Hold.Definition to building energy conservation is at present for China:The planning of building, design, newly-built, renovating and enlarging, transform or used
Cheng Zhong, executes energy conservation standard, using energy-saving technology, technique, equipment, material and product, improves thermal and insulating performance and adopts
Warm heat supply, air conditioner refrigerating heating efficiency, strengthen the operational management of building energy consumption system, using regenerative resource, are protecting
On the premise of card indoor thermal environment quality, reduce heat supply, air conditioner refrigerating heats, illuminates, the energy consumption of hot water supply, it is meant that
In building rationally using with effectively use the energy, improve constantly the utilization ratio of the energy.
Building energy conservation is typically realized by following technological approaches:
(1) Technologies in Construction Planning Design energy-conservation.Architect and energy analysis expert, environmentalist, Facilities Engineer, Structural Engineering
Teacher is fitted close, and designs low energy building, zero energy consumption building and green building using brand-new design concept.Can be by rationally
The measures such as building site, appropriate design external environment condition, appropriate design building shape are selected to realize.
(2) improve building user's energy consumption efficiency.Here it is primarily referred to as in the heating built, air-conditioning and ventilation, electrical lighting
Etc. aspect take measures, such as using energy-efficient lamp, effective warming air conditioning system etc..At present should take most economical of China and have
The measure of effect is the heat-insulating property improving space enclosing structure material, the materials for wall researching and developing new economy and energy-conservation.For Xia Redong
The special environment of cryogenic region, should consider Winter protection, take into account that summer is heat-insulated again, reduce heating, the cooling energy consumption of building.
(3) take conservation measures in Architectural Construction particularly building enclosure.Architectural exterior-protecting construction include exterior wall, roof,
The parts such as door and window, heat-barrier material, its design has basic impact to building energy consumption.
Building enclosure includes the concrete beam and column having been inserted into body of wall, the concrete rib in body of wall and roof boarding, roof eaves
Mouthful, window frame and outside corner of wall etc., two dimension and the three-dimensional temperature field of complexity can be formed at these positions.It is referred to as in thermal technology's code of China
For " heat bridge ".
During " 12 ", China has formulated energy conservation standard, and its target is heating energy consumption in local house universal design
On the basis of energy-conservation 65%.In order to realize this target, architectural exterior-protecting construction design takes a series of conservation measures, such as adopts
Vacuum glass, Outer Wall is incubated, basement roof patch styrofoam etc..Using these methods, by the consumption of common building enclosure
Heat decreases, but is greatly increased by the heat consumption of heat bridge.This is because after using Insulation inside and outside exterior wall, heat bridge week
The thermal resistance enclosing building enclosure all increases so that the partial heat of building enclosure flows through from heat bridge around entering.Divide according to relevant information
Analysis, in traditional architecture, heat bridge energy consumption accounts for the 5% about of building total energy consumption, and then may be used by the energy consumption of heat bridge in energy saving building
Reach 25% about.
Mix in brick, in the body of wall such as architectural structure system or brick wall, blockwork, composite wall and composite plate such as building block and sheet material,
Heat bridge can account for 15%~35% by area statistics.Because heat bridge position internal surface temperature is relatively low, at this, temperature is less than dew point temperature
When, vapor will condense in its surface, forms condensation, hereafter the dust of in the air is easily stained with, make heat bridge portion faces by
Gradual change is black, thus long bacterium, mouldy.The more prominent position of heat bridge producing ratio, even can drop down water in cold, the life to people and
Health has a significant impact.
In sum, a kind of effective reduce heat bridge heat consumption and improve the construction method of heat bridge position presentation quality to closing weight
Will.
Content of the invention
The present invention provides a kind of exterior wall steam-pressing aero-concrete self-insulation system same material heat bridge to process construction method, to solve
Certainly building heat bridge position heat consumption is big at present, the problem of presentation quality difference.
The present invention program is as follows:Exterior wall steam-pressing aero-concrete self-insulation system same material heat bridge processes construction method, bag
Include following steps:
1)The concrete base layer at cleaning heat bridge position;
2)Snap the line, carries out typesetting according to design requirement, the thin building block specification of steam-pressing aero-concrete and quantity, and horizontal stroke is put in segmentation
Line and vertical line;
3)The moistening of the thin building block of steam-pressing aero-concrete, in order that the thin building block of steam-pressing aero-concrete and heat bridge position is mixed
The laminating of solidifying soil matrix layer is tightr, and the thin building block of steam-pressing aero-concrete moisture content before stickup is 10~15%, and immersed depth is 8~
10mm;
4)The moistening of the concrete base layer at heat bridge position;
5) interface processing, scratches the thick interfacial agents of 2~4mm to the concrete base layer at heat bridge position, carries out interface
Reason;
6)Paste the thin building block of steam-pressing aero-concrete, the thin building block of steam-pressing aero-concrete, binding agent are scratched using binding agent
Blade coating thickness is 8~9mm, and the thin building block of steam-pressing aero-concrete is by the exterior wall armored concrete lines location of every floor plate absolute altitude
Start to paste from bottom to top, and lateral arrangement, in order to more attractive in appearance, the thin building block of steam-pressing aero-concrete of upper and lower row is mutually wrong
Open;
7)Check flatness and the mortar joint of the thin building block of steam-pressing aero-concrete, with jointing, wipe clean surface;
8)To the steam-pressing aero-concrete having posted, thin building block carries out maintenance;
9)Steel wire is completely spread on the thin building block of the steam-pressing aero-concrete having posted, the lap of splice of steel wire is more than or equal to
150mm;
10)Secondary interface is processed, and the concrete base layer at moistening heat bridge position is so as to moisture content is 15~17%, to steel wire
Surface scratches 3~5mm thickness interfacial agents and carries out interface processing;
11)Cement mortar is constructed;
12)Finished product protection, covers to adopting bar cloth at easy pollution.
Beneficial effects of the present invention:The present invention passes through for thin for steam-pressing aero-concrete building block stickup to be anchored at building enclosure knot
Outside the concrete base layer of structure heat bridge, as the heat-insulation layer of heat bridge position concrete base layer, the heat conductivity of this heat-insulation layer is less than
0.12, cubic compressive strength be more than or equal to 2.8MPa, this heat-insulation layer have excellent heat insulation property, durability, weather resisteant,
Noninflammability and safety, the heat bridge position through this PROCESS FOR TREATMENT, meet building energy conservation requirements, and can keep for a long time building
The presentation quality at heat bridge position.
The heat-insulation layer being formed through this method, with exterior wall bonding powder polystyrene granule insulating system and exterior wall expansion polyphenyl plate thin-coat plaster
Heat insulation system reasonable using period compares for 25 years, the reasonable using period of heat-insulation layer can be made to bring up to Architectural Structure Design and use year
Limit more than 50 years, not only solve other insulation material durability also can not overcome with the consistent problem of Building life cycle simultaneously
Other insulation material fire lines and the poor shortcoming of safety.
The scope of application:This construction method is applied to the exterior walls such as multilamellar, high-rise and high-rise house, office, commercial building
Heat-insulation system.
Further, in step 6)In, form horizontal mortar joint and vertical mortar joint, water between the thin building block of each steam-pressing aero-concrete
Flat joint full degree of mortar at bed joint is not less than 90%;Vertical mortar joint full degree of mortar at bed joint is not less than 80%.Thickness of mortarat bed joint is 8~12mm;
Vertical mortar joint width is 6~10mm.
Further, in step 9)In, steel wire is hot-galvanized steel silk screen, and hot-galvanized steel silk screen smooths clean and tidy, even structure
Firm, good integrity, steel wire and the thin building block of steam-pressing aero-concrete are fixed on the concrete of heat bridge by plastic expansion anchoring bolt
In basic unit, firmly, the distance between each plastic expansion anchoring bolt is less than or equal to 400mm for anchoring.
Further, in step 11)In, cement mortar construction technology is:Smear first cement mortar bottoming plucking first, treat
After the completion of first bottoming mortar, first bottoming mortar of moistening, smear second cement mortar bottoming, mark track, treat second
After the completion of road bottoming mortar, moistening second bottoming mortar, smear the 3rd road cement mortar as surface layer, the construction of surface layer mortar completes
Afterwards, water seasoning, comprises methocel solution and polypropylene fibre solution in cement mortar, can prevent from building heat bridge position guarantor
The problems such as plaster cracking outside warm layer, seepage, greatly improve safety and durability and the coat of plaster of heat bridge position heat-insulation layer
Cracking resistance and anti-permeability performance.
Further, a length of 400mm of the thin building block of steam-pressing aero-concrete, a width of 300mm, thick is 60mm, and material is lighter, and
Cut the thin building block of steam-pressing aero-concrete beneficial to block.
Further, in order to meet the requirements of this construction method, binding agent that the present invention uses and interfacial agents are poly-
Compound dry powder and mortar.Polymer dry powder mortar resistance to water >=0.5 MPa, tensile strength >=0.6 MPa, compression shear strength >=0.6
MPa, freeze-thaw resistance >=0.5.
Brief description
Fig. 1 is the process chart of the embodiment of the present invention;
Fig. 2 is the stickup typesetting figure of the thin building block of steam-pressing aero-concrete in the embodiment of the present invention;
Fig. 3 is that the arrangement of the thin building block of steam-pressing aero-concrete, steel wire and plastic expansion bolt in the embodiment of the present invention is shown
It is intended to;
Fig. 4 is the heat bridge position structural map after embodiment of the present invention construction.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description:
As shown in figure 1, the present embodiment construction method step is as follows:
First, base cleaning
The floating sand on cleaning heat bridge position concrete base layer surface and chip, block up the screw rod through walls closing template with foaming agent
Hole, pours outrigger reserved opening with the pea gravel concreten of same wall concrete grade.To local, irregular concrete walls or beam mix
Solidifying soil carries out picking to be beaten, and uses 1:1 cement fish rice stone carries out levelling to metope recess.
2nd, snap the line
Typesetting is carried out according to design requirement, the thin building block specification of steam-pressing aero-concrete and quantity, and segmentation is put horizontal line and erected
Line.For on post, wall, beam paste the thin building block of air entrained concrete should accomplish to lead to line up and down it is ensured that paste after metope perpendicularity and
Flatness.
3rd, air entrained concrete thin building block moistening
Exterior wall air entrained concrete thin building block sticking construction a few days ago, is determined special messenger and is poured the thin building block of water-wet air entrained concrete, protects
Before card air entrained concrete thin building block stickup, in the range of 10~15%, immersed depth is preferably 8~10mm to moisture control.
4th, the concrete base layer moistening at heat bridge position
Exterior wall air entrained concrete thin building block sticking construction the previous day, determine special messenger's abundant moistening concrete base layer, remove metope
Dust.
5th, an interface processing
External Wall concrete base layer completely scrapes interfacial agents, carries out interface processing, and its thickness is 2mm.Aerating should be pasted from each
Start completely to scrape interfacial agents before the thin building block of concrete, area should not be too big, the area meeting 2 hours stickups is advisable.
6th, paste the thin building block of steam-pressing aero-concrete, that is, paste Aerated Concrete block.
The thin building block specification of steam-pressing aero-concrete is 400mm × 300mm × 60mm.Completely scraped in aerating using adhesive special
It is desirable to scrape full, smooth in the thin building block of concrete, adhesive thickness is 8mm, and during beating, power is moderate.It is illustrated in figure 2 this reality
Apply the typesetting figure of the thin building block of a steam-pressing aero-concrete, wherein, the reference in accompanying drawing is:The thin building block of steam-pressing aero-concrete
1 and support the thin building block of steam-pressing aero-concrete 1 concrete lines 2.
The thin building block of steam-pressing aero-concrete is pasted choosing ear position by the exterior wall concrete at every floor plate absolute altitude, under oneself
And on, laterally paving in the horizontal direction, the thin building block of the air entrained concrete often arranged 1/2 plate that mutually staggers is long.In rotation angle position, up and down
, straight joint not in rotation angle position in vertical abutment joint interconnection between row's autoclave aerated concrete building block.Mortar joint is horizontal flat
Vertically, mortar is full, and horizontal mortar joint full degree of mortar at bed joint is not less than 90%;Vertical mortar joint full degree of mortar at bed joint is not less than 80%.Level ash
Seam thickness is 8~12mm;Vertical mortar joint width is 6~10mm.
The dry density of the thin building block of steam-pressing aero-concrete and comprcssive strength
The dry shrinkage of the thin building block of steam-pressing aero-concrete and heat conductivity
7th, after reaching certain time, check adjustment autoclave aerated concrete building block flatness and mortar joint, with jointing,
Wipe clean surface.
8th, after 24 hours, maintenance is carried out to the autoclave aerated concrete building block having posted.
9th, layout drawing as shown in Figure 3, the reference in accompanying drawing is:The thin building block of steam-pressing aero-concrete 1, support are steamed
The concrete lines 2 of the thin building block of pressing aero-concrete 1, steel wire 3 and plastic expansion bolt 4.Steam pressurized mixed posted
Coagulate and completely spread hot-galvanized steel silk screen in native thin building block:For ensureing construction quality and using safety, steam pressurized mixed in insulating layer of external wall
Solidifying earth building blocks basic unit completely spreads 0.9 × 12.5 × 12.5 hot-galvanized steel silk screens.Mixed in aerating with the drill bit of diameter 10mm using electric hammer
Solidifying thin piece of upper hole boring 120mm depth of soil, is sent in the hole plastic expansion anchoring bolt, tightens holdfast with screwdriver, fixing steel wire, its
Spacing cannot be greater than 400mm, and steel wire is tightened, and the lap of splice is more than or equal to 150mm.
Tenth, according to design thickness, External Wall screed-coat carries out hanging vertical, set side and looks for rule.
Ten first and second interface processing:Fully moistening basic unit makes moisture content reach 15~17%, and steam-pressing aero-concrete is built
Block basic unit steel wire net surface is completely scraped 3mm thickness special interface agent and is carried out interfacial agents process.
12, cement mortar construction
Smear first 1 first:2 cement mortar bottoming pluckings, plucking adopts horizontal mode, and its thickness is 9mm;Treat first
After bottoming mortar completes 6 hours, first bottoming mortar of moistening, carry out second 1:2 cement mortar bottoming, mark track, its
Thickness is 9mm;After second bottoming mortar completes 6 hours, moistening second bottoming mortar, carry out 1:2 cement screedns
Construction, strikes off with 2.5m aluminium alloy chi a tree, used in making timber for boats and uses wooden sand plate to sand flat whole, and THICKNESS CONTROL is 7mm.Add methyl fine in cement mortar
The plain solution of dimension(Cement:River sand:Methocel solution=1:2:0.33)And polypropylene fibre.Methocel solution ratio is
150kg water adds 1kg methylcellulose, and every cubic meter of water cement mortar adds 1kg polypropylene fibre.It is little that the construction of surface layer mortar completes 24
Shi Hou, takes water seasoning, and maintenance natural law is no less than 7 days.
13, finished product protection:The autoclave aerated concrete building block and cement screedn having pasted is protected, fixed
The place of special messenger's nurse and easy pollution adopts color-bar cloth to cover.
By the heat-insulation layer that this construction technology is formed have excellent heat insulation property, durability, weather resisteant, noninflammability and
Safety;Coat of plaster has stronger crack resistance and impermeability;Aerocrete as heat isolating material lightweight used, environmental protection, making
Convenient, build and cut easily, and price relatively low it is easy to control cost;Construction technology is simple, and convenient construction, due to single-block area
Ratio is larger, and speed of application is also than very fast.
Used in the present embodiment, binding agent and interfacial agents are polymer dry powder mortar.Polymer dry powder mortar resistance to water
>=0.5 MPa, tensile strength >=0.6 MPa, compression shear strength >=0.6 MPa, freeze-thaw resistance >=0.5.
As shown in figure 4, for the present embodiment construction after heat bridge position structural map, the present embodiment taking build rod structure as a example,
Reference in accompanying drawing is respectively:Armored concrete lines 2, plastic expansion bolt 4, post 5, floor 6, exterior wall dividing joint 7.This
Heat bridge position construction on embodiment post is followed successively by:Concrete base layer;The thick interfacial agents of 2mm;The thick binding agent of 8mm;60mm is thick
The thin building block layer of steam-pressing aero-concrete;Steel screen layer;3mm thickness interfacial agents;The thick base course of cement mortar of 9mm;9mm solid cement sand
Slurry surface layer;The thick cement screedn of 7mm.
Above-described is only the preferred embodiment of the present invention it is noted that for a person skilled in the art,
On the premise of without departing from present configuration, some deformation can also be made and improve, these also should be considered as the guarantor of the present invention
Shield scope, these are all without the effect affecting present invention enforcement and practical applicability.