CN110387974A - Assembly concrete building prefabrication external wall waterproof construction method - Google Patents
Assembly concrete building prefabrication external wall waterproof construction method Download PDFInfo
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- CN110387974A CN110387974A CN201910514525.XA CN201910514525A CN110387974A CN 110387974 A CN110387974 A CN 110387974A CN 201910514525 A CN201910514525 A CN 201910514525A CN 110387974 A CN110387974 A CN 110387974A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention patent relates to the waterproofs of assembled architecture, and in particular to a kind of assembly concrete precast facade waterproof construction construction method, including waterproof construction construction is carried out to precast slab vertical abutment joint, transverse joint；Including following operation: cleaning and dry seam；Polyethylene pole liner is filled in into seam；The abutment joint filling with sealant in the environment of 18~30 DEG C of temperature, relative humidity 59%~69%；Wherein, it first constructs to vertical abutment joint, arrives the crossover location of vertical abutment joint and transverse joint in construction, then construct to transverse joint；In carrying out transverse joint construction, flexible closed cell's polyethylene pole liner is filled between upper and lower two precast slabs in the minimum gap that the height formed after docking stitches in anti-bank structure.This construction method is few using consumptive material, construction is environment friendly and pollution-free, and the waterproof construction of construction is subsequent without frequent maintenance, saves a large amount of maintenance materials, also avoids the case where generating a large amount of building wastes.
Description
Technical field
The invention patent relates to the waterproofs of assembled architecture, and in particular to a kind of assembly concrete building prefabrication exterior wall is anti-
Water-bound construction method.
Background technique
Assembled architecture is also obtained more the characteristics of capable of saving vast resources, economic and environment-friendly, meet green building
Pay attention to, has also gradually formed a set of more mature assembly concrete major structure of construction construction system.However, to realize dress
With formula concrete construction functional completeness, there are one pith --- assembly concrete external wall waterproofs.
At present in assembly concrete major structure of construction, exterior enclosure wall generallys use cast-in-place node connection and is in the milk with sleeve
The connection types such as connection, wherein prefabricated board and cast-in-place node horizontal continuity, form vertical seam, and prefabricated board is in the milk by sleeve and is connected
Form horizontal joint, such a large amount of splicing seams, so that external wall waterproof is difficult to obtain guarantee.Meanwhile composite thermal-insulation external wall panel
Being not easily repaired property also considerably increase the difficulty of assembly concrete external wall treating seepage, be unable to satisfy it is current it is economical,
The requirement of energy conservation and environmental protection.Therefore, the key of assembly concrete external wall waterproof is that assembly concrete external wall is spelled
The sealing waterproof of seam.
Summary of the invention
Few using consumptive material, economic and environment-friendly assembly concrete wall waterproof structure that the object of the present invention is to provide a kind of,
A kind of assembly concrete building prefabrication external wall waterproof construction method constructed to the waterproof construction is additionally provided, with
It is expected that solving the above problems.
To achieve the goals above, present invention employs a kind of assembly concrete building prefabrication external wall waterproof structure constructions
Method, including waterproof construction construction is carried out to precast slab vertical abutment joint and precast slab transverse joint is prevented
Water-bound construction；Carrying out waterproof construction construction to two kinds of seams includes following operation:
S1. cleaning and dry precast slab seam；
S2. flexible closed cell's polyethylene pole liner is filled in into seam；
S3. the filling with sealant at abutment joint in the environment of 18~30 DEG C of temperature, relative humidity 59%~69%；
Wherein, it first constructs to vertical abutment joint, in the crossover location of construction to vertical abutment joint and transverse joint, to friendship
After vent sets filling with sealant, then construct to transverse joint；In carrying out transverse joint construction, by flexible closed cell's polyethylene
Foam pole liner is filled between upper and lower two precast slabs dock after the height that is formed stitch it is minimum in anti-bank structure
Gap in.
Since assembly concrete external wall waterproof is not easily repaired, and cost is very high, repairs bring building waste again
It will cause new environmental problem, therefore the construction quality of external wall waterproof sealant, directly determine the environmentally friendly degree of construction, be constructed into
The cost of this and later period maintenance.
Filling with sealant is optimal choosing at abutment joint in the environment of 18~30 DEG C of temperature, relative humidity 59%~69%
It selects, the too low caking property that can reduce sealant of environment temperature, because the surface moist of sealant reduces, and in the base of low temperature
It is likely to form frost and ice on material, influences the caking property of sealant.In the building surface of excessively high environment temperature and direct sunlight
On, the actual temperature of substrate surface may be more much higher than environment temperature, is influenced by high temperature, and the sagging resistance of sealant can become
Difference, curing time can accelerate, using the time and finishing the time can shorten, while be easy to produce bubble (different quality sealants
Sagging resistance differs greatly).The too low curing rate that can make sealant of relative humidity is slack-off, and excessively high relative humidity may be
Condensation film is formed on substrate surface, influences the caking property of sealant and substrate, it is also possible to so that sealant is formed bubble, above-mentioned
Filling with sealant under temperature, humidity environment has ensured the reliability of waterproof construction, so as to be not in reparation situation repeatedly.
Above-mentioned liner is set, sealant is isolated with concrete on the inside of cavity, sealant is avoided to form three faces bonding, shadow
Adhesive property is rung, even not set above-mentioned liner, then the colloid on the inside of glue-line can flow downward because of self weight, form upper-thin-lower-thick
The phenomenon that, even colloid or so and rear side with main body concrete bonding, if building experience seismic force effects after, three side bonds
Sealant easily by drawing crack, above-mentioned liner is set while playing the role of controlling waterproof gasket cement construction depth, guarantee
The poly- second of flexible closed cell is arranged in the reliability of sealant in this way in the minimum gap that the height of precast facade stitches in anti-bank structure
Alkene foam pole liner and filling with sealant, form that very reliable and service life is longer, has deformability or has elastic
Waterproof construction.The above-mentioned waterproof construction manufactured by this method extends outer compared to the waterproof construction of other assembled architectures
The case where service life of wall waterproof gasket cement saves construction cost and later period maintenance cost, reduces subsequent frequent reparation subtracts
The generation of building waste is lacked, use that is economic and environment-friendly, having saved the energy and consumptive material is improved and optimizes assembly concrete building
The construction of external wall waterproof sealant.
Further, equably being brushed in seam after cleaning seam base at abutment joint before filling with sealant
Primary coat liquid.
Generally there is preferable cementability with concrete substrate using waterproof gasket cement, it can brushing primary coat on this basis
Liquid, to cope with the complexity of construction site.Porous substrate can be strengthened by brushing primary coat liquid, and (such as cement concrete PC plate is squeezed
It is pressed into template) stability on surface, reduces influence of the dust to sealant adhesive property；Prevent by cohesive body ingredient (such as water,
Alkaline matter) surface migration is to sealant layer, to influence the performance of glue；Stablize the bonding of precast slab (PC plate) block
Property, prevent remaining PC plate release agent and sealant from acting on, to influence the performance of glue.
Further, filling with sealant, filling with sealant construction time are at abutment joint after primary coat liquid brushing 5min
T, t < 60min.After brushing primary coat liquid such as premature filling with sealant and the sealant construction time too long, primary coat liquid can be made
Its using effect of the performance being unable to fully.
Further, reserving cavity at the rear of flexible closed cell's polyethylene pole liner, make the sky of vertical abutment joint
Chamber forms drainage channel；Above-mentioned drainage channel is connected using the drainpipe of the oblique lower section in outlet end.Compared to other using independent
The drainage pipeline of setting, the present invention are used using the cavity of vertical abutment joint as drainage channel, keep precast slab and draining logical
Road self-assembling formation one, saves consumptive material, reduces cost, beauty, also reduces unnecessary external occupied space.
Further, tilting installation flexibility when above-mentioned drainpipe is arranged along drainpipe in the position of setting drainpipe and closing
Hole polyethylene pole is padded and is fixed, vertically seam injecting glue from top to bottom, and construction to more than drainpipe absolute altitude 95~
When 110mm, after filling the sealant of one layer of 9~11mm thickness on flexible closed cell's polyethylene pole liner of inclination installation,
Drainpipe is mounted on sealant, and it is firm to drainpipe to press downwards to drainpipe, then with sealant by drainpipe surrounding
Package is tight, and with upper and lower part sealant close proximity, finally extra sealant is rooted out.
Further, above-mentioned 20 ° of drainpipe gradient >, under the angle, drainage efficiency is higher.
Further, above-mentioned drainpipe interval 10~13m on vertical abutment joint is arranged.It can form every 10 in this way~
13m is a draining section, and the time for preventing water from flowing in cavity is too long, is immersed indoor.
Further, at abutment joint when filling with sealant, if same root glue-line is not finished into when secondary, in connector
Position is to 35~55 ° of oblique angles of finishing on the inside of glue-line, under the angle, to facilitate next joint treatment.
Further, after flexible closed cell's polyethylene pole liner is filled in seam, along seam two sides along viscous
It pastes and is compacted U.S. line paper；At abutment joint after filling with sealant, U.S. line paper is removed.The effect of U.S. line paper mainly controls glue-line
Width, guarantee wall crack it is beautiful and clean.
Further, being closed when flexible closed cell's polyethylene pole liner is filled in seam using at least two flexibilities
Seam is filled in after the liner binding of hole polyethylene pole, above-mentioned at least two flexible closed cell's polyethylene pole liners are parallel
Setting.
By the way that parallel flexible closed cell's polyethylene pole liner is arranged, knot on the inside of seam when ensureing sealant construction
Structure determines that inside molding is irregular when preventing sealant from constructing, and weak part occurs.
Here liner must not twist into twisted shape, when glue-line width is excessive, using in more liners filling glue-lines if
Twist into twisted shape or helical form, it will inside molding is irregular when sealant being caused to be constructed, and weak part easily occurs.
It selects more specification foam rods as liner according to glue-line width, or use more foam rods strapped side by side as padding,
And parallel placement flexible strip or foam rods.
The application is using a kind of assembly concrete wall waterproof structure, multiple prefabricated boards including being spliced into wall,
It is provided with waterproof layer at the transverse joint and vertical abutment joint of prefabricated board, above-mentioned waterproof layer is out of seam to successively including: outside
Sealant separation layer, above-mentioned sealant separation layer are embedded in seam simultaneously by least one by what seam inner wall squeezed
The flexible strip being extended along seam；
Sealant layer, the sealant layer are set to the opening of seam for blocking seam；
Above-mentioned prefabricated board lower end is hierarchic structure, which includes the first bottom end and higher than the second of the first bottom end
Bottom end；
Above-mentioned prefabricated board upper end is hierarchic structure, which includes the first top and higher than the second of the first top
Top；
Above-mentioned first bottom end is corresponding with the first top, the second bottom end and the second top are corresponding to form anti-bank structure；
Above-mentioned waterproof layer is set between above-mentioned first top and the first bottom end；
There are cavity in above-mentioned vertical abutment joint, at sealant separation layer rear, above-mentioned cavity forms vertical drainage channel,
Above-mentioned drainage channel is connected to transverse joint；
Above-mentioned drainage channel is linear structure, and the top of above-mentioned prefabricated board is provided with recessed on drainage channel extended line
Slot, above-mentioned groove are connected to drainage channel；
A gap become narrow gradually from outside to inside is formed between above-mentioned first bottom end and the first top, above-mentioned first bottom end is inclined
Tiltedly setting.
Above-mentioned anti-bank structure is set in the seam of upper and lower prefabricated board, prevents extraneous rainwater from can enter the room, is combining
Above-mentioned waterproof construction is set, makes this waterproof construction that there is excellent waterproof performance in this way, and use sealant and flexible strip
Combination, rupture wall where this waterproof construction will not when deformation occurs, allow the use with higher of this waterproof construction
Life and reliability avoids the maintenance repeatedly in later period, extremely meets the economy of present assembled architecture, the requirement of environmental protection.
By setting drainage channel and above-mentioned groove, this waterproof construction waterproof reliability with higher is allowed, i.e., either
Water flow is flowed into above drainage channel or is flowed into outside wall, and the setting of groove all allows water flow smooth, rapid can enter draining
Channel, and a gap become narrow gradually from outside to inside is formed between the first bottom end and the first top, although by the way that anti-bank is arranged
Water can be blocked in other than seam by structure, however, it was found that accumulated in the joint if fruit part water does not enter drainage channel,
If things go on like this impurity after water evaporation in water, compound can be gradually accumulate in the bottom surface of seam, and the deposition of these sundries can enter
In seam between sealant and liner, this chronic can have an adverse effect to sealant, or even allow between sealant and liner
Barrier action degradation failure and not noticeable, by will be formed between above-mentioned first bottom end and the first top one from outside to inside by
The narrow gap of gradual change, the first bottom end are obliquely installed, and extraneous water flow not only can be allowed to be not easily accessible in gap and prevent sundries
Deposition, will not be because of dimensional discrepancy also for conveniently allowing flexible strip to ensure its fixation that can be pressurized during filling in gap
There is fixed unstable situation.
Further, above-mentioned groove is located between the first top and the second top, extraneous water flow is stopped to flow into facilitate
Height stitch by water blockage in low seam, water flow directly passes through groove and enters in drainage channel.
Further, above-mentioned groove is funnel type.
Further, the size at the bottom end size > drainage channel of the above-mentioned groove of funnel type and groove connection, with
Prevent extra water from will not remain in height seam when falling into drainage channel from top.
Further, the lower end outlet of above-mentioned drainage channel is located on the outside of drainpipe place prefabricated board, with side
Just the water in prefabricated board is exported into outside.
Further, above-mentioned first bottom end is inclined relative to horizontal 5~15 °, gradient is excessive, is filling in above-mentioned flexibility
When it is inconvenient, it is more appropriate when the first bottom end is inclined relative to horizontal 5~15 °.
Further, the second bottom end of the above-mentioned prefabricated board being located above and the second of underlying above-mentioned prefabricated board
Be provided with filleting layer between top, in above-mentioned filleting layer seam to it is outer successively include be in the milk the bed of material and filled by elastic calking and
At elastic filleting layer.
Further, above-mentioned prefabricated board successively includes outer impeller, insulating layer and prefabricated board main body from outside to inside；Alternatively,
Above-mentioned prefabricated board successively includes prefabricated board main body and insulating layer from outside to inside；Above-mentioned insulating layer includes fire prevention rock wool layer and insulation board
Layer, above-mentioned fire prevention rock wool layer are arranged close to transverse joint.
Further, the overall width > for being stuffed into the above-mentioned flexible strip in seam connects in the width direction of seam
The difference < 5mm of slit width degree, the above-mentioned overall width of 2mm < and joint gap.
Further, the breadth depth ratio of above-mentioned sealant layer is (10:3)~(10:6), preferably 2:1.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partially will become apparent from the description below.Or practice through the invention
It solves.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to assist the understanding of the present invention, content provided in attached drawing and its
Related explanation can be used for explaining the present invention in the present invention, but not constitute an undue limitation on the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram for illustrating assembly concrete wall waterproof structure in embodiment；
Fig. 2 is for the partial enlargement diagram at A in explanatory diagram 1；
In the figure, it is marked as 1- flexible closed cell's polyethylene pole liner, 2- sealant layer, the first bottom end 301-, 302-
Second bottom end, the first top 401-, the second top 402-, the 5- grouting bed of material, 6- elasticity filleting layer, 7- prefabricated board outer impeller, 8-
The draining that insulating layer, 801- fire prevention rock wool layer, 802- insulation board layer, 9- prefabricated board main body, 10- vertical abutment joint cavity are formed is logical
Road, 11- drainpipe.
Specific embodiment
Clear, complete explanation is carried out to the present invention with reference to the accompanying drawing.Those of ordinary skill in the art are being based on these
The present invention will be realized in the case where explanation.Before in the attached Fig. 1 and 2 of combination, the present invention will be described, need to particularly point out
It is:
The technical solution provided in each section including following the description and technical characteristic in the present invention are not rushing
In the case where prominent, these technical solutions and technical characteristic be can be combined with each other.
In addition, the embodiment of the present invention being related in following the description is generally only the embodiment of a branch of the invention, and
The embodiment being not all of.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
About term in the present invention and unit.Term in description and claims of this specification and related part
" comprising " and its any deformation, it is intended that cover and non-exclusive include.
Referring to Fig.1 with 2, the present embodiment builds waterproof construction to the exterior wall that assembly concrete is built, and present embodiment is adopted
With a kind of assembly concrete wall waterproof structure, multiple prefabricated boards including being spliced into wall, the transverse joint of prefabricated board
Be provided with waterproof layer at vertical abutment joint, above-mentioned waterproof layer is out of seam to successively including: outside
Sealant separation layer, above-mentioned sealant separation layer are embedded in seam simultaneously by least one by what seam inner wall squeezed
The flexible strip being extended along seam, the flexible strip use flexible closed cell's polyethylene pole, and the flexible strip is as flexible strip
It (is hereinafter referred to as padded) using flexible closed cell's polyethylene pole liner 1；
Sealant layer 2, the sealant layer 2 are set to the opening of seam for blocking seam；
Above-mentioned prefabricated board lower end is hierarchic structure, and the prefabricated board lower end is including the first bottom end 301 and is higher than the first bottom end 301
The second bottom end 302；
Above-mentioned prefabricated board upper end is hierarchic structure, and the prefabricated board upper end is including the first top 401 and is higher than the first top 401
The second top 402；
Above-mentioned first bottom end 301 is corresponding with the first top 401, the second bottom end 302 and the second top 402 are corresponding anti-to be formed
Bank structure；
Above-mentioned waterproof layer is set between above-mentioned first top 401 and the first bottom end 301；
Sealant is filled into the reserved glue-line between prefabricated board, after solidification, forms a stage property between prefabricated board
There is the waterproof layer of deformability.If the liner 1 of not set sealant separation layer, that is, above-mentioned, the colloid on the inside of glue-line can be because of self weight
And flow downward, formed upper-thin-lower-thick the phenomenon that, even colloid or so and rear side with main body concrete bonding, if building pass through
After going through seismic force effects, the sealant layer 2 of three side bonds is easily by drawing crack.
Second top 402 of the second bottom end 302 and underlying above-mentioned prefabricated board of the above-mentioned prefabricated board being located above
Between be provided with filleting layer, in above-mentioned filleting layer seam to it is outer successively include being in the milk the bed of material 5 and to be filled by elastic calking
Elastic filleting layer 6.The prefabricated board that the present embodiment uses successively includes outer impeller 7, insulating layer 8 and prefabricated board main body from outside to inside
9；Alternatively, above-mentioned prefabricated board successively includes prefabricated board main body 9 and insulating layer 8 from outside to inside；Above-mentioned insulating layer 8 includes fire prevention rock wool
Layer 801 and insulation board layer 802, above-mentioned fire prevention rock wool layer 801 are arranged close to transverse joint.In the width direction of seam, filled in
Enter the overall width > joint gap of the above-mentioned liner 1 in seam, the difference < 5mm of the above-mentioned overall width of 2mm < and joint gap.On
The breadth depth ratio for stating sealant layer 2 is (10:3)~(10:6).
It can be sequentially included the following steps: when construction
One, preparation of construction
1, tool prepares, glue rifle, scraper, U.S. line paper, hard brush, soft brush, concrete cutting machine, sanding machine, electric pick, strength drum
Blower, trowel, hand hammer, chisel, planing tool etc..
2, material prepares, according to seam areas base material type, surrounding enviroment influence, season temperature and malformation position
Situations such as moving performance reasonably selects external wall waterproof sealant type and mating primary coat liquid；Different sizes are selected according to the difference of slit width
The round polyethylene item (the common polyethylene stick in market) of the soft closed pore of specification.
3, staffing selects the professional construction personnel having wide experience, can give training and take an examination when necessary.
4, technique preparation confides a technological secret to operating personnel.
5, template is leading, first makees template before formal construction, then carry out large-area construction.
Two, seam areas is checked
Since there is a certain error always in hoisting process for assembled architecture precast concrete exterior wall, piece quality
Can be variant, therefore must be mentioned to all transverse joints, perps, intersection are stitched, irregular slit be checked, be confirmed before large-area construction
Preceding solution construction Difficulties.
Three, construction surface is cleared up
1, seam outer edge has hanging
When having laitance on the outside of seam areas, laitance must be shoveled only with scraper, then cleaned up dust with soft brush, be guaranteed
It is smooth clean on the outside of seam.
2, seam outer edge has breakage
The losing fangle caused by precast concrete is in hoisting process because of collision, influences external wall waterproof sealant layer
2 construction, damaged part should be repaired in advance it is perfect, polishing, maintenance, after acceptance(check), waterproof sealing glue-line 2 can be carried out and applied
Work.When damaged very little, can directly be repaired with waterproof gasket cement.
3, there is sundries in seam
When there is the sundries such as remaining foaming agent, splice, gasket, flitch in precast concrete installation process in seam
When, sundries is cleaned out using tools such as electric pick, cutting machines, guarantees that the construction of foam filleting stick and waterproof sealing glue-line 2 is deep
Degree finally will stitch interior dust with strong blowing machine, loosening junk is cleaned out.
4, slit width is lack of standardization
When precast concrete because install it is lack of standardization caused by piece width it is inconsistent when, especially occur concentric reducer,
When stitching wide or narrow situation, glue-line should be subjected to manual amendment.
(1) when slit width is greater than 20mm, two foam rods are fixed side by side using adhesive tape, it, must not be by cystosepiment in filling seam
Twist into twisted shape use.
(2) when slit width is less than 10mm, glue-line width must be trimmed at least 10mm with cutting machine.Glue-line is answered after modifying
Dust is cleaned up with soft brush.
Four, liner is filled in
Mainly waterproof sealing glue-line 2 is isolated with concrete on the inside of cavity for the effect of liner 1, avoids waterproof sealing glue-line
2 form three faces bonding, influence adhesive property, while playing the role of controlling 2 construction depth of waterproof sealing glue-line.
Pad the round polyethylene item i.e. flexible strip (polyethylene stick) that 1 material preferably selects soft closed pore.It is general to select
The foam rods of specification 2mm bigger than glue-line or so should be equipped with mostly several various sizes of foams since glue-line is not of uniform size
Stick.After base cleaning is clean, foam rods are embedded in glue-line, and reserve the construction space of waterproof sealing glue-line 2, sealant
The breadth depth ratio of layer 2 is generally 2:1.Here 1 material of liner should not use foaming agent.When needing to fill in more liners 1, according to
Glue-line width selects the above-mentioned flexible strip of more specifications as liner 1, or is filled in by the way of more strapped side by side.
Five, U.S. line paper is pasted
The effect of U.S. line paper mainly controls the width of glue-line, guarantees that wall crack is beautiful and clean.U.S. line paper is generally selected
The material easy to stick easily torn is pasted along glue-line two sides, and compacting, when stickup should not interrupt U.S. line paper, in case it is beautiful to influence glue-line.It is viscous
When patch intersects seam, U.S. line paper suitably can be interrupted or be bent.
U.S. line paper cleans up location for paste dust using soft brush before pasting, in order to avoid be pasted not strongly.U.S. line paper is only limitted to
Used in operation in same day boundary of works area, under wet weather can gluing, can be in prefabricated board outer surface with U.S. line paper
It cements as reference.
When operator forgets to paste U.S. line paper, if prefabricated board outer surface is decorative cover, extra colloid should be shoveled, but not
Architectural surface must be damaged；If there are also postorder architectural surfaces for prefabricated board outer surface, should be before architectural surface is constructed cured
It constructs again after sealant external coating adhesive accelerant (PR106), it is ensured that coating effect is good, and architectural surface is avoided to fall off.
Six, brush primary coat
Waterproof gasket cement generally has preferable cementability with cement matrix, it is contemplated that the complexity of construction site.
Preferably to ensure waterproof gasket cement performance, seam base should conscientiously be cleaned before sealant construction and with hard brush in glue-line
One of primary coat liquid is equably brushed, primary coat liquid generally selects the special-purpose assorted product of waterproof gasket cement.
Primary coat liquid main function:
1, strengthen the stability on porous substrate (such as cement concrete PC plate, be squeezed into template) surface, reduce dust to close
The influence of sealing adhesive property.
2, it prevents by cohesive body ingredient (such as water, alkaline matter) surface migration to sealant layer 2, to influence the property of glue
Energy.
3, the caking property for stablizing precast slab (PC plate) block prevents remaining PC plate release agent and sealant from acting on,
To influence the performance of glue.
Seven, filling with sealant
Sealant should be in dry substrate, 18~30 DEG C of temperature, constructs under the cleaning ambient of relative humidity 59%~69%,
Preferably 24~26 DEG C of temperature, relative humidity 63%~65%.The too low caking property that can reduce sealant of environment temperature, because
The surface moist of sealant reduces, and is likely to form frost and ice on the substrate of low temperature, influences the caking property of sealant.In
On the building surface of excessively high environment temperature and direct sunlight, the actual temperature of substrate surface may be higher than environment temperature very
It is more, it is influenced by high temperature, the sagging resistance of sealant can be deteriorated, curing time can accelerate, use time and finishing time meeting
Shorten, while being easy to produce bubble.The too low curing rate that can make sealant of relative humidity is slack-off, and excessively high relative humidity may
Condensation film can be formed on substrate surface, influences the caking property of sealant and substrate, it is also possible to sealant be made to form bubble.It is close
Sealing should the brushing of primary coat liquid after five minutes, in 60 minutes construction finish, otherwise will will affect the using effect of primary coat liquid.
Primary coat liquid is not dry too long with regard to carrying out gluing construction or primary coat liquid and sealant construction gap, effectively makes more than primary coat liquid
Use the time；Alternatively, unqualified sealant is rooted out with suitable tools, then use abrasive machine when primary coat liquid is covered by foul or dust
Seam inner wall cleaning is clean, it is until exposing concrete surface, then with soft brush or ensilage dump blower that dust cleaning in glue-line is dry
Only, it is finally glued again in strict accordance with regulation.
1, it when horizontal joint injecting glue, constructs from either end to the other end along glue-line；
2, it when vertically stitching injecting glue, preferably constructs from top to bottom along glue-line；
3, it when right-angled intersection seam injecting glue, first constructs downwards along a perps, then constructs from infall to both sides；
It, should be oblique to 45 ° of finishing on the inside of glue-line in joint area perching knife if 4, same root glue-line is not finished into when secondary
Angle facilitates next joint treatment.
Eight, drainpipe is installed
There are cavity in vertical abutment joint, at sealant separation layer rear, above-mentioned cavity forms vertical drainage channel 10, on
Drainage channel 10 is stated to be connected to transverse joint；Drainage channel 10 is linear structure, and the top of above-mentioned prefabricated board, which is provided with, is located at row
Groove on 10 extended line of aquaporin, above-mentioned groove are connected to drainage channel 10；Above-mentioned groove is located at the first top and the second top
Between portion, to facilitate the height for stopping extraneous water flow to flow into stitch by water blockage in low seam, water flow is directly entered by groove
In drainage channel 10.Above-mentioned groove is funnel type.The bottom end size > drainage channel 10 of the above-mentioned groove of funnel type connects with groove
The size at logical place, to prevent extra water from will not remain in height seam when falling into drainage channel 10 from top.Above-mentioned draining is logical
Where the lower end outlet in road 10 is located at the drainage channel on the outside of prefabricated board, the water in prefabricated board is exported to outside with facilitating
Side.Above-mentioned first bottom end 301 is inclined relative to horizontal 5~15 °, and gradient is excessive, inconvenient when filling in above-mentioned liner 1,
It is more appropriate when the first bottom end 301 is inclined relative to horizontal 5~15 °.
When construction assembled concrete structure has cavity Drainage Design, a piece drainpipe should be installed every perps bottom
11, preferably it is arranged one every 12m along perps, horizontal direction spacing is not more than 9m, and specific interval can be determined by designing unit.
Material selection: drainpipe 11 must using can be compatible with waterproof gasket cement flexible material production, be preferably arranged insect prevention,
Rainwater-proof reflux unit.
Mounting means: when installation perps foam rods liner 1, in 11 position of drainpipe, inclination is installed a foam rods and (is formed
Low inside and high outside, the gradient is greater than 20 °) and it is fixed, U.S. line paper is pasted, brush primary coat liquid, injecting glue, construction extremely drain from top to bottom along glue-line
When the above 100mm of 11 absolute altitude of pipe, drainpipe 11 is mounted on specified liner 1, then is wrapped up 11 surrounding of drainpipe with sealant
Tightly, and with upper and lower part sealant close proximity, then with scraper extra sealant is rooted out.
Nine, it tears U.S. line paper
By glue-line modify it is smooth after, one end of Cong Meiwen paper is slowly torn, be careful not to destroy sealant corner.
Ten, late maintaining
After sizing, since sealant surface cure depth is insufficient, it must not press in 48 hours, must not be carried out in 28 days
Disturbance construction, stands maintenance, to guarantee the service life of sealant.It is detached from as accompanied sundries, sealant and wall in sealant
When, unqualified sealant is rooted out with suitable tools, then with abrasive machine existing all residuals in seam and around seam
Object is cleaned out, and cleans out dust in glue-line until exposing concrete surface, then with soft brush or ensilage dump blower, last tight
Lattice are glued again according to the rules.
It is filled with temperature, humidity control test about above-mentioned sealant abutment joint, above-mentioned sealant is placed in
In temperature and humidity control box, be arranged two concrete slabs and between gap is set, to gap filling with sealant after 28 days, solidifying
Sealant both ends stretched, test different temperatures, (the sealant layer drawing to 1cm thickness of the caking property of sealant under humidity
It stretches, tests gradually to elongate process, observed by tensile elongation and whether split between sealant and concrete slab from short to long
Mouthful be standard, be followed successively by it is poor-poor-in-it is good-excellent).
| Serial number | Temperature (DEG C) | Relative humidity | Caking property |
| 1 | 10 | 50% | In |
| 2 | 12 | 51% | In |
| 3 | 14 | 53% | In |
| 4 | 16 | 55% | In |
| 5 | 18 | 57% | It is good |
| 6 | 20 | 59% | It is good |
| 7 | 22 | 61% | It is good |
| 8 | 24 | 63% | It is excellent |
| 9 | 26 | 65% | It is excellent |
| 10 | 28 | 67% | It is good |
| 11 | 30 | 69% | It is good |
| 12 | 32 | 71% | It is good |
| 13 | 34 | 73% | In |
It is excellent to the abutment joint filling with sealant under 18~30 DEG C of temperature, the cleaning ambient of relative humidity 59%~69%
Choosing is 24~26 DEG C of temperature, and relative humidity 63%~65% is preferred plan.
Below to one index bed of certain assembly concrete residential building for, carry out construction economy benefit analyzed.
Scheme one: waterproof construction construction is carried out using this construction method method；
Scheme two: waterproof construction construction is carried out using conventional method (connecting using cast-in-place node connection and sleeve grouting).
Economic benefit statistical form (unit: member)
It can be obtained from upper table analysis, in the case where guaranteeing excellent product quality, whether instant economic benefit or long-range warp
Ji benefit, energy conservation consumption, scheme one are all far longer than scheme two.Scheme one " using this engineering method carry out waterproof gasket cement construction " with
Scheme two " carrying out waterproof gasket cement construction using conventional method " is compared, and there's almost no rework cost.A Measuring error week
Interim, scheme one is without maintenance, and the maintenance engineering amount of scheme two is determined by the operation level of construction personnel completely, can not be actively
Hanging basket need to be set up when controlling, and repairing, cuts old glue, destroys architectural surface, therefore maintenance cost is very high.Thus may be used
See, when using the construction of this engineering method, the reliability of external wall waterproof, economy is all effectively guaranteed, with the time
Passage, this benefit are more obvious.
The service life of sealant can be extended in social benefit this construction method, reduce maintenance frequency, to reduce pair
The influence of surrounding humanistic environment, social repercussion are good.The waterproof construction that this construction method is built, waterproof gasket cement reliable in quality, after
Phase is less prone to drainage.It reduces maintenance cost simultaneously, saved human and material resources, financial resources.
This construction method, waterproof construction implement use Mr. Yu's Housing Guarantee project, by using this construction method,
Waterproof construction can greatly improve the construction quality of assembly concrete external wall waterproof, and ensured its waterproof construction can
Not only make the maintenance frequency low, environmentally friendly by property, using this construction method, has saved a large amount of consumptive materials, reduced a large amount of energy consumption, is also real
Biggish economic benefit is showed.
Related content of the invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these
The present invention will be realized under condition.Based on above content of the invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
Claims (10)
1. assembly concrete precast facade waterproof construction construction method, which is characterized in that including vertical to precast slab
Seam carries out waterproof construction construction and carries out waterproof construction construction to precast slab transverse joint；Two kinds of seams are prevented
Water-bound construction includes following operation:
S1. cleaning and dry precast slab seam；
S2. flexible closed cell's polyethylene pole liner is filled in into seam；
S3. the filling with sealant at abutment joint in the environment of 18~30 DEG C of temperature, relative humidity 59%~69%；
Wherein, it first constructs to vertical abutment joint, in the crossover location of construction to vertical abutment joint and transverse joint, to intersection position
After setting filling with sealant, then construct to transverse joint；In carrying out transverse joint construction, by flexible closed cell's polyethylene
Pole liner is filled between upper and lower two precast slabs dock after the height that is formed stitch minimum seam in anti-bank structure
In gap.
2. assembly concrete precast facade waterproof construction construction method as described in claim 1, which is characterized in that abutment joint
Before locating filling with sealant, after seam base is cleaned in seam equably brushing primary coat liquid.
3. assembly concrete precast facade waterproof construction construction method as claimed in claim 2, which is characterized in that in primary coat
Filling with sealant at abutment joint after liquid brushing 5min, filling with sealant construction time are t, t < 60min.
4. assembly concrete precast facade waterproof construction construction method as claimed in claim 2, which is characterized in that in flexibility
Cavity is reserved at the rear of closed-cell polyethylene foam pole liner, and the cavity of vertical abutment joint is made to form drainage channel；Using outlet end
The drainpipe of oblique lower section connects the drainage channel.
5. assembly concrete precast facade waterproof construction construction method as claimed in claim 4, which is characterized in that setting institute
When stating drainpipe, pads and consolidate along drainpipe inclination installation flexible closed cell's polyethylene pole in the position of setting drainpipe
Fixed, vertically seam injecting glue from top to bottom closes when construction is to more than drainpipe absolute altitude 95~110mm in the flexibility of inclination installation
After the sealant for filling one layer of 9~11mm thickness on hole polyethylene pole liner, drainpipe is mounted on sealant, and right
Drainpipe presses downwards firm to drainpipe then with sealant that drainpipe surrounding package is tight and tight with upper and lower part sealant
It is close to connect, finally extra sealant is rooted out.
6. assembly concrete precast facade waterproof construction construction method as claimed in claim 5, which is characterized in that the row
20 ° of water pipe gradient >.
7. assembly concrete precast facade waterproof construction construction method as claimed in claim 4, which is characterized in that the row
Water pipe interval 10~13m on vertical abutment joint is arranged.
8. assembly concrete precast facade waterproof construction construction method as described in claim 1, which is characterized in that docking
At seam when filling with sealant, if same root glue-line when time being not finished into, in joint area to modifying 35~55 ° on the inside of glue-line
Oblique angle.
9. assembly concrete precast facade waterproof construction construction method as described in claim 1, which is characterized in that will be flexible
Closed-cell polyethylene foam pole liner is filled in after seam, along stickup and is compacted U.S. line paper along seam two sides；It is filled out at abutment joint
After filling sealant, U.S. line paper is removed.
10. assembly concrete precast facade waterproof construction construction method as described in claim 1, which is characterized in that will be soft
Property closed-cell polyethylene foam pole liner when filling in seam, using at least two flexible closed cell's polyethylene poles liner bindings
After fill in seam, at least two flexible closed cell's polyethylene poles liners are arranged in parallel.
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| CN111535461A (en) * | 2020-05-12 | 2020-08-14 | 中建六局水利水电建设集团有限公司 | Waterproof treatment process for assembly type building joint |
| CN111663669A (en) * | 2020-06-23 | 2020-09-15 | 成都建工集团有限公司 | Construction method of prefabricated outer wall abutted seam drain pipe of fabricated concrete building |
| CN112900501A (en) * | 2020-03-09 | 2021-06-04 | 南通市建设工程质量监督站 | Joint water stop device for concrete construction |
| CN112900736A (en) * | 2021-01-20 | 2021-06-04 | 中国建筑第八工程局有限公司 | Prefabricated external wall panel and mounting method thereof |
| CN114482113A (en) * | 2022-02-22 | 2022-05-13 | 中交(福州)建设有限公司 | Foundation structure with turnover full-space support and construction method thereof |
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| CN111535461A (en) * | 2020-05-12 | 2020-08-14 | 中建六局水利水电建设集团有限公司 | Waterproof treatment process for assembly type building joint |
| CN111663669A (en) * | 2020-06-23 | 2020-09-15 | 成都建工集团有限公司 | Construction method of prefabricated outer wall abutted seam drain pipe of fabricated concrete building |
| CN112900736A (en) * | 2021-01-20 | 2021-06-04 | 中国建筑第八工程局有限公司 | Prefabricated external wall panel and mounting method thereof |
| CN114482113A (en) * | 2022-02-22 | 2022-05-13 | 中交(福州)建设有限公司 | Foundation structure with turnover full-space support and construction method thereof |
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