CN102182323A - Process for dry laying of autoclaved aerated concrete blocks in low-latitude plateaus - Google Patents
Process for dry laying of autoclaved aerated concrete blocks in low-latitude plateaus Download PDFInfo
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- CN102182323A CN102182323A CN2011100330281A CN201110033028A CN102182323A CN 102182323 A CN102182323 A CN 102182323A CN 2011100330281 A CN2011100330281 A CN 2011100330281A CN 201110033028 A CN201110033028 A CN 201110033028A CN 102182323 A CN102182323 A CN 102182323A
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Abstract
The invention discloses a process for the dry laying of autoclaved aerated concrete blocks in low-latitude plateaus, comprising the steps of: carrying out base layer cleaning and leveling on the surface of brickwork; brushing an interface agent; laying the autoclaved aerated concrete blocks on a wall; plastering mortar for the first time; and plastering mortar for the second time. By means of the interface agent, watering on the laying surface is not required during the laying of the autoclaved aerated concrete filled brickwork, ash is directly plastered on the dry wall on which the interface agent is sprayed and watering and miniature conservation are not required; the blocks do not need watering so that the water is saved and the cracks on the wall surface during the use can be effectively prevented; and the process is suitable for the laying of all the non-load bearing brickworks which adopt autoclaved aerated concrete blocks.
Description
Technical field
The present invention is the dry method building construction technology of the steam pressurized concrete building block in a kind of suitable low latitudes high altitude localities.
Background technology
Autoclaved aerated concrete blocks drying shrinkage value is bigger, and the building block suction time has the characteristics that water absorption is big, fast back is slow earlier, the continuity drying shrinkage time is long.At present building by laying bricks or stones of Autoclaved aerated concrete blocks continued to use traditional building wall more, plastered and the construction technology of facing, because air-entrained concrete building block material water absorption rate height, and traditional construction process requirement build by laying bricks or stones finish after water seasoning, building block absorbs water in a large number, increased the moisture content of blockwork, blockwork shrinks in dry run and produces shrinkage crack, thereby causes a series of common quality defects such as blockwork cracking.
Summary of the invention
The present invention proposes the steam pressurized concrete building block in a kind of low latitudes plateau dry method building construction technology, especially is fit to construct under the low latitudes plateau climate condition, has avoided common quality defects such as blockwork cracking effectively, has favorable economic benefit and social benefit.Above-mentioned purpose of the present invention is achieved through the following technical solutions:
The steam pressurized concrete building block in a kind of low latitudes plateau dry method building construction technology is characterized in that construction sequence is:
One, base cleaning and levelling processing are carried out in the masonry panel surface;
Two, select for use and surpass 28 days, moisture content the length of time less than 15% steam pressurized concrete building block, all brush the HB-421 air-entrained concrete interface agent that market is bought at each face of building block, spread the motar of air-entrained concrete that market is bought at the end face of building block when building by laying bricks or stones, adopt the shove method to build wall by laying bricks or stones; The thickness of wall plastering mortar is in 15 ㎜, and smearing thickness earlier is the first floor mortar of 5mm～7mm, smears second layer mortar after waiting to solidify;
Add water in the operation instruction ratio after motar of air-entrained concrete stirs, the mechanical agitation time is no less than 3 minutes, consistency of mortar 70mm～100mm, and the mortar of mixing should use up in 2～3 hours, and dry and hard mortar can not use;
Three, the horizontal mortar joint plumpness will reach more than 90%, and width is 4mm; The perpends plumpness is not less than 80%, and width is 6mm.
During above-mentioned steps (two) was built by laying bricks or stones, building block after placing and going up wall was ajusted the disposable smoothing of building block, to being difficult to the perpends of roof pressure shove, should criticizing in advance at mortar joint mud jacking face and spread mortar, and splicing is built by laying bricks or stones again, to guarantee the bond quality at this position.
Should be when building by laying bricks or stones from the body of wall corner or the constructional column horse tooth trough begin.
This construction technology provided by the invention improves conventional wet building construction technology, owing to use interfacial agents, do not need to water when building steam-pressing aero-concrete infilled wall masonry by laying bricks or stones at bricklaying surface, directly on the metope of drying, plaster through spraying interface treating agent, moisture-keeping maintaining need not water, building block need not be watered, and both using water wisely can effectively prevent the cracking in the metope use again.Be applicable to the non-bearing masonry building construction that all adopt Autoclaved aerated concrete blocks.Help guaranteeing and improving the bulk strength of body of wall, and the common fault that effectively reduces blockwork generation sloughing of exterior wall, shrinkage crack, leaks.
The specific embodiment
Construction point:
1, base cleaning and levelling: the flooring at aerated concrete wall position is rejected the mortar that condenses, and cleaning is clean.Between bathing for the lavatory, balcony, outporch etc. and masonry contact site etc. often are subjected to the body of wall root of alternation of wetting and drying effect, build the same wall thickness of width, highly be not less than the C20 plain concrete wall pad of 0.2m; For other body of wall, build the wall pad that highly is not less than 0.2m by laying bricks or stones at its root with Autoclaved limesand brick.
2, building block is prepared: select for use to surpass 28 days building block the length of time, control its moisture content less than 15%, the HB-421 interfacial agents that brushing market is bought guarantees that each face all is coated onto, and holiday must not be arranged.
3, mortar preparation:
1) motar of air-entrained concrete of market purchase is concentrated and stirred: agitator should concentrate on the three unities, in order to avoid obscure with other ordinary mortars.
2) special-purpose motar of air-entrained concrete and medium sand, Portland cement (32.5 grades) situ configuration are used.Add water in the operation instruction ratio after stirring, it is excessive to add water, in order to avoid drying shrinkage causes cracking, the mechanical agitation time is no less than 3 minutes, consistency of mortar 70mm～100mm.The mortar of mixing should use up in 2～3 hours, and dry and hard mortar can not use.
4, building wall:
1) should carry out setting-out in advance, arrange brick, skin is set counts sign, height etc. is reserved at control gray seam thickness and door and window hole, lintel, tension rib position, top.
When 2) building by laying bricks or stones, directly with brushing the hacking masonry panel of interfacial agents, begin to carry out to a side from corner or location building block, interior exterior wall is built by laying bricks or stones simultaneously.On the end face of building block, spread motar of air-entrained concrete when building by laying bricks or stones, adopt " shove method " to build wall by laying bricks or stones, after building block is placed and is gone up wall, aim at marked rod, cooperate hammer to knock the disposable smoothing of a building block and ajust, to being difficult to the perpends of roof pressure shove, its mud jacking face should be criticized in advance and spread mortar, splicing is built by laying bricks or stones again, to guarantee the bond quality at this position.
3) the horizontal mortar joint plumpness will reach more than 90%, and width is preferably 4mm; Perpends should fill up, wipe off, and plumpness should be less than 80%, and width is preferably 6mm.
4) forbid water to dash the slurry cementation of fissures.Do not meet the requirements of, must fill up with masonry mortar, jointing, hollowing occurs in case plaster in the future.
5) body of wall is built at the bottom of beam, plate and should be stayed a fixed gap, treats that masonry shrinks stable back (resting at least 7 days), adopts supporting little building block shove method tiltedly to build, and its gradient is preferably about 60 °～75 °, and masonry mortar is full.
5, detail structure is handled:
1) tension rib of imbedding masonry inside should be provided with correctly, straight by designing requirement, sockets firmly with structural column, constructional column, forms whole.Should be when building by laying bricks or stones from the body of wall corner or the constructional column horse tooth trough begin.
2) the door and window hole installation constitution requires: interior exterior wall door and window hole both sides should pre-buried C20 pea gravel concreten piece, according to the spacing setting.The size of concrete block requires to determine according to building block modulus, door and window anchoring, or cast-in-situ concrete constructional column, with nylon crab-bolt or nailing plastic-steel, alumium alloy door and window connection ironware and precast concrete block are fixed then, fill with flexible material in the slit between frame and the masonry.
3) should construct by designing requirement in the hole of heavy door, when the design no requirement (NR), and should be along door both sides cast-in-situ concrete constructional column.For the piled bricks that directly links to each other with the concrete wall column, width is used reinforced concrete structural column instead during less than 200mm.
4) between blockwork and reinforced concrete post (wall): should reserve 10mm～15mm gap, treat that building wall is finished after, adopt the embedding of PU blowing agent plain.
6, other problems that should note:
When 1) aerated concrete building block is cut saw, should adopt special-purpose saw to cut saw, forbid to adopt cleaver to cut cutter.
2) hydroelectric line dark applies work, must treat body of wall finish and reach certain intensity after can carry out.
3) should use light-weight electric cutting machine and be aided with and manual engrave the groove device, forbid hammer-axe to pick cutter.Forbid in the construction on the gas concrete load bearing wall, arbitrarily to punch; Should consult with design department in the time of must punching.
4) groove depth should not surpass 1/3 of wall thickness, and the body of wall of wall thickness＜120 ㎜ must not two-way split pipe wire casing.The pipeline fluting should be advisable outside door and window hole 300 ㎜.
5) be embedded in pipeline in the cast-in-situ floor when bending into body of wall, should press close to metope and lay, and the vertical section height should be lower than the height of a skin building block.
6) groove after laying the line is used the motar of air-entrained concrete that mixes aerating concrete chip and is tamped, should be than metope nick 2 ㎜, mend flatly again with cementing agent, and paste the alkali-resistant glass fibre grid cloth that width is not less than 100 ㎜ along the flute length outside and strengthen.
7) during embedded iron parts, use electric drill and drill through required hole in building block on body of wall, ironware is bonding with water glass or structure glue in boring.Pass the ironware of body of wall and should do preservative treatment.
, plastering engineering
1) plastering construction should be after the pointing operation of wall head space crack is finished carries out in 7 days.
2) before the operation, should the metope base cleaning is clean, the mortar joint hole repairing is closely knit.
3) plaster before, bights, hole such as different materials matrix junction, door and window, concealed piping hole slot place and depth of plastering surpass 35mm etc. and locate to lay 〉=wide alkali-resistant glass fibre grid cloth of 250 ㎜ or hot-galvanized steel silk screen sheet.The slit application flexibility material packing of window sill, table tool case, switchbox, fire hydrant box etc. and masonry junction.
4) before the wall plastering, basic unit should clean and smear interfacial agents again after clean and handle, and interfacial agents thickness is preferably 2mm～3mm, maintenance in time after interfacial agents is handled, treat the slurry face condense reach certain intensity after, can do ash cake, floating screed according to floated coat thickness.The interfacial agents construction operation should carry out in the temperature environment more than 3 ℃.
5) wall plastering should be controlled in 15 ㎜, and answers layering, gradation to carry out.Smear first floor earlier as transition zone, every layer thickness is preferably 5mm～7mm, and one deck was plastered and carried out after the final set before following one deck floated coat should be treated.The layering of plastering meets Cha Chu, and the floated coat of construction should be thin slightly earlier, even combination, and connecing raft should be not too much, prevents that surface layer is rough and uneven in surface.Mat coat powder is answered while smearing with floating, the troweling of steel trowel.
6) door and window, the layering of various chamber sidewall are tamped and are smeared sternly, avoid frame side wall and masonry junction hollowing, crack.Need to beat around the framework of fluid sealant, should reserve the slit of dark 7mm, wide 5mm when plastering, so that filleting is played glue.
7) metope does not have obvious defects through entity detection, as hollowing, cracking, peeling etc., can carry out the processing of facing: the area ﹥ 30m of all continuous metopes
2The time establish partitioning slot, degree of depth 5mm avoids causing the crack to discharge stress.
8) metope criticize putty should branch at the bottom of, the face two procedures.Surface layer putty criticize scrape should treat bottom putty criticize scraping the construction finish and drying after can carry out.Should polish flat after the surface layer putty drying and can carry out coating or wallpaper construction.
9) before paving furring tile or the face brick, should base cleaning is clean, and completely brush waterproof agent one.During stickup, with dentation mud plate or cementing agent is spread upon metope with other instruments or orderly paving is carried out by scheme in the ceramic tile face brick back side, paving is after 24h carries out the filleting operation.
10) metope is done veneer coating, should treat that masonry reaches under the air dry state to carry out.Exterior wall finish must not directly be hung stone material on aerated concrete masonry.Decoration of exterior wall such as curtain wall should be carried out by relevant design document and relevant regulations.
Claims (3)
1. the steam pressurized concrete building block in low latitudes plateau dry method building construction technology is characterized in that construction sequence is:
(1), base cleaning and levelling processing are carried out in the masonry panel surface;
(2), select for use and surpass 28 days, moisture content the length of time less than 15% steam pressurized concrete building block, all brush the HB-421 air-entrained concrete interface agent that market is bought at each face of building block, spread the motar of air-entrained concrete that market is bought at the end face of building block when building by laying bricks or stones, adopt the shove method to build wall by laying bricks or stones; The thickness of wall plastering mortar is in 15 ㎜, and smearing thickness earlier is the first floor mortar of 5mm～7mm, smears second layer mortar after waiting to solidify;
Add water in the operation instruction ratio after motar of air-entrained concrete stirs, the mechanical agitation time is no less than 3 minutes, consistency of mortar 70mm～100mm, and the mortar of mixing should use up in 2～3 hours, and dry and hard mortar can not use;
(3), the horizontal mortar joint plumpness will reach more than 90%, width is 4mm; The perpends plumpness is not less than 80%, and width is 6mm.
2. building construction technology according to claim 1, it is characterized in that: during above-mentioned steps (two) is built by laying bricks or stones, after building block is placed and is gone up wall, the disposable smoothing of building block is ajusted, to being difficult to the perpends of roof pressure shove, should criticize in advance at mortar joint mud jacking face and spread mortar, splicing is built by laying bricks or stones again, to guarantee the bond quality at this position.
3. building construction technology according to claim 1 is characterized in that: should be when building by laying bricks or stones from the body of wall corner or the constructional column horse tooth trough begin.
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| CN2011100330281A CN102182323A (en) | 2011-01-31 | 2011-01-31 | Process for dry laying of autoclaved aerated concrete blocks in low-latitude plateaus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321340A (en) * | 2013-07-09 | 2013-09-25 | 嘉兴市博宏新型建材有限公司 | Construction mortar for aerated block masonry |
| CN106013509A (en) * | 2016-07-22 | 2016-10-12 | 湖北神州建材有限责任公司 | Dry-method construction method for high-performance autolaved aerated concrete block wall |
| CN106049887A (en) * | 2016-06-17 | 2016-10-26 | 广州发展环保建材有限公司 | Grout dry building method for high-precision building blocks |
| CN110644626A (en) * | 2019-08-22 | 2020-01-03 | 金鹏建筑产业有限公司 | Green and environment-friendly building construction method |
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| CN1687548A (en) * | 2005-05-18 | 2005-10-26 | 何玉成 | Dry-process construction method for new type wall body of building blocks |
| CN101691290A (en) * | 2009-08-25 | 2010-04-07 | 江其东 | Mortar for building and plastering PTB aerated concrete blocks and using method thereof |
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2011
- 2011-01-31 CN CN2011100330281A patent/CN102182323A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1687548A (en) * | 2005-05-18 | 2005-10-26 | 何玉成 | Dry-process construction method for new type wall body of building blocks |
| CN101691290A (en) * | 2009-08-25 | 2010-04-07 | 江其东 | Mortar for building and plastering PTB aerated concrete blocks and using method thereof |
Non-Patent Citations (4)
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| 全国一级建造师执业资格考试用书编委会: "《建筑工程与实务（第二版）》", 30 April 2010, 中国建筑工业出版社 * |
| 徐金豪: "蒸压砂加气混凝土干法施工成套技术的应用", 《山西建筑》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321340A (en) * | 2013-07-09 | 2013-09-25 | 嘉兴市博宏新型建材有限公司 | Construction mortar for aerated block masonry |
| CN106049887A (en) * | 2016-06-17 | 2016-10-26 | 广州发展环保建材有限公司 | Grout dry building method for high-precision building blocks |
| CN106013509A (en) * | 2016-07-22 | 2016-10-12 | 湖北神州建材有限责任公司 | Dry-method construction method for high-performance autolaved aerated concrete block wall |
| CN110644626A (en) * | 2019-08-22 | 2020-01-03 | 金鹏建筑产业有限公司 | Green and environment-friendly building construction method |
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Application publication date: 20110914 |