CN103790386A - Method for controlling cracks in process of plastering aerated concrete block wall - Google Patents

Method for controlling cracks in process of plastering aerated concrete block wall Download PDF

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Publication number
CN103790386A
CN103790386A CN201410021664.6A CN201410021664A CN103790386A CN 103790386 A CN103790386 A CN 103790386A CN 201410021664 A CN201410021664 A CN 201410021664A CN 103790386 A CN103790386 A CN 103790386A
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CN
China
Prior art keywords
aerated concrete
plastering
control
building block
crack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410021664.6A
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Chinese (zh)
Inventor
李健
秦瑛
王晓颖
王惠琴
贾亮
杨先伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG GUANGXIN CONSTRUCTION GROUP Co Ltd
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LUOYANG GUANGXIN CONSTRUCTION GROUP Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUOYANG GUANGXIN CONSTRUCTION GROUP Co Ltd filed Critical LUOYANG GUANGXIN CONSTRUCTION GROUP Co Ltd
Priority to CN201410021664.6A priority Critical patent/CN103790386A/en
Publication of CN103790386A publication Critical patent/CN103790386A/en
Pending legal-status Critical Current

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Abstract

The invention provides a method for controlling cracks in the process of plastering an aerated concrete block wall. The method is easy to master and use and aims to solve the common quality problems of cracking, hollowing and the like, wherein the problems easily occur in the wall plastering process. In order to solve the technical problems, by the adoption of the technical scheme, the method mainly comprises the following measures of (1) structural control over the aerated concrete block wall, (2) material using control over the aerated concrete block wall, and (3) process control over plastering. Through the measures, the cracks of the wall are eliminated.

Description

A kind of control method that adds concrete wall of building blocks cracks in plaster
Technical field
The present invention relates to the control method in a kind of wall plastering crack, especially a kind of control method that adds concrete stripping and slicing wall plastering crack.
Background technology
Aerated concrete building block is a kind of novel wall material, and the raw material of building block are mainly cement, lime, sand, flyash etc., belongs to cement concrete product, have water/binder ratio large, cementitious matter is many, easily imbibition, the features such as dehydration is shunk, and intensity is low, water absorption rate is high, shrinkage strain is large.Differ with the shrinkage strain of building wall mortar own, intensity difference is apart from large again, be subject to temperature deformation also different, add after aerated concrete building block is produced and can not guarantee to re-use after 28d, the shrinkage strain of material itself does not discharge completely, after building a wall, still continue shrinkage strain, this is the main reason that body of wall produces crack.Aerated concrete building block because of its have energy-conservation, save land, pollute the plurality of advantages such as few, by China's building energy conservation, environmental protection and wall reform are praised highly, and be widely used on civil high-rise buildings with industrial premises on.But in wall plastering process, be easy to occur the common quality defect such as crack, hollowing, give user in follow-up finishing, perception and cause psychologically harmful effect, in Fen family, the residential houses course of receiving of particularly undertaking the construction of in recent years, the complaint that relates to cracking of wall surface is more and more, has substantially accounted for the more than 80% of Customer Complaint rate.
Summary of the invention
To be easy to occur the common quality defect such as crack, hollowing in order solving in wall plastering process, to be invented and proposed a kind of aerated concrete building block wall plastering method for controlling crack that is easy to grasp and uses.
The technical solution adopted for the present invention to solve the technical problems mainly comprises following measure:
One, the structure control of aerated concrete building block body of wall;
Two, the control that aerated concrete building block materials for wall uses;
Three, plastering technique control measure;
Eliminate the crack of metope by above measure.
Above-mentioned measure one comprises the following aspects: 1,, for span and the large frame construction of floor height, design drawing all requires to arrange constructional column and collar tie beam.But for drawing no requirement (NR) person, should be by following setting: establish the little collar tie beam that one 120mm is thick, 240mm is wide every l rice is high in the horizontal direction, in vertical direction, establish a vertical constructional column, concrete post, wall and Aerated Concrete junction in addition, the high tension rib of establishing the long l000mm of 2 φ 6 muscle of every 500mm every 3 meters.2, when building wall, bottom 20cm is high, and part must adopt solid block to pave, and then builds the aerated concrete building block of B06M35.3, the modulus of building block and embedded bar spacing, can adopt chemically-planted steel bar technology, guarantees that assembling reinforcement is accurate, gives full play to anchor and draw the effect of stress of reinforcing bar.4, aerated concrete building block wall was built to beam when bottom, should leave a fixed gap, fully sank after stable and mended and build jam-packed again until body of wall, then carried out plastering construction.
Above-mentioned measure two comprises the following aspects: 1, optimize mix ratio of mortar.Selecting of motar should adapt with aerated concrete building block material, adopts pulverized fuel ash cement lime mortar more effective than ordinary mortar.Motar should be finished within the initial setting time, conventionally should be controlled in 3 hours, and should be controlled in 2 hours summer.2, control raw material entry test and examination.Sand fineness modulus and mud content must be qualified, can not be with meticulous sand and the too high cement of strength grade, be advisable with 32.5 class g cements; The lime putty maturation period of mixing can not be less than 15 days.3, strict aerated concrete building block admission check, must guarantee to use after 28d.
Above-mentioned measure three comprises the following aspects: 1, base treatment, 2, hang stiffened wire lath, 3, whitewashing, 4, touch and smear bottom ash, 5, the layering of plastering carries out, 6, case, groove, hole processing on metope, 7, receipts face, 8, strengthen maintenance.
The invention has the beneficial effects as follows the crack of effectively having reduced the wall plastering of Aerated Concrete piece, in implementation process, be easy to grasp, easy to use.
The specific embodiment
The technological process of aerated concrete building block wall plastering is mainly: base treatment → do ash cake → necessary position hangs reinforcing mat processing → 1:1 cement mortar or adhesive for building cement paste plucking metope → smear bottom ash → smear middle level ash → float coat ash.
1, base treatment.Plaster and should after masonry completes 7 days, carry out, before plastering, with wire brush, metope is completely brushed one times, remove the loose material adhering to, floating ash and dirt, the seam that mortar is not full, closely knit with the filling of 1:3 dry cement mortar.
Water subsequently water-wet metope, masonry is advisable with top layer 8-l0mm containing water depth, can scrape observation by cutter.Because it is unlike solid brick, when trickle, there is false phenomenon thoroughly, so generally before plastering 1-2 days to metope trickle 1 ~ 2 time, do not need to irrigate, as long as suitably water, then dry in the shade and plaster again about half a day.
2, hang stiffened wire lath.Two kinds of different matrix junctions or when depth of plastering exceedes 35mm, should adopt nail to hang gauze wire cloth and strengthen processing, lap width should not be less than 150mm.
Specific practice is: adopt the metal mesh sheet of aperture >=20mm, and wide 300mm, every side 150mm, a side is followed closely on concrete metope, and opposite side is followed closely on aerated concrete building block wall, along the high elongated setting of wall.Concrete metope adopts nailing to fix with iron plate, and fixed point spacing 300mm-individual, establishes two rows.Aerated concrete building block metope is fixed with iron plate with steel nail, and mono-of constant spacing 300mm, establishes two rows.
3, whitewashing.Modulation gunite: spraying mortar adopts the cement fine sand slurry of 1:1, inside mixes 801 glue of water content 20%, and mortar adopts mechanical agitation even, and the mortar of mixing should be finished in 2 hours.
Spraying adopts high pressure spray stock pump, and every spray pump can adopt 2 ~ 3 watering cans, and when spraying, watering can is controlled at 50 ~ 80cm left and right from wall distance.
Water seasoning in time after spraying mortar final set, until mortar and basic unit cement, can carry out bottoming operation.
4, smear bottom ash.After the cement fine sand slurry of metope and spraying cements, can smear the operation of bottom ash, while plastering, must exert oneself, be beneficial to the bonding with basic unit, floated coat meets Cha Chu, first not smearing person should be slightly thin, then evenly connect, should not connect raft too much, prevent rough joint, after the final set of bottom mortar, should use water-wet, then smear lower one deck.
5, the layering of plastering is carried out, and underlayer thickness should be controlled in 5mm, and middle level, surface thickness are advisable with 7-9mm, treats that six to seventy percent is dry after having smeared bottom ash, and hand has solid sense, in can carrying out can leave the lines of the hand time, finish coat.
6, the case on metope, groove, hole processing.When after bottom ash levelling, should immediately the bottom ash mortar of the case of fire-fighting, electric fixtures, groove, hole mouth periphery 50mm be cleaned out, use 1:1:6 cement mixing mortar floating periphery neat, upright, smooth, while plastering, exceed the thickness of a mat coat powder than metope bottom ash, guarantee that the finishing of groove, hole periphery is intact.
7, receipts face.With 1:0.3:3 cement mixing mortar cover, thick 5mm.Point survive for twice, start to smear mat coat powder when dry until middle level bottom ash five, sixty percent, magma press polish, process suitable.When receipts face, should note the time, too early easy cracking, press that too light is also easily dry and cracked.
8, strengthen maintenance, available thin conduit is to watering on wall or spraying water on wall with sprayer.

Claims (4)

1. the control method in Aerated Concrete wall plastering crack, is characterized in that mainly comprising following measure: one, the structure control of aerated concrete building block body of wall; Two, the control that aerated concrete building block materials for wall uses; Three, plastering technique control measure.
2. the control method in a kind of Aerated Concrete wall plastering according to claim 1 crack, the structure control that it is characterized in that aerated concrete building block body of wall mainly contains: for drawing without constructional column and collar tie beam claimer, should be by following setting, establish the little collar tie beam that one 120mm is thick, 240mm is wide every l rice is high in the horizontal direction, in vertical direction, establish a vertical constructional column every 3 meters, concrete post, wall and Aerated Concrete junction in addition, the high tension rib of establishing the long l000mm of 2 φ 6 muscle of every 500mm; When building wall, bottom 20cm is high, and part must adopt solid block to pave, and then builds the aerated concrete building block of B06M35; The modulus of building block and embedded bar spacing, adopt chemically-planted steel bar technology; Aerated concrete building block wall was built to beam when bottom, should leave a fixed gap, fully sank after stable and mended and build jam-packed again until body of wall, then carried out plastering construction.
3. the control method in a kind of Aerated Concrete wall plastering according to claim 1 crack, the control that it is characterized in that aerated concrete building block materials for wall has: optimize mortar and coordinate, control raw material entry test and examination, strict aerated concrete building block admission check, must guarantee to use after 28d.
4. the control method in a kind of Aerated Concrete wall plastering according to claim 1 crack, it is characterized in that plastering technique control mainly contains: 1, base treatment, 2, hang stiffened wire lath, 3, whitewashing, 4, touch and smear bottom ash, 5, the layering of plastering carries out, 6, case, groove, hole processing on metope, 7, receipts face, 8, strengthen maintenance.
CN201410021664.6A 2014-01-17 2014-01-17 Method for controlling cracks in process of plastering aerated concrete block wall Pending CN103790386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410021664.6A CN103790386A (en) 2014-01-17 2014-01-17 Method for controlling cracks in process of plastering aerated concrete block wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410021664.6A CN103790386A (en) 2014-01-17 2014-01-17 Method for controlling cracks in process of plastering aerated concrete block wall

Publications (1)

Publication Number Publication Date
CN103790386A true CN103790386A (en) 2014-05-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105421688A (en) * 2015-12-09 2016-03-23 中建二局第三建筑工程有限公司 Spliced galling structure of wall and galling construction method thereof
CN105525726A (en) * 2015-05-26 2016-04-27 中建四局第一建筑工程有限公司 Aerated brick wall plastering construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105525726A (en) * 2015-05-26 2016-04-27 中建四局第一建筑工程有限公司 Aerated brick wall plastering construction method
CN105421688A (en) * 2015-12-09 2016-03-23 中建二局第三建筑工程有限公司 Spliced galling structure of wall and galling construction method thereof

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Application publication date: 20140514