CN103058614A - Special thin anti-crack plastering mortar for autoclaved aerated concrete - Google Patents
Special thin anti-crack plastering mortar for autoclaved aerated concrete Download PDFInfo
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Abstract
The invention discloses a special thin anti-crack plastering mortar for autoclaved aerated concrete and belongs to the technical field of building materials. According to the special thin anti-crack plastering mortar disclosed by the invention, a dry material is added with water by a mass ratio that water to dry material ratio is equal to 1:4, and then stirred for 3-5 minutes to prepare mortar, wherein the dry material consists of the following components in mass by percentage: 20%-35% of cement, 10%-30% of 40-70-mesh quartz sand, 30%-50% of 80-100-mesh quartz sand, 2%-7% of 200-mesh coarse whiting powder, 1.5%-4% of redispersible emulsion powder; 0.15%-0.5% of water-retaining agent; 0.2%-0.7% of wood fiber and 0.11%-0.45% of short fiber. Being prepared by adopting quartz sand of 40-70 meshes or 80-100 meshes, the special thin anti-crack plastering mortar for the autoclaved aerated concrete disclosed by the invention has an excellent anti-crack performance, realizes effective control on contraction percentage of the mortar, causes no cracks during large-area construction, achieves good caking property, and realizes organic combination between the mortar and the surface layer of the autoclaved aerated concrete.
Description
Technical field
The special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete mortar belongs to building material technical field.
Background technology
Along with the energy-saving and emission-reduction policy in the promotion and implementation of building field and the energetically implementation of wall reform, air-entrained concrete building block because of its a series of advantage, more and more is subject to the favor in market as a kind of novel materials for wall, is widely used in the construction work.
Steam-pressing aero-concrete is a kind of of gas concrete, to make airentraining agent with adding aluminium powder in the batching of calcareous material (such as cement, lime) and siliceous material (such as sand, flyash, slag), through add water stirring, casting, the expansion of getting angry, precuring cutting, the porous silicate building block that forms through autoclave curing again.The unit weight of steam-pressing aero-concrete is 1/3rd of clay brick, and heat-insulating property is 3 ~ 4 times of clay brick, and sound-proofing properties is 2 times of clay brick, and anti-permeability performance is more than a times of clay brick, and fire performance is 6 ~ 8 times of Steel Concrete.
But, because the characteristics such as air-entrained concrete building block self water-intake rate is large, vesicular structure, the cubic deformation coefficient is bigger than normal, low strength, characteristics that material is more crisp, when being combined with common plastering mortar, shrinkage coefficient is inconsistent, easily make body of wall the crack occur, coat of plaster produces big area be full of cracks, hollowing and the phenomenon such as come off, and has affected construction quality and building wall aesthetic.For above situation, the many enterprises of recent year and research institutions develop this and innovate, also formed the product of various prescriptions, the domestic national sector standard JC890-2001 that also worked out of while, yet domestic many quality producies are uneven, do not have good specific aim and practicality, the aerated concrete block wall crack problem is not still solved effectively.
For the quality of better guaranteeing special plastering mortar and keep good heat-insulating property to the invention provides the special-purpose thin layer anti-cracking plastering of the steam-pressing aero-concrete mortar of producing as main raw material(s) take quartz sand and suitable consolidating material, so that its superior splitting resistance is embodied in the practical application technological standard and mutually coordination, avoid being out of shape the asynchronous hollowing cracking phenomena that occurs because of both.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of synchronous with the steam-pressing aero-concrete distortion, splitting resistance, the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete mortar that cohesiveness is strong.
The technical solution adopted for the present invention to solve the technical problems is: the special-purpose thin layer anti-cracking plastering of this steam-pressing aero-concrete mortar is characterized in that: add entry according to quality than water: siccative=1:4 and stir 3 ~ 5min mortar processed; Described siccative mass percent is cement 20 ~ 35%, 40 ~ 70 order quartz sands 10 ~ 30% and 80 ~ 100 order quartz sands, 30 ~ 50%, 200 order dicalcium powders 2 ~ 7%, redispersable latex powder 1.5 ~ 4%, water-holding agent 0.15 ~ 0.5%, xylon 0.2 ~ 0.7%, staple fibre 0.11 ~ 0.45%.Mortar adds entry according to quality than water: siccative=1:4 again and stirs 3 ~ 5min mortar processed in use first the siccative mixing.
Preferably, described cement is normal silicate 42.5 cement.
Described quartz sand silt content is less than 2%.
Preferably, described water-holding agent is Vltra tears.
Preferably, described staple fibre mean length is 0.6mm.
The present invention utilizes quartz sand and suitable consolidating material to make the thin layer anti-cracking plastering mortar of steam-pressing aero-concrete special use for main raw material(s).Base material need not brushed any interfacial agents when this thin layer anti-cracking plastering mortar used, and did not need the enhancement process such as linked network, adopted thin layer to plaster during construction, depth of plastering is 3mm, its shrinkage value is similar to the air-entrained concrete building block drying shrinkage value, and matching is good, can effectively prevent cracking of building body; Improve water retentivity of mortar, workability, density, antibiosis performance and cohesive strength, and constructing operation is convenient, is fit to large-scale promotion application, has significant economic benefit and social benefit.
The present invention adopt the inclusion-free silt content less than 2% quartz sand as aggregate, its preferably aggregate collocation forms good skeleton in thin layer anti-cracking plastering mortar, can access the good closely knit thin layer anti-cracking plastering mortar of workability.Redispersable latex powder among the present invention is used in thin layer anti-cracking plastering mortar, to improve mortar force of cohesion and water-retentivity, guarantees that mortar obtains preferably cohesive strength.
Water-holding agent among the present invention is used for carrying out water-keeping thickening in thin layer anti-cracking plastering mortar, improves the wet viscosity of construction simplicity and binding agent etc.Vltra tears preferably as the water-holding agent of this sand-cement slurry, has pumping.In the slurry of plastering, as tamanori, improve smear and prolong operable time.The water retention property of Vltra tears makes slurry can because doing to such an extent that chap too soon, not strengthen the rear intensity of sclerosis after smearing.
Normal silicate 42.5 cement that adopt among the present invention are a kind of inorganic binders, are used for making the intensity of mortar to develop and guarantee the time of coagulation of mortar and good later strength rapidly.Staple fibre among the present invention is used for effectively improving the cracking resistance of mortar, the ability such as freeze proof, impervious.Xylon among the present invention, can improve mortar workability, splitting resistance, the anti-property of hanging down, improve bonding strength and surface strength.Dicalcium powder among the present invention not only can reduce cement consumption and reduce production costs, and can also increase toughness and the intensity of mortar.
The present invention is by to allotment and an amount of proportioning of consolidating material of quartz sand fineness and add the water-holding agent of optimum quantity, so that the plastering mortar coefficient of expansion of the present invention adapts to the coefficient of expansion of air-entrained concrete building block, self water retention capacity adapts to just that air-entrained concrete building block self water-intake rate is large, the characteristics of vesicular structure, makes the special-purpose thin layer anti-cracking plastering of steam-pressing aero-concrete of the present invention mortar.
Compared with prior art, the beneficial effect that the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete of the present invention mortar has is: this thin layer anti-cracking plastering mortar resistance to cleavage is excellent, the shrinking percentage of mortar has obtained effectively control, cracking can not appear in large-area construction, effectively prevents the coat of plaster cracking; Adhesive property is good, mortar and the organic combination of steam-pressing aero-concrete surface layer, water-retentivity is high, density is good, cohesive strength is large, and constructing operation is convenient, the significant advantages such as this product has energy-saving and environmental protection, intensity is high, the construction comprehensive cost is low, good product quality.
Embodiment
Below in conjunction with specific embodiment the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete of the present invention mortar is done progress and do not illustrate that wherein embodiment 1 is most preferred embodiment.
The present invention utilizes quartz sand and suitable consolidating material to make the thin layer anti-cracking plastering mortar of steam-pressing aero-concrete special use for main raw material(s).Preparation method of the present invention is: take by weighing various starting material by the metering of recipe ratio row, adding successively quartz sand, ordinary Portland cement (grade of compressive strength was 42.5 in 28 days), dicalcium powder, redispersable latex powder, water-holding agent in stirrer preferentially adopts Vltra tears, xylon, staple fibre to adopt the 0.6mm staple fibre to stir, form thin layer anti-cracking plastering mortar product, during construction, ratio according to water cement ratio 1:4 is mixed, and uses behind stirring 3 ~ 5min.
Table 1 is the mass percent consumption of embodiment 1 ~ 6 siccative and the detected result behind the corresponding over dry of wiping one's face.
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Normal silicate 42.5 cement | 30% | 32% | 32% | 26% | 20% | 35% |
| 40 ~ 70 purpose quartz sands | 20% | 22% | 28% | 30% | 29% | 10% |
| 80 ~ 100 purpose quartz sands | 41% | 38% | 30% | 37.45% | 39.04% | 50% |
| 200 order dicalcium powders | 5% | 4% | 6% | 3% | 7% | 2% |
| Redispersable latex powder | 2.9% | 3% | 2.8% | 2.6% | 4% | 1.85% |
| Water-holding agent | 0.3% | 0.4% | 0.35% | 0.25% | 0.15% | 0.5% |
| Xylon | 0.5% | 0.4% | 0.6% | 0.3% | 0.7% | 0.2% |
| Staple fibre | 0.3% | 0.2% | 0.25% | 0.4% | 0.11% | 0.45% |
| Delamination degree (mm) | 18 | 18 | 18 | 18 | 16 | 17 |
| Ultimate compression strength (MPa) | 5.3 | 5.4 | 5.2 | 5.3 | 5.1 | 5.5 |
| Cohesive strength (MPa) | 0.35 | 0.36 | 0.35 | 0.37 | 0.35 | 0.4 |
Wherein embodiment 1 ~ 4 used water-holding agent is Vltra tears, and embodiment 5,6 water-holding agents are polyacrylamide.
The special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete of the present invention mortar as can be seen from Table 1, the rear performance of wiping one's face is: delamination degree: 16 ~ 18mm, ultimate compression strength: 5.1 ~ 5.5MPa, cohesive strength 0.35 ~ 0.4MPa, satisfy the requirement of JC890-2001 industry standard, property indices detected result of the present invention and experiment are used and are shown that this product satisfies industry standard to the properties requirement of special plastering mortar, water-retentivity and splitting resistance with excellence, mortar is abundant aquation in use, it is more firm to bond, pore is more closely knit, makes mortar have good cohesive force and the anti-property of hanging down, and the phenomenon of stopping metope hollowing cracking occurs.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (5)
1. the special-purpose thin layer anti-cracking plastering of a steam-pressing aero-concrete mortar is characterized in that: add entry according to quality than water: siccative=1:4 and stir 3 ~ 5min mortar processed; Described siccative mass percent is: cement 20 ~ 35%, 40 ~ 70 order quartz sands, 10 ~ 30%, 80 ~ 100 order quartz sands 30 ~ 50%, 200 order dicalcium powders 2 ~ 7%, redispersable latex powder 1.5 ~ 4%, water-holding agent 0.15 ~ 0.5%, xylon 0.2 ~ 0.7%, staple fibre 0.11 ~ 0.45%.
2. the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete according to claim 1 mortar, it is characterized in that: described cement is normal silicate 42.5 cement.
3. the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete according to claim 1 mortar, it is characterized in that: described quartz sand silt content is less than 2%.
4. the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete according to claim 1 mortar, it is characterized in that: described water-holding agent is Vltra tears.
5. the special-purpose thin layer anti-cracking plastering of a kind of steam-pressing aero-concrete according to claim 1 mortar, it is characterized in that: described staple fibre mean length is 0.6mm.
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Cited By (20)
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| CN103590560A (en) * | 2013-12-16 | 2014-02-19 | 孔祥利 | Fastened heat-insulating wallboard and formula thereof |
| CN103964771A (en) * | 2014-05-07 | 2014-08-06 | 中启胶建集团有限公司 | Waterproof surface mortar for thermal insulation system outside building outer wall and application method thereof |
| CN104211338A (en) * | 2014-08-28 | 2014-12-17 | 成都市容德建筑劳务有限公司 | Crack-resisting composite mortar |
| CN105271961A (en) * | 2015-05-19 | 2016-01-27 | 连云港松彬建筑材料有限公司 | Coating mortar |
| CN105601209A (en) * | 2016-04-10 | 2016-05-25 | 欧振云 | Crack-resistant plastering mortar |
| CN105906263A (en) * | 2016-04-19 | 2016-08-31 | 金华市奥菲建材有限公司 | Autoclaved aerated concrete masonry environment-friendly mortar and preparation method of same |
| CN106747049A (en) * | 2016-11-17 | 2017-05-31 | 亚士创能科技(上海)股份有限公司 | Exterior-wall heat insulation thin-coat plaster system decorative mortar and its manufacture method and construction method |
| CN106810168A (en) * | 2017-02-22 | 2017-06-09 | 上海曹杨建筑粘合剂厂 | A kind of polymer modification thin layer cracking resistance leveling mortar |
| CN107021707A (en) * | 2017-05-31 | 2017-08-08 | 福州市思科达建设科技有限公司 | A kind of cracking resistance granite stone powder thin layer motar |
| CN107089815A (en) * | 2017-05-31 | 2017-08-25 | 福州市思科达建设科技有限公司 | Thin layer cracking resistance masonry mortar prepared by a kind of utilization granite stone powder |
| CN107117884A (en) * | 2017-06-19 | 2017-09-01 | 清远肆柒柒新材料科技有限公司 | A kind of microdilatancy Fireproof thermal insulation mortar and preparation method thereof |
| CN107151124A (en) * | 2017-06-01 | 2017-09-12 | 云南坤瑞泰隆建材科技股份有限公司 | A kind of steam-pressing aero-concrete thin layer decorative mortar |
| CN107176816A (en) * | 2017-05-31 | 2017-09-19 | 福州市思科达建设科技有限公司 | A kind of high tenacity granite stone powder thin layer motar |
| CN107540286A (en) * | 2017-08-30 | 2018-01-05 | 云南工程建设总承包公司 | It is a kind of to be used for concrete base layer or the thin layer motar of masonry basic unit |
| CN107540311A (en) * | 2017-09-26 | 2018-01-05 | 杭州泽通建筑节能新材料有限公司 | A kind of autoclaved aerated concrete slab splices binding agent |
| CN107686276A (en) * | 2017-09-26 | 2018-02-13 | 河南兴安新型建筑材料有限公司 | Environment-friendly type steam-aerated concrete plate caulking agent |
| CN107857534A (en) * | 2017-11-03 | 2018-03-30 | 广西美展化工科技有限公司 | High crack resistance type cement batch lime and brick and preparation method thereof |
| CN111519775A (en) * | 2020-04-29 | 2020-08-11 | 河南远大可持续建筑科技有限公司 | Anti-cracking treatment method for joints of autoclaved aerated concrete wallboards |
| CN113307584A (en) * | 2021-07-01 | 2021-08-27 | 东莞市建安集团有限公司 | Thin-layer mortar and masonry construction method thereof |
| CN114876133A (en) * | 2022-05-25 | 2022-08-09 | 北京国洋保温防水工程有限公司 | Building roof waterproof construction method |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590560A (en) * | 2013-12-16 | 2014-02-19 | 孔祥利 | Fastened heat-insulating wallboard and formula thereof |
| CN103964771A (en) * | 2014-05-07 | 2014-08-06 | 中启胶建集团有限公司 | Waterproof surface mortar for thermal insulation system outside building outer wall and application method thereof |
| CN104211338A (en) * | 2014-08-28 | 2014-12-17 | 成都市容德建筑劳务有限公司 | Crack-resisting composite mortar |
| CN105271961A (en) * | 2015-05-19 | 2016-01-27 | 连云港松彬建筑材料有限公司 | Coating mortar |
| CN105601209A (en) * | 2016-04-10 | 2016-05-25 | 欧振云 | Crack-resistant plastering mortar |
| CN105906263A (en) * | 2016-04-19 | 2016-08-31 | 金华市奥菲建材有限公司 | Autoclaved aerated concrete masonry environment-friendly mortar and preparation method of same |
| CN106747049A (en) * | 2016-11-17 | 2017-05-31 | 亚士创能科技(上海)股份有限公司 | Exterior-wall heat insulation thin-coat plaster system decorative mortar and its manufacture method and construction method |
| CN106810168A (en) * | 2017-02-22 | 2017-06-09 | 上海曹杨建筑粘合剂厂 | A kind of polymer modification thin layer cracking resistance leveling mortar |
| CN107176816A (en) * | 2017-05-31 | 2017-09-19 | 福州市思科达建设科技有限公司 | A kind of high tenacity granite stone powder thin layer motar |
| CN107021707A (en) * | 2017-05-31 | 2017-08-08 | 福州市思科达建设科技有限公司 | A kind of cracking resistance granite stone powder thin layer motar |
| CN107089815A (en) * | 2017-05-31 | 2017-08-25 | 福州市思科达建设科技有限公司 | Thin layer cracking resistance masonry mortar prepared by a kind of utilization granite stone powder |
| CN107151124A (en) * | 2017-06-01 | 2017-09-12 | 云南坤瑞泰隆建材科技股份有限公司 | A kind of steam-pressing aero-concrete thin layer decorative mortar |
| CN107117884A (en) * | 2017-06-19 | 2017-09-01 | 清远肆柒柒新材料科技有限公司 | A kind of microdilatancy Fireproof thermal insulation mortar and preparation method thereof |
| CN107117884B (en) * | 2017-06-19 | 2019-11-15 | 清远肆柒柒新材料科技有限公司 | A kind of microdilatancy Fireproof thermal insulation mortar and preparation method thereof |
| CN107540286A (en) * | 2017-08-30 | 2018-01-05 | 云南工程建设总承包公司 | It is a kind of to be used for concrete base layer or the thin layer motar of masonry basic unit |
| CN107540311A (en) * | 2017-09-26 | 2018-01-05 | 杭州泽通建筑节能新材料有限公司 | A kind of autoclaved aerated concrete slab splices binding agent |
| CN107686276A (en) * | 2017-09-26 | 2018-02-13 | 河南兴安新型建筑材料有限公司 | Environment-friendly type steam-aerated concrete plate caulking agent |
| CN107857534A (en) * | 2017-11-03 | 2018-03-30 | 广西美展化工科技有限公司 | High crack resistance type cement batch lime and brick and preparation method thereof |
| CN111519775A (en) * | 2020-04-29 | 2020-08-11 | 河南远大可持续建筑科技有限公司 | Anti-cracking treatment method for joints of autoclaved aerated concrete wallboards |
| CN113307584A (en) * | 2021-07-01 | 2021-08-27 | 东莞市建安集团有限公司 | Thin-layer mortar and masonry construction method thereof |
| CN114876133A (en) * | 2022-05-25 | 2022-08-09 | 北京国洋保温防水工程有限公司 | Building roof waterproof construction method |
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