CN102826814A - Cement-based self-leveling mortar - Google Patents
Cement-based self-leveling mortar Download PDFInfo
- Publication number
- CN102826814A CN102826814A CN2012103602047A CN201210360204A CN102826814A CN 102826814 A CN102826814 A CN 102826814A CN 2012103602047 A CN2012103602047 A CN 2012103602047A CN 201210360204 A CN201210360204 A CN 201210360204A CN 102826814 A CN102826814 A CN 102826814A
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- Prior art keywords
- mortar
- cement
- leveling
- resistance
- based self
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- 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.)
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 68
- 239000004568 cement Substances 0.000 title claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002956 ash Substances 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 2
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 159000000002 lithium salts Chemical class 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 abstract description 4
- 239000010440 gypsum Substances 0.000 abstract description 4
- 230000000740 bleeding effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 239000006004 Quartz sand Substances 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 238000009408 flooring Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 15
- 150000004645 aluminates Chemical class 0.000 description 7
- 238000005336 cracking Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 208000034189 Sclerosis Diseases 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 breeze Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building material, and in particular relates to cement-based self-leveling mortar, which takes sulphoaluminate cement as basic cementing material and quartz sand as aggregate, uses b-semi-hydrated gypsum to control the mortar not to contract and utilizes other additives to enable the prepared mortar to have the comprehensive performances required by the cement-based self-leveling mortar. The newly stirred mortar has the performances of high fluidity, self-leveling property, bleeding resistance and separation resistance; and the hardened mortar has the performances of shrink resistance, crack resistance, high surface hardness and good wear resistance. Compared with the existing self-leveling flooring mortar product with shrink resistance and crack resistance, the cement-based self-leveling mortar is low in production cost and wide in application scope.
Description
Technical field
The present invention relates to building materials field, be specifically related to a kind of cement-based self-leveling mortar.
Background technology
Cement-based material comprises sand-cement slurry and concrete, is the engineering materials that is widely used in ground.At present, the assurance terrace is smooth has with constructional method level:
(1) when concrete floor (base plate) is constructed, adopts the leveling of laser smoothing machine, troweling;
(2) on unfairness or out-of-level concrete floor, smear one deck mortar levelling layer.
Existing mortar working method commonly used is: use silicate series cement as gelling material; (particle diameter 0.160～4.75mm) is aggregate with sand to use common building; Use various admixtures such as water reducer (common, efficient or ultra-high efficiency), tackifier (ether of cellulose, rubber powder etc.), mineral admixture (flyash, breeze, silicon ash etc.); Prepare the mortar of various functions of use; For example masonry mortar, plastering mortar, thermal insulation mortar, waterproof mortar, mending mortar, decoration mortar, gravity flow self-leveling floor mortar, or the like.Commonly used mixing and stirring uses working method to be: directly preparing burden and stir in (1) scene, is fit to common performance mortar; (2) wet method premixing mortar is promptly mixed at stirring station and is made, and is transported to the working-yard and uses; (3) all dry mash dry mixing are even in factory, packing, the scene only adds the water stirring and just can use.High function, High Performance Mortar for the batching more complicated comprise insulation, waterproof, decoration, gravity flowing levelling mortar etc., generally adopt the plant produced dry-mixed mortar, to guarantee mortar quality and performance.
Adopt laser smoothing machine construction concrete floor or road surface, be suitable for large-area industry ground slab, level ground, station, airport or highway.Most indoor terraces or outdoor sclerosis floor construction mainly rely on artificial levelling, and labour intensity is big, and the levelling effect is decided by workman's state of the art, cannot say for sure to demonstrate,prove construction quality.At present, most gravity flowing levelling mortar products can only be used to level up the level leveling of layer because of the meeting shrinkage cracking on the market, can not be used for surface layer.Overcome in the mortar use self-constriction and dry shrinkage, be world-famous puzzle.At present, following technological line is arranged: (1) adopts silicate cement to prepare gravity flowing levelling mortar.Add swelling agent,, rely on swelling agent to produce spontaneous contraction and dry shrinkage that the expansion compensation cement hydrating hardening process produces like UEA, CSA or the like.But the mechanism of intumescence of these swelling agents is a moisture in the absorbing environmental, produces swelling property mineral (calcium hydroxide or ettringite), and promptly the expansible power resources are in ambient moisture.Therefore,, lack water supply, just can't produce expansion at dry environment.The expansion mineral that produce at wet environment early stage, the later stage is in dry environment, can decompose again, produces to shrink and cracking.Theory and practice all proves, the swelling agent strong to the water dependency only at lasting wet environment, can effectively prevent the contraction and the cracking of cement-based material; At the drying and watering cycle environment, anti-contraction effect of anti-cracking is unreliable; Then invalid fully at dry environment, in addition shrink with ftracture more serious.(2) adopt aluminate cement to prepare gravity flowing levelling mortar.At present, matured product all adopts this technological line in the world, utilizes the lower contraction of aluminate to prevent the crack, and the enterprise that develops this product has only two companies of Germany at present.But use aluminate cement to produce gravity flowing levelling mortar, technical difficulty is still higher, and is not to use mortar that aluminate cement makes just not to split.In addition, the price of aluminate cement is higher, uses the price of the gravity flowing levelling mortar product of aluminate cement making also to remain high, and has hindered its widespread use.Except the product of two enterprises of Germany, existing gravity flowing levelling mortar is as floor material, appearance crack that all can be in various degree during practical application.So the product of other companies on the market in fact only is suitable for the levelling of terrace bed course, is not suitable for surface layer.Though and two enterprise's gravity flowing levelling mortar floor materials of Germany have overcome crack problem well, there is the shortcoming that cost is high, cost is high, hindered its application.
Summary of the invention
The present invention is directed to above-mentioned deficiency, provide that a kind of production cost is low, the cement-based self-leveling mortar of applied range.
Cement-based self-leveling mortar provided by the invention comprises the material of following mass fraction: 100～200 parts of the silica sands of 100 parts of quick hardening sulphoaluminate cements, 0.080～0.325mm particle diameter, 15～25 parts of b – semi-hydrated gypsums, 2～5 parts of silicon ashes, 1～1.5 part of polycarboxylate water-reducer, viscosity are 0.2～0.6 part of 1～4 part of 0.01～0.05 part of ether of cellulose, latex powder, skimmer, 0.4～0.7 part of the retardant of 10000～50000 mPa * s.
As the further improvement of cement-based self-leveling mortar of the present invention, described cement-based self-leveling mortar also comprises the lithium salts class hardening accelerator that is not higher than 0.3 part.
The mix method of use of cement-based self-leveling mortar provided by the invention, identical with existing mortar mix method of use, the amount of the mixing water that mixes when difference is mix is 35～55 parts.
The present invention adopts quick hardening sulphoaluminate cement as basic gelling material, realizes the mortar setting and harden, reaches intensity and wear resisting property that terrace mortar needs; Use silica sand as aggregate, improve volume stability, intensity, the wear resistance of mortar; Use the b-semi-hydrated gypsum, make aluminosulfate cement setting and harden process produce irreversible microdilatancy, promptly be exposed to dry environment after the sclerosis and can not produce contraction and crack; Use the powdery polycarboxylate water-reducer, it is mobile to improve mortar, realizes that self-leveling can; Use silicon ash, ether of cellulose and latex powder, regulate mortar viscosity and water retention capacity, guarantee high workability, gravity flowing levelling mortar not bleeding, do not emanate, sclerosis back quality uniformity improves the cohesive strength of gravity flowing levelling mortar and base material simultaneously; Use the powdery skimmer, guarantee mortar in plastic state, bubble can be got rid of fast, prevents that bubble and pore from appearring in the gravity flowing levelling mortar surface, guarantees that surfacing is smooth; Use Powdered retardant to regulate the time of coagulation of aluminosulfate cement, guarantee the operable time of mortar; Use hardening accelerator to improve strength development.The present invention is basic gelling material with aluminosulfate cement; With silica sand as aggregate; Do not shrink with b – semi-hydrated gypsum control mortar; With other functional chemical admixture; Make the mortar of preparation possess the over-all properties of requirement, newly mix performance comprise high workability, self-leveling can, suitable operable time and exhaust bubble performance fast, Hardenability comprise not shrinkage cracking, higher-strength and higher wear resisting property (surface hardness) thus make new sand cutting slurry of the present invention have high workability, from levelling, not bleeding, do not emanate; The sclerosis mortar does not shrink, does not ftracture, surface hardness is high, wear resisting property is good.Do not shrink indehiscent gravity flow self-leveling floor mortar product and compare with existing; The raw material aluminosulfate cement that the present invention uses; Price can reach existing and not shrink 1/4～1/10 of aluminate cement cost of material that indehiscent gravity flow self-leveling floor mortar uses, and product performance are identical.With aluminosulfate cement is basic gelling material; With silica sand as aggregate; Do not shrink with b – semi-hydrated gypsum control mortar,, make the mortar of preparation possess the over-all properties of requirement with other functional chemical admixture; Newly mix performance comprise high workability, self-leveling can, suitable operable time and exhaust bubble performance fast, Hardenability comprises shrinkage cracking not, higher intensity and wear resisting property (surface hardness).Therefore product of the present invention can reduce production costs significantly, thereby can use more widely.Mortar of the present invention can be used for the terrace surface layer because can shrinkage cracking, comprises the maintenance of new terrace levelling and surface decoration and level ground, once visited place or renovates, thereby enlarged the range of application of gravity flowing levelling mortar.
Embodiment
In order further to understand the present invention, below explain with embodiment.Need to prove that following examples only as enumerating, should not be regarded as the restriction to scope of the present invention.
Mixing water consumption when the raw material composition of the cement based terrace mortar of each embodiment of embodiment and use is seen table 1; The performance that new sand cutting slurry after the cement based terrace mortar of different embodiment mixed and stirred records and see table 2 with the service condition of the terrace of its acquisition, wherein the degree of mobilization testing method is seen GB/T 50448-2008 " cement-based grouting material utilisation technology standard " appendix A .0.2; Operable time when degree of mobilization was for construction in 30 minutes; The intensity test method is seen GB/T 50448-2008 " cement-based grouting material utilisation technology standard " appendix A .0.4; Vertical rate of expansion, elliptical ring split test testing method are seen GB/T 50448-2008 " cement-based grouting material utilisation technology standard " appendix A .0.5, and surface hardness adopts Mohs'hardness scale to measure.
Mixing water consumption (consumption unit is part) when the raw material composition of the cement based terrace mortar of each embodiment of table 1 and use
The performance that new sand cutting slurry after the cement based terrace mortar of table 2 couple different embodiment mixes and stirs records and with the service condition of the terrace of its acquisition.
Claims (3)
1. cement-based self-leveling mortar, comprise the material of following mass fraction: 100～200 parts of the silica sands of 100 parts of quick hardening sulphoaluminate cements, 0.080～0.325mm particle diameter, 15～25 parts of b – semi-hydrated gypsums, 2～5 parts of silicon ashes, 1～1.5 part of polycarboxylate water-reducer, viscosity are 0.2～0.6 part of 1～4 part of 0.01～0.05 part of ether of cellulose, latex powder, skimmer, 0.4～0.7 part of the retardant of 10000～50000 mPa * s.
2. cement-based self-leveling mortar as claimed in claim 1 is characterized in that: also comprise the lithium salts class hardening accelerator that is not higher than 0.3 part.
3. the mix method of use of a cement-based self-leveling mortar according to claim 1 or claim 2, the amount of the mixing water that mixes during mix is 35～55 parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210360204.7A CN102826814B (en) | 2012-09-25 | 2012-09-25 | Cement-based self-leveling mortar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210360204.7A CN102826814B (en) | 2012-09-25 | 2012-09-25 | Cement-based self-leveling mortar |
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| CN102826814A true CN102826814A (en) | 2012-12-19 |
| CN102826814B CN102826814B (en) | 2014-06-04 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467046A (en) * | 2013-08-28 | 2013-12-25 | 句容联众科技开发有限公司 | Polymer cement mortar and preparation method thereof |
| CN104108918A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | High performance cement-base self-leveling mortar |
| CN105016678A (en) * | 2015-07-08 | 2015-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | High-early-strength cement-based filling material for semi-flexible composite pavements |
| CN105060831A (en) * | 2015-08-03 | 2015-11-18 | 四川好途程科技有限公司 | Seamless self-leveling cement millstone and preparation method therefor |
| CN105464230A (en) * | 2015-11-25 | 2016-04-06 | 江苏尼高科技有限公司 | Floor slab heat insulation and sound isolation system and construction method of floor slab heat insulation and sound isolation system |
| CN105622029A (en) * | 2015-12-25 | 2016-06-01 | 江苏蓝圈新材料有限公司 | Cement-based self-leveling mortar |
| CN106587877A (en) * | 2016-12-06 | 2017-04-26 | 长沙万工机器人科技有限公司 | High-hardness cementitious self-leveling mortar |
| CN107540329A (en) * | 2017-09-26 | 2018-01-05 | 河南兴安新型建筑材料有限公司 | Quick-hardening cement based self-leveling mortar |
| CN108298928A (en) * | 2018-04-04 | 2018-07-20 | 夏璐 | A kind of plasticizing quick hardening cement and its preparation method |
| CN108706937A (en) * | 2018-06-15 | 2018-10-26 | 武汉理工大学 | A kind of sulphoaluminate cement base gravity flowing levelling mortar and preparation method thereof |
| CN109694228A (en) * | 2017-10-23 | 2019-04-30 | 北新集团建材股份有限公司 | A kind of gypsum based self-leveling mortar and preparation method thereof and gypsum based self-leveling slurry |
| CN109776030A (en) * | 2017-11-14 | 2019-05-21 | 刘国伟 | The solid extraordinary slurry in copolymerization ground |
| CN109836104A (en) * | 2019-04-16 | 2019-06-04 | 广州康磊建材有限公司 | A kind of high cracking resistance Wear-resisting terrace material and preparation method thereof |
| CN110451911A (en) * | 2019-09-12 | 2019-11-15 | 德清扬泰建筑材料有限公司 | A kind of flooring keeps the temperature the preparation method of levelling integrated gravity flowing levelling mortar |
| CN111648554A (en) * | 2020-06-30 | 2020-09-11 | 北京建筑材料科学研究总院有限公司 | A kind of anti-cracking ground filling leveling layer and construction method thereof |
| CN115324303A (en) * | 2022-09-29 | 2022-11-11 | 云南云天化环保科技有限公司 | Gypsum-based self-leveling mortar floor interface treatment method |
| CN115403345A (en) * | 2022-09-29 | 2022-11-29 | 云南云天化环保科技有限公司 | A surface treatment method for gypsum-based self-leveling mortar floor |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103467046A (en) * | 2013-08-28 | 2013-12-25 | 句容联众科技开发有限公司 | Polymer cement mortar and preparation method thereof |
| CN104108918B (en) * | 2014-06-19 | 2016-08-24 | 广东省建筑科学研究院集团股份有限公司 | A kind of high-performance cement based self-leveling mortar |
| CN104108918A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | High performance cement-base self-leveling mortar |
| CN105016678A (en) * | 2015-07-08 | 2015-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | High-early-strength cement-based filling material for semi-flexible composite pavements |
| CN105016678B (en) * | 2015-07-08 | 2017-01-18 | 水利部交通运输部国家能源局南京水利科学研究院 | High-early-strength cement-based filling material for semi-flexible composite pavements |
| CN105060831A (en) * | 2015-08-03 | 2015-11-18 | 四川好途程科技有限公司 | Seamless self-leveling cement millstone and preparation method therefor |
| CN105464230A (en) * | 2015-11-25 | 2016-04-06 | 江苏尼高科技有限公司 | Floor slab heat insulation and sound isolation system and construction method of floor slab heat insulation and sound isolation system |
| CN105622029A (en) * | 2015-12-25 | 2016-06-01 | 江苏蓝圈新材料有限公司 | Cement-based self-leveling mortar |
| CN106587877A (en) * | 2016-12-06 | 2017-04-26 | 长沙万工机器人科技有限公司 | High-hardness cementitious self-leveling mortar |
| CN107540329A (en) * | 2017-09-26 | 2018-01-05 | 河南兴安新型建筑材料有限公司 | Quick-hardening cement based self-leveling mortar |
| CN109694228B (en) * | 2017-10-23 | 2020-12-22 | 北新集团建材股份有限公司 | Gypsum-based self-leveling mortar, preparation method thereof and gypsum-based self-leveling slurry |
| CN109694228A (en) * | 2017-10-23 | 2019-04-30 | 北新集团建材股份有限公司 | A kind of gypsum based self-leveling mortar and preparation method thereof and gypsum based self-leveling slurry |
| CN109776030A (en) * | 2017-11-14 | 2019-05-21 | 刘国伟 | The solid extraordinary slurry in copolymerization ground |
| CN108298928A (en) * | 2018-04-04 | 2018-07-20 | 夏璐 | A kind of plasticizing quick hardening cement and its preparation method |
| CN108706937A (en) * | 2018-06-15 | 2018-10-26 | 武汉理工大学 | A kind of sulphoaluminate cement base gravity flowing levelling mortar and preparation method thereof |
| CN109836104A (en) * | 2019-04-16 | 2019-06-04 | 广州康磊建材有限公司 | A kind of high cracking resistance Wear-resisting terrace material and preparation method thereof |
| CN110451911A (en) * | 2019-09-12 | 2019-11-15 | 德清扬泰建筑材料有限公司 | A kind of flooring keeps the temperature the preparation method of levelling integrated gravity flowing levelling mortar |
| CN111648554A (en) * | 2020-06-30 | 2020-09-11 | 北京建筑材料科学研究总院有限公司 | A kind of anti-cracking ground filling leveling layer and construction method thereof |
| CN111648554B (en) * | 2020-06-30 | 2021-12-14 | 北京建筑材料科学研究总院有限公司 | A kind of anti-cracking ground filling leveling layer and construction method thereof |
| CN115324303A (en) * | 2022-09-29 | 2022-11-11 | 云南云天化环保科技有限公司 | Gypsum-based self-leveling mortar floor interface treatment method |
| CN115403345A (en) * | 2022-09-29 | 2022-11-29 | 云南云天化环保科技有限公司 | A surface treatment method for gypsum-based self-leveling mortar floor |
| CN115403345B (en) * | 2022-09-29 | 2023-10-17 | 云南云天化环保科技有限公司 | A surface treatment method for gypsum-based self-leveling mortar floor |
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| CN102826814B (en) | 2014-06-04 |
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