CN102976693A - Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand - Google Patents
Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand Download PDFInfo
- Publication number
- CN102976693A CN102976693A CN2012105282255A CN201210528225A CN102976693A CN 102976693 A CN102976693 A CN 102976693A CN 2012105282255 A CN2012105282255 A CN 2012105282255A CN 201210528225 A CN201210528225 A CN 201210528225A CN 102976693 A CN102976693 A CN 102976693A
- Authority
- CN
- China
- Prior art keywords
- mortar
- ultra
- crack mortar
- fine sand
- external thermal
- 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.)
- Granted
Links
Abstract
The invention discloses an outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand. The outer-wall external thermal-insulation anti-crack mortar consists of the following ingredients in parts by weight: 25-35 parts of cement, 62-72 parts of superfine sand with fineness modulus of 0.5-0.6, 1.0-3.0 parts of shrinkage reducing agent, 0.2-0.4 part of polymer modifier, 0.1-0.3 part of water-retaining agent, and 0.05-0.15 part of fiber. When the outer-wall external thermal-insulation anti-crack mortar is in use, all the ingredients are mixed with water added in a certain ratio as required on site and are stirred uniformly. Proven by experiments, the outer-wall external thermal-insulation anti-crack mortar has the advantage of solving the technical problems such as serious shrinkage and poor construction performance obstructing the use of the superfine sand with fineness modulus of 0.5-0.6 in the anti-crack mortar; and the anti-crack mortar with the ratio of compressive strength reaching 1.90, the bonding strength reaching 1.0MPa and long operational time reaching 2h is prepared and the anti-crack mortar meets the technical requirements of JG158-2004 ETIRS (external thermal insulation rendering systems made of mortar with mineral binder and nsing wxpanded polystyrene granule as aggregate) on the anti-crack mortar.
Description
Technical field
The present invention relates to a kind of mortar for building, particularly the mortar for exterior of the ultra-fine sand preparation of a kind of usefulness.
Background technology
Along with going deep into of work applied in energy saving building, external thermal insulation system is used widely.External thermal insulation system because residing envrionment temperature and humidity change greatly, autogenous shrinkage greatly or constructional method improper, the phenomenon such as cause easily external wall insulating layer generation hollowing, ftracture, come off, thus wall leakage caused, the problem such as let in air, peel off.Addressing this problem one of effective means is to smear the brush anticracking grout on the thermal insulation layer basis.At present, the major measure that overcomes the thermal insulation layer cracking resistance has the fibre-reinforced anti-crack of employing, increases flexibility and viscosity, employing swelling agent reduce shrinkability etc. by the organic polymer modification.Above-mentioned the whole bag of tricks cost improves greatly, technological process is very complicated.
The existing used sand of anticracking grout all is medium sand or coarse sand, adopts the mortar of the outer thermal-insulating and anti-cracking of ultra-fine sand (ultra-fine sand of the present invention refers to that fineness modulus is the fine sand of 0.5-0.6) preparation external wall to have no report.Adopting ultra-fine sand preparation anticracking grout, can solve utilization, the reduction cost of the ultra-fine sand of local material, also is technical breakthrough.But, adopt the shrinkage of ultra-fine sand preparation anticracking grout greatly to increase, especially easily cracking.
For above-mentioned deficiency, be badly in need of a kind of mortar that can adopt the outer thermal-insulating and anti-cracking of ultra-fine sand (fineness modulus 0.5-0.6) preparation external wall of development, when gathering materials on the spot in solution, reduce cost, also can solve ultra-fine sand preparation Mortar shrinkage amount greatly, the technical problem such as ftracture especially easily, come off, and water-retentivity and slow setting are good, easy construction.
Summary of the invention
In view of this, the purpose of this invention is to provide the mortar for exterior of the ultra-fine sand of a kind of usefulness preparation, not only can solve ultra-fine sand preparation Mortar shrinkage amount greatly, the problem that ftractures especially easily, come off, and water-retentivity and slow setting are good, easy construction.
The objective of the invention is to realize by following technique means: the mortar for exterior of the ultra-fine sand preparation of a kind of usefulness, comprise by weight following component: cement 25-35, fineness modulus is the ultra-fine sand 62-72 of 0.5-0.6, economization agent 1.0-3.0, polymer modifiers 0.2-0.4, water-holding agent 0.1-0.3, fiber 0.05-0.15.
Further, described economization agent is that diethylene glycol monobutyl ether and calcium oxide are 1: 1 mixture in mass ratio.
Further, described polymer modifiers is that acrylic rubber powder, polyvinyl alcohol rubber powder or acrylic rubber powder and polyvinyl alcohol rubber powder are 1: 1 mixture in mass ratio.
Further, described water-holding agent is that TYLOSE 30000, hydroxypropyl methyl cellulose ether or TYLOSE 30000 and hydroxypropyl methyl cellulose ether are 2: 1 mixture in mass ratio
Further, described fiber is that polypropylene fibre, vinylon fiber or polypropylene fibre and vinylon fiber are 1: 3 mixture in mass ratio.
Further, described cement is 32.5 or 42.5 ordinary Portland cements.
Beneficial effect of the present invention: the mortar for exterior of the ultra-fine sand preparation of usefulness of the present invention, comprise by weight following component: cement 25-35, fineness modulus is the ultra-fine sand 62-72 of 0.5-0.6, economization agent 1.0-3.0, polymer modifiers 0.2-0.4, water-holding agent 0.1-0.3, fiber 0.05-0.15.During use, the scene adds as required a certain proportion of water and stirs and get final product.
Traditional theory and practice be proof all: with ultra-fine sand preparation anticracking grout, can solve the ultra-fine sand of local material utilization, reduce cost, but shrinkage will increase greatly, ftractures especially easily.But, pass through verification experimental verification, the mortar for exterior of the ultra-fine sand preparation of usefulness of the present invention, solve the ultra-fine sand of obstruction (fineness modulus 0.5-0.6) and shunk the poor technical barrier of large workability for anticracking grout, prepare backfin than the anticracking grout that can reach 1.90, cohesive strength can reach 1.0MPa, operable time can reach 2h, satisfied JG158-2004 " glue powder polyphenyl granule exterior wall outer heat preservation system " to the technical requirements of anticracking grout.
Compare with existing mortar, described advantage is specially:
1, adopt amphiphilic economization agent control shrinkage, mortar dry shrinkage amount reduces about 48%, and the mortar self-constriction reduces about 70%.
2, adopt polymer modification, so that tensile bond strength improves more than 46%, backfin is than reducing about 28%.
3, adopt fiber reinforcement, so that energy-to-break has improved more than 86%.
4, adopt water-holding agent, so that coursing degree of mortar reduces by 75%, bleeding rate reduces by 93%.
Its mechanism that tells on is:
The first, economization agent control shrinkage mechanism
External wall is incubated outward that surface layer ftractures, comes off, hollowing, mainly is owing to Behavior of Hardened Cement Paste causes in the shrinkage strain under the constraint condition, such as plastic shrinkage, dry shrinkage, temperature shrinkage, self-constriction and chemical shrinkage etc.; The stress that causes when this restrained deformation or strain are during greater than the ultimate tensile strength of Behavior of Hardened Cement Paste or ultimate tensile strength, and the crack will produce.The present invention adopts amphipathic economization agent, it reduces mechanism: along with the carrying out of hydrated cementitious, economization agent is filled in the cement slurry hole solution, increased the contact angle of Behavior of Hardened Cement Paste hole solution and capillary hole wall, reduce the pore water surface tension, namely reduce because hydrated cementitious or moisture evaporate the string stress that produces when causing the pore dehydration.
The second, polymkeric substance increases flexible mechanism
Polymkeric substance acrylic rubber powder (or polyvinyl alcohol rubber powder) is the polymer substance with long-chain shape, after adding in the mortar, polymer beads is dispersed in around cement granules and the sand, after aquation, cohesion, form sticking, the continuous shape of tool or netted film structure, hole in the filling concrete stone and tiny crack, obviously improve the bonding state of pore structure, water mudrock structure and the sand of sand-cement slurry, make internal structure be tending towards perfect, form whippy space reticulated structure, increased the toughness of mortar, resistance to cleavage is improved.
The 3rd, fiber-reinforced mechanism
Mix fiber in mortar, it is random in even distribution that fiber is in sand-cement slurry, forms three-dimensional " skeleton " structure, be overlapped on the place, crack, stop or hinder the development of crackle, alleviate the stress concentration phenomenon of crack tip, reduce the source, crack, improve resistance to cleavage and the toughness of sand-cement slurry.
Embodiment
Example 1
The mortar for exterior of the ultra-fine sand preparation of a kind of usefulness, its composition and weight content are: 32.5 grades of ordinary Portland cement 350kg, fineness modulus are 0.5 ultra-fine sand 620kg, economization agent 20kg, acrylic rubber powder 3kg, TYLOSE 30000 2kg, polypropylene fibre 1kg.Wherein, economization agent is that diethylene glycol monobutyl ether and calcium oxide are 1: 1 mixture in mass ratio.
Example 2
The mortar for exterior of the ultra-fine sand preparation of a kind of usefulness, its composition and weight content are: 42.5 grades of ordinary Portland cement 250kg, fineness modulus are 0.6 ultra-fine sand 720kg, economization agent 30kg, polyvinyl alcohol rubber powder 4kg, hydroxypropyl methyl cellulose ether 3kg, vinylon fiber 1.5kg.Wherein economization agent is that diethylene glycol monobutyl ether and calcium oxide are 1: 1 mixture in mass ratio.
Example 3
The mortar for exterior of the ultra-fine sand preparation of a kind of usefulness, its composition and weight content are: 42.5 grades of ordinary Portland cement 300kg, fineness modulus are 0.55 ultra-fine sand 650kg, economization agent 2kg, polymer modifiers 3kg, water-holding agent 2kg, fiber 1kg.Wherein economization agent is that diethylene glycol monobutyl ether and calcium oxide are 1: 1 mixture in mass ratio, polymer modifiers is that acrylic rubber powder and polyvinyl alcohol rubber powder are 1: 1 mixture in mass ratio, water-holding agent is that TYLOSE 30000 is 2: 1 mixing with hydroxypropyl methyl cellulose ether in mass ratio, and fiber is that polypropylene fibre and vinylon fiber are 1: 3 mixture in mass ratio.
Be used for exterior wall after the water yield that the mortar adding of the ultra-fine sand preparation of the usefulness of above-mentioned three embodiment gained is suitable and form outer thermal-insulating and anti-cracking layer, three prepared mortars of embodiment all can satisfy JG158-2004 " glue powder polyphenyl granule exterior wall outer heat preservation system " to the technical requirements of anticracking grout.The best performance of embodiment 3 wherein, its backfin ratio can be up to 1.90, cohesive strength can be 2h up to 1.0MPa, operable time.The property indices of embodiment 1 and embodiment 2 is all on the index of " JG158-2004 " glue powder polyphenyl granule exterior wall outer heat preservation system " " defined.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the mortar for exterior with ultra-fine sand preparation is characterized in that, comprises by weight following component: cement 25-35, fineness modulus is the ultra-fine sand 62-72 of 0.5-0.6, economization agent 1.0-3.0, polymer modifiers 0.2-0.4, water-holding agent 0.1-0.3, fiber 0.05-0.15.
2. the mortar for exterior of the ultra-fine sand of usefulness according to claim 1 preparation, it is characterized in that: described economization agent is that diethylene glycol monobutyl ether and calcium oxide are 1: 1 mixture in mass ratio.
3. the mortar for exterior of the ultra-fine sand of usefulness according to claim 1 preparation, it is characterized in that: described polymer modifiers is that acrylic rubber powder, polyvinyl alcohol rubber powder or acrylic rubber powder and polyvinyl alcohol rubber powder are 1: 1 mixture in mass ratio.
4. the mortar for exterior of the ultra-fine sand of usefulness according to claim 1 preparation, it is characterized in that: described water-holding agent is that TYLOSE 30000, hydroxypropyl methyl cellulose ether or TYLOSE 30000 and hydroxypropyl methyl cellulose ether are 2: 1 mixture in mass ratio.
5. the mortar for exterior of the ultra-fine sand of usefulness according to claim 1 preparation, it is characterized in that: described fiber is that polypropylene fibre, vinylon fiber or polypropylene fibre and vinylon fiber are 1: 3 mixture in mass ratio.
6. the mortar for exterior of the ultra-fine sand of usefulness according to claim 1 preparation, it is characterized in that: described cement is 32.5 or 42.5 ordinary Portland cements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528225.5A CN102976693B (en) | 2012-12-10 | 2012-12-10 | Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528225.5A CN102976693B (en) | 2012-12-10 | 2012-12-10 | Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102976693A true CN102976693A (en) | 2013-03-20 |
| CN102976693B CN102976693B (en) | 2014-05-14 |
Family
ID=47851104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210528225.5A Active CN102976693B (en) | 2012-12-10 | 2012-12-10 | Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102976693B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987023A (en) * | 2015-07-09 | 2015-10-21 | 石狮国高电子科技有限公司 | Insulating and anti-cracking combination sand board prepared through power plant waste residues and production technology thereof |
| CN105130273A (en) * | 2015-07-10 | 2015-12-09 | 常州市诺金精密机械有限公司 | Modified oil-resistant emery board produced from power plant waste residues, and production technology thereof |
| CN106396548A (en) * | 2016-08-31 | 2017-02-15 | 武汉理工大学 | Impact-resistant and corrosion-proof cement-based composite material and preparation method thereof |
| CN108373301A (en) * | 2018-03-08 | 2018-08-07 | 代彦霞 | A kind of environmental protection anti-crack concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195529A (en) * | 2007-12-17 | 2008-06-11 | 重庆大学 | Heat preserving crack resistant mortar for exterior wall |
-
2012
- 2012-12-10 CN CN201210528225.5A patent/CN102976693B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195529A (en) * | 2007-12-17 | 2008-06-11 | 重庆大学 | Heat preserving crack resistant mortar for exterior wall |
Non-Patent Citations (1)
| Title |
|---|
| 彭家惠等: "减缩剂和膨胀剂对水泥基自流平砂浆收缩开裂性能的影响比较研究", 《重庆建筑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987023A (en) * | 2015-07-09 | 2015-10-21 | 石狮国高电子科技有限公司 | Insulating and anti-cracking combination sand board prepared through power plant waste residues and production technology thereof |
| CN105130273A (en) * | 2015-07-10 | 2015-12-09 | 常州市诺金精密机械有限公司 | Modified oil-resistant emery board produced from power plant waste residues, and production technology thereof |
| CN106396548A (en) * | 2016-08-31 | 2017-02-15 | 武汉理工大学 | Impact-resistant and corrosion-proof cement-based composite material and preparation method thereof |
| CN108373301A (en) * | 2018-03-08 | 2018-08-07 | 代彦霞 | A kind of environmental protection anti-crack concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102976693B (en) | 2014-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101386506B (en) | Light heat insulating mortar | |
| CN110272244B (en) | Crack-resistant concrete and preparation process thereof | |
| CN103159440B (en) | Cement based ungauged regions wall-through hole plugging material and preparation method thereof and constructional method | |
| CN100453496C (en) | Mortar | |
| CN102372476B (en) | Inorganic thermal insulation light mortar and construction method thereof | |
| CN101407392B (en) | Inorganic heat-insulating mortar for light insulating brick masonry and preparation thereof | |
| CN102424560B (en) | Waterproof crack-resistant inorganic heat-insulating mortar and preparation method thereof | |
| CN110054461B (en) | Environment-friendly anti-cracking high-weather-resistance external thermal insulation plastering mortar and preparation method thereof | |
| CN103073246B (en) | Special masonry binder for autoclaved aerated concrete | |
| CA2737966A1 (en) | Composite structure for exterior insulation applications | |
| CN104829189B (en) | Phase-change energy-storing composite foam concrete block | |
| CN101898886B (en) | Interface treating mortar for thermal insulation system | |
| CN101475345A (en) | Cement based polymer heat preserving dry powder mortar and using method thereof | |
| CN106145827A (en) | A kind of ceramic tile bond | |
| CN104591612A (en) | Heat-insulating building mortar | |
| CN101104551A (en) | Steel slag heat-insulating finishing mortar | |
| CN107337408A (en) | A kind of wear-resisting antiseepage composite mortar of cracking resistance and preparation method thereof | |
| CN101508539B (en) | Polymer glue powder and method of use thereof | |
| CN102976693B (en) | Outer-wall external thermal-insulation anti-crack mortar prepared from superfine sand | |
| CN108793935B (en) | Precast dry material sprayed concrete | |
| CN103224363A (en) | Flexible anti-cracking protective mortar and preparation method thereof | |
| CN103553542A (en) | Thermal insulation waterproof daub and preparation method thereof | |
| CN102126845A (en) | Cement plastering mortar | |
| CN102826811B (en) | Bonding powder expanded polystyrene granule insulating mortar suitable for thick plastering and compacting construction | |
| CN104829179B (en) | White glass bead modification heat-insulating masonry mortar and using method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210723 Address after: 401443 community 4, Anwen village, Anwen Town, Qijiang District, Chongqing Patentee after: Chongqing Yuju Environmental Protection Technology Co.,Ltd. Address before: 400030 11-4, No. 8-1, shazheng street, Shapingba District, Chongqing Patentee before: CHONGQING JIANDA BUILDING MATERIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |