CN103467046A - Polymer cement mortar and preparation method thereof - Google Patents
Polymer cement mortar and preparation method thereof Download PDFInfo
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- CN103467046A CN103467046A CN2013103835253A CN201310383525A CN103467046A CN 103467046 A CN103467046 A CN 103467046A CN 2013103835253 A CN2013103835253 A CN 2013103835253A CN 201310383525 A CN201310383525 A CN 201310383525A CN 103467046 A CN103467046 A CN 103467046A
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Abstract
The invention discloses polymer cement mortar which is characterized by comprising the following components: sulphate aluminum cement, aggregate, a polymer, an ultraviolet resistance additive and an admixture, wherein the mass percentages of the aggregate, the polymer, the ultraviolet resistance additive and the admixture are 8-10%, 10-20%, 0.5-1% and 0.5-1% respectively calculated according to the mass of the sulphate aluminum cement. Simultaneously, the invention discloses a preparation method of the polymer cement mortar. According to the cement mortar and the method, since the polymer is added to the cement mortar, the compression resistance and flexural strength of the cement mortar can be improved effectively, the elastic modulus is reduced, the bonding strength is improved, and the durability of the cement mortar is improved. Since the ultraviolet resistance additive is added, the polymer is effectively protected against aging due to damage caused by sunlight; with the adoption of the sulphate aluminum cement, the alkalinity of the cement can be greatly reduced; the degradation probability of the polymer due to the alkalinity is effectively reduced; and the performance exertion of the polymer is ensured.
Description
Technical field
The present invention relates to a kind of cement and preparation method thereof, especially relate to a kind of polymer cement mortar and preparation method thereof, belong to building material technical field.
Background technology
Cement is one of important material under construction, and the physical property of cement self determines that there is following problem in it: the contraction due to cement in solidification process, make in cement and have a large amount of spaces, crack, defects i.e.cracks, thereby cause in architectural process consolidation strength low, and the tensile strength of cement, toughness and crack resistance are also not enough, can't meet specification of quality.
In view of the problems referred to above of cement, usually by add the performance that the polymer formation matrix material improves cement in cement.But traditional polymer cement mortar due to polymkeric substance because the alkalescence of cement is degraded, reduced product performance, in addition, also certain impact on the aging generation of polymkeric substance of the ultraviolet ray in sunlight, therefore, traditional polymer cement mortar can not be applied under construction well.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of anti-folding, ultimate compression strength high, polymer cement mortar that Young's modulus is low, the polymkeric substance life-span is long and preparation method thereof.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of polymer cement mortar, it is characterized in that, comprise following component: aluminosulfate cement, aggregate, polymkeric substance, antiultraviolet additive and Additive, in the aluminosulfate cement quality, the mass percent of described aggregate, polymkeric substance, antiultraviolet additive and Additive is respectively 8-10%, 10-20%, 0.5-1% and 0.5-1%.
Further, described aggregate is at least one in quartz sand, river sand.
Described polymkeric substance is acrylic ester copolymer latex.
Described antiultraviolet additive is at least one in salicylate class, benzotriazole category, group-substituted acrylonitrile, triazines.
And described Additive is at least one in flyash, silicon ash, blast-furnace slag.
And the particle diameter of described Additive is less than 15 μ m.
A kind of preparation method of polymer cement mortar, is characterized in that, comprises the following steps:
(1) mixed cement mortar and aggregate: by aluminosulfate cement and aggregate according to proportioning claimed in claim 1 under the temperature condition of 10-30 ℃, be uniformly mixed;
(2) dispersed polymeres: by polymer dispersed in water, jitter time 10-20min;
(3) the raw material mix and blend prepared by step (1) and step (2), add antiultraviolet additive and adulterant wherein, after mixing, obtains polymer cement mortar simultaneously.
The invention has the beneficial effects as follows: the present invention by adding polymkeric substance in sand-cement slurry, and effectively the resistance to compression of reinforced cement mortar, folding strength, reduce Young's modulus, improves bonding strength, and the weather resistance that improves sand-cement slurry.And the interpolation of antiultraviolet additive; effectively protect polymkeric substance not to be subject to the aging with going bad of sunlight, and adopted aluminosulfate cement, can greatly reduce the alkalescence of cement; effectively reduce the possibility of polymkeric substance degraded because of alkalescence, guaranteed the performance of polymer performance.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to concrete introduction.
Embodiment 1:
Polymer cement mortar, comprise following component: aluminosulfate cement, quartz sand, acrylic ester copolymer latex, salicylate class and particle diameter are less than the flyash of 15 μ m, in the aluminosulfate cement quality, the mass percent that quartz sand, acrylic ester copolymer latex, salicylate class and particle diameter are less than the flyash of 15 μ m is respectively 8%, 10%, 1% and 1%.
Embodiment 2:
Polymer cement mortar comprises following component: aluminosulfate cement, quartz sand and river sand, acrylic ester copolymer latex, group-substituted acrylonitrile and particle diameter are less than flyash and the silicon ash of 15 μ m.
In the aluminosulfate cement quality, the mass percent of described quartz sand and river sand is 10%, the mass percent of acrylic ester copolymer latex is 20%, and the mass percent of group-substituted acrylonitrile is 0.5%, and described particle diameter is less than the flyash of 15 μ m and the mass percent of silicon ash is 0.5%.
Embodiment 3: polymer cement mortar comprises following component: aluminosulfate cement, river sand, acrylic ester copolymer latex, benzotriazole category and particle diameter are less than silicon ash and the blast-furnace slag of 15 μ m.
In the aluminosulfate cement quality, the mass percent of described quartz sand and river sand is 10%, the mass percent of acrylic ester copolymer latex is 15%, and the benzotriazole category mass percent is 0.8%, and described particle diameter is less than the silicon ash of 15 μ m and the mass percent of blast-furnace slag is 0.8%.
Embodiment 4: the preparation method of the described polymer cement mortar of above-described embodiment 1-3 comprises the following steps:
(1) mixed cement mortar and aggregate: by aluminosulfate cement and aggregate according to the described proportioning of embodiment 1-3 under the temperature condition of 10-30 ℃, be uniformly mixed;
(2) dispersed polymeres: by polymer dispersed in water, jitter time 10-20min;
(3) the raw material mix and blend prepared by step (1) and step (2), add antiultraviolet additive and adulterant wherein, after mixing, obtains polymer cement mortar simultaneously.
Polymer mortar prepared by the described formula of above-described embodiment 1-3 has performance perameter as shown in table 1 after tested:
Table 1:
As shown in Table 1:
1, high tension, folding strength: the tension of polymer cement mortar, folding strength are all higher than conventional cement mortar, the highest comparable Portland cement of folding strength improves 70%, ultimate compression strength comparable Portland cement improves 25%, this is mainly because polymkeric substance forms the netted friendship mode structure be interweaved after hardening in sand-cement slurry, contribute to the improvement of sand-cement slurry one-piece construction performance, its resistance to compression, flexural capacity have been improved, and the water-reduction of polymkeric substance contributes to improve the mechanical property of sand-cement slurry.
2, high cohesive strength: the interpolation of polymkeric substance, greatly increased the cohesive strength of sand-cement slurry, its comparable common sand-cement slurry improves 10%, and this is mainly because the netted film structure of polymer formation, the interface structure of sand-cement slurry can be greatly improved, its cohesive strength can be effectively improved.
3, low Young's modulus: the Young's modulus of polymer cement mortar is lower than the Young's modulus of conventional cement mortar, the minimum comparable Portland cement of its Young's modulus reduces by 30%, this is mainly the netted film structure interweaved due to polymer formation, this kind of film structure is a kind of flexible structure, can greatly reduce the Young's modulus of sand-cement slurry.
4, high intensity and weather resistance: polymkeric substance has the effect of diminishing, bleed, make the macropore of sand-cement slurry reduce, aperture increases, and has greatly improved its pore structure, improve the homogeneity of internal structure, and then improved intensity and the weather resistance of polymer cement mortar.
5, the present invention, because the cement adopted is aluminosulfate cement, greatly reduces the alkalescence of cement, effectively reduces the possibility of polymkeric substance degraded because of alkalescence, has guaranteed the performance of polymer performance.
6, the present invention is by adding the antiultraviolet additive in sand-cement slurry, and can effectively solve destruction that the ultraviolet ray in sunlight causes polymer materials, make its aging problem,
7, the present invention, owing to having added Additive in sand-cement slurry, has improved the weather resistance of sand-cement slurry greatly, has optimized the performance of sand-cement slurry.
Polymer cement mortar of the present invention can be widely used in concrete structure reinforcement and concrete repairing material.
The present invention is illustrated according to above-described embodiment, should be appreciated that above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the equivalent transformation mode obtains, within all dropping on protection scope of the present invention.
Claims (7)
1. a polymer cement mortar, it is characterized in that, comprise following component: aluminosulfate cement, aggregate, polymkeric substance, antiultraviolet additive and Additive, in the aluminosulfate cement quality, the mass percent of described aggregate, polymkeric substance, antiultraviolet additive and Additive is respectively 8-10%, 10-20%, 0.5-1% and 0.5-1%.
2. a kind of polymer cement mortar according to claim 1, is characterized in that, described aggregate is at least one in quartz sand, river sand.
3. a kind of polymer cement mortar according to claim 1, is characterized in that, described polymkeric substance is acrylic ester copolymer latex.
4. a kind of polymer cement mortar according to claim 1, is characterized in that, described antiultraviolet additive is at least one in salicylate class, benzotriazole category, group-substituted acrylonitrile, triazines.
5. a kind of polymer cement mortar according to claim 1, is characterized in that, described Additive is at least one in flyash, silicon ash, blast-furnace slag.
6. a kind of polymer cement mortar according to claim 5, is characterized in that, the particle diameter of described Additive is less than 15 μ m.
7. the preparation method of a polymer cement mortar, is characterized in that, comprises the following steps:
(1) mixed cement mortar and aggregate: by aluminosulfate cement and aggregate according to proportioning claimed in claim 1 under the temperature condition of 10-30 ℃, be uniformly mixed;
(2) dispersed polymeres: by polymer dispersed in water, jitter time 10-20min;
(3) the raw material mix and blend prepared by step (1) and step (2), add antiultraviolet additive and adulterant wherein, after mixing, obtains polymer cement mortar simultaneously.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553314A (en) * | 2018-10-26 | 2019-04-02 | 贾英新 | A kind of cement preparation method of acid rain corrosion resisting |
| CN112521104A (en) * | 2020-12-24 | 2021-03-19 | 陕西省建筑科学研究院有限公司 | Cement mortar for geogrid reinforced masonry structure |
| CN114195431A (en) * | 2021-12-16 | 2022-03-18 | 平潭智汇畅城科技有限公司 | Polymer mortar |
| CN115197418A (en) * | 2022-08-25 | 2022-10-18 | 大连理工大学盘锦产业技术研究院 | Preparation method and application of nitrogen-rich microporous organic polymer containing triazine and triazole structure |
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| JP2000159585A (en) * | 1998-11-27 | 2000-06-13 | Toagosei Co Ltd | Method for finishing cement-based base material |
| CN101648803A (en) * | 2009-06-29 | 2010-02-17 | 上海东升新材料有限公司 | Powder mortar composite for bubble lightweight concrete |
| CN102491680A (en) * | 2011-12-07 | 2012-06-13 | 中国铁道科学研究院铁道建筑研究所 | Modified acrylic resin mortar composition and preparation method thereof |
| CN102826814A (en) * | 2012-09-25 | 2012-12-19 | 湖南交泰建材有限公司 | Cement-based self-leveling mortar |
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2013
- 2013-08-28 CN CN2013103835253A patent/CN103467046A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000159585A (en) * | 1998-11-27 | 2000-06-13 | Toagosei Co Ltd | Method for finishing cement-based base material |
| CN101648803A (en) * | 2009-06-29 | 2010-02-17 | 上海东升新材料有限公司 | Powder mortar composite for bubble lightweight concrete |
| CN102491680A (en) * | 2011-12-07 | 2012-06-13 | 中国铁道科学研究院铁道建筑研究所 | Modified acrylic resin mortar composition and preparation method thereof |
| CN102826814A (en) * | 2012-09-25 | 2012-12-19 | 湖南交泰建材有限公司 | Cement-based self-leveling mortar |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553314A (en) * | 2018-10-26 | 2019-04-02 | 贾英新 | A kind of cement preparation method of acid rain corrosion resisting |
| CN112521104A (en) * | 2020-12-24 | 2021-03-19 | 陕西省建筑科学研究院有限公司 | Cement mortar for geogrid reinforced masonry structure |
| CN114195431A (en) * | 2021-12-16 | 2022-03-18 | 平潭智汇畅城科技有限公司 | Polymer mortar |
| CN115197418A (en) * | 2022-08-25 | 2022-10-18 | 大连理工大学盘锦产业技术研究院 | Preparation method and application of nitrogen-rich microporous organic polymer containing triazine and triazole structure |
| CN115197418B (en) * | 2022-08-25 | 2023-05-26 | 大连理工大学盘锦产业技术研究院 | Preparation method and application of nitrogen-rich microporous organic polymer containing triazine and triazole structures |
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Application publication date: 20131225 |