CN104150802A - Synthesis method of crystal nucleus for promoting high-belite cement hydration progress - Google Patents
Synthesis method of crystal nucleus for promoting high-belite cement hydration progress Download PDFInfo
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- CN104150802A CN104150802A CN201410357290.5A CN201410357290A CN104150802A CN 104150802 A CN104150802 A CN 104150802A CN 201410357290 A CN201410357290 A CN 201410357290A CN 104150802 A CN104150802 A CN 104150802A
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- nucleus
- belite cement
- crystal nucleus
- high belite
- cement
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Abstract
The invention discloses a synthesis method of crystal nucleus for promoting a high-belite cement hydration progress. The selected materials comprise slaked lime, kieselguhr and high-belite cement. The method comprises the following steps: evenly mixing slaked lime and kieselguhr; putting the mixture into an autoclave, and synthesizing to obtain the synthetic C-S-H crystal nucleus; drying the synthetic C-S-H crystal nucleus in a drying box, and sufficiently grinding the dried C-S-H crystal nucleus in a vibromill; and finally, uniformly doping the ground C-S-H crystal nucleus into the high-belite cement for use. The C-S-H crystal nucleus doped into the high-belite cement can promote the high-belite cement hydration progress and enhance the early strength of the high-belite cement. By doping the synthetic crystal nucleus into the high-belite cement, the 3D compression strength is enhanced by 30%, thereby well solving the problem of limited application range due to slow hydration progress and low early strength of the high-belite cement.
Description
Technical field
The present invention relates to a kind of synthetic method of nucleus, specifically a kind of synthetic method that promotes the nucleus of high belite hydrated cementitious process.
Background technology
China's Cement industry scale is large, output is high, energy consumption is high, CO
2isothermal chamber gas emissions is large, starts the large tide of energy-saving and emission-reduction and more and more pay attention under the overall background of development quality and benefit now in the whole world, and upgrading transition of traditional Cement industry is extremely urgent with structural adjustment.Within 2012, China's cement output has reached 21.84 hundred million tons, and wherein the cement clinker through more than 1400 ℃ high-temperature firing accounts for more than 80%.As developing country, the sustainable development of China's economy is estimated will have significantly and increase in 20 years to the demand of cement, and Cement industry Development patterns Jiang Shi China energy of this quantitative expansion, resources and environment can't bear the heavy load.High belite cement can solve the problem of general purpose portland cement maximum discharge high energy consumption, give full play to the advantages such as low-calcium silicate cement hydration heat is low, drying shrinkage is little, can meet priority project to the high durable active demand of cement concrete, can reduce the resources and energy consumption in cement production process again, reduce CO
2, SO
2, NO
xdeng gaseous emission, drive the Transformation Development of Cement industry, but high belite hydrated cementitious advance ratio is slower, early strength is on the low side and use range is limited.
Summary of the invention
The object of the present invention is to provide a kind of synthetic method that promotes the nucleus of high belite hydrated cementitious process, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
Promote a synthetic method for the nucleus of high belite hydrated cementitious process, select materials comprises slaked lime, diatomite and high belite cement;
The concrete steps of the synthetic method of the nucleus of described promotion high belite hydrated cementitious process are as follows:
(1) slaked lime and diatomite are pressed respectively to CaO and SiO
2mass ratio be 1: 1 ratio takes, the mixture weighing up is stirred, mix and minute carry out several times;
(2) mixed bi-material is inserted to autoclave and synthesize, synthesis pressure is 0.3MPa, and generated time is 6 hours, obtains synthetic C-S-H nucleus;
(3) synthetic C-S-H nucleus is put into drying baker and dries, it is fully levigate that the C-S-H nucleus after oven dry is put into vibration mill, is milled down to specific surface area and is greater than 400m
2/ kg;
(4) the C-S-H nucleus after levigate is evenly incorporated in high belite cement, can uses, the C-S-H nucleus after levigate and the mass ratio of high belite cement 6: 100.
As the further scheme of the present invention: the bake out temperature in described step (3) is set as 65 ℃, and drying time is 100min.
As the present invention's scheme further: the C-S-H nucleus after levigate in described step (4) and the method for mixing of high belite cement are dry mixing.
Compared with prior art, the invention has the beneficial effects as follows: synthetic C-S-H nucleus is with post-drying, after being used vibration mill levigate, be incorporated into by a certain percentage in high belite cement, can promote the aquation process of high belite cement, improve high belite cement early strength, synthetic nucleus 6% is incorporated in high belite cement in mass ratio, make 3d ultimate compression strength improve 30%, 7d ultimate compression strength improves 28%, , 28d ultimate compression strength improves 11%, it is slower well to solve high belite hydrated cementitious advance ratio high, early strength is on the low side and problem that use range is limited.
Accompanying drawing explanation
Fig. 1 is the SEM phenogram of C-S-H nucleus.
Fig. 2 is the petrofacies of the cement clinker fired.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1～2, in the embodiment of the present invention, a kind of synthetic method that promotes the nucleus of high belite hydrated cementitious process, select materials comprises that slaked lime (contained CaO content is 49%), diatomite are (containing SiO
2content is 69%) and high belite cement;
The concrete steps of the synthetic method of the nucleus of described promotion high belite hydrated cementitious process are as follows:
(1) slaked lime and diatomite are pressed respectively to CaO and SiO
2mass ratio be 1: 1 ratio takes, the mixture weighing up is stirred, mix and minute carry out several times, object is fully mixed bi-material;
(2) mixed bi-material is inserted to autoclave and synthesize, synthesis pressure is 0.3MPa, and generated time is 6 hours, obtains synthetic C-S-H nucleus;
(3) synthetic C-S-H nucleus is put into drying baker and dries, bake out temperature is set as 65 ℃, and drying time is 100min, and it is fully levigate that the C-S-H nucleus after oven dry is put into vibration mill, is milled down to specific surface area and is greater than 400m
2/ kg;
(4) the C-S-H nucleus after levigate is evenly incorporated in high belite cement, the C-S-H nucleus after levigate and the mass ratio of high belite cement 6: 100, the method for mixing is dry mixing.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other specific form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a synthetic method that promotes the nucleus of high belite hydrated cementitious process, is characterized in that, select materials comprises slaked lime, diatomite and high belite cement;
(1) slaked lime and diatomite are pressed respectively to CaO and SiO
2mass ratio be 1: 1 ratio takes, the mixture weighing up is stirred, mix and minute carry out several times;
(2) mixed bi-material is inserted to autoclave and synthesize, synthesis pressure is 0.3MPa, and generated time is 6 hours, obtains synthetic C-S-H nucleus;
(3) synthetic C-S-H nucleus is put into drying baker and dries, it is fully levigate that the C-S-H nucleus after oven dry is put into vibration mill, is milled down to specific surface area and is greater than 400m
2/ kg;
(4) the C-S-H nucleus after levigate is evenly incorporated in high belite cement, can uses, the C-S-H nucleus after levigate and the mass ratio of high belite cement 6: 100.
2. a kind of synthetic method that promotes the nucleus of high belite hydrated cementitious process according to claim 1, is characterized in that, the bake out temperature in described step (3) is set as 65 ℃, and drying time is 100min.
3. a kind of synthetic method that promotes the nucleus of high belite hydrated cementitious process according to claim 1, is characterized in that, the C-S-H nucleus after levigate in described step (4) and the method for mixing of high belite cement are dry mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357290.5A CN104150802B (en) | 2014-07-17 | 2014-07-17 | Synthesis method of crystal nucleus for promoting high-belite cement hydration progress |
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|---|---|---|---|
| CN201410357290.5A CN104150802B (en) | 2014-07-17 | 2014-07-17 | Synthesis method of crystal nucleus for promoting high-belite cement hydration progress |
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| CN104150802A true CN104150802A (en) | 2014-11-19 |
| CN104150802B CN104150802B (en) | 2017-04-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753000A (en) * | 2016-02-29 | 2016-07-13 | 同济大学 | Preparation method and application method of hydrated calcium silicate seed crystal |
| CN105777006A (en) * | 2016-03-14 | 2016-07-20 | 同济大学 | Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile |
| CN107207342A (en) * | 2015-01-19 | 2017-09-26 | 葡萄牙辛珀水泥Sgps股份公司 | The hydraulic binder and its manufacture method of amorphous state low calcium content silicate |
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| US4946504A (en) * | 1988-08-19 | 1990-08-07 | Concrete Technology Corporation | Cement building material |
| JPH07291616A (en) * | 1994-04-26 | 1995-11-07 | Sumitomo Metal Mining Co Ltd | Production of crystalline calcium silicate hydrate |
| CN1232000A (en) * | 1998-04-16 | 1999-10-20 | 北京市海淀区博奥新材料技术研究所 | Method for producing artificial admixture for cement and concrete, products thereby and use thereof |
| CN101182000A (en) * | 2007-11-21 | 2008-05-21 | 哈尔滨工业大学 | Hydrated calcium silicate as well as preparation method thereof and concrete anti-freeze agent containing the same |
| CN102786246A (en) * | 2012-08-31 | 2012-11-21 | 句容宁武高新技术发展有限公司 | Concrete antifreezer |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946504A (en) * | 1988-08-19 | 1990-08-07 | Concrete Technology Corporation | Cement building material |
| JPH07291616A (en) * | 1994-04-26 | 1995-11-07 | Sumitomo Metal Mining Co Ltd | Production of crystalline calcium silicate hydrate |
| CN1232000A (en) * | 1998-04-16 | 1999-10-20 | 北京市海淀区博奥新材料技术研究所 | Method for producing artificial admixture for cement and concrete, products thereby and use thereof |
| CN101182000A (en) * | 2007-11-21 | 2008-05-21 | 哈尔滨工业大学 | Hydrated calcium silicate as well as preparation method thereof and concrete anti-freeze agent containing the same |
| CN102786246A (en) * | 2012-08-31 | 2012-11-21 | 句容宁武高新技术发展有限公司 | Concrete antifreezer |
Non-Patent Citations (1)
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| 王政等: "水化硅酸钙晶种的制备及对水泥强度的影响", 《材料科学与工艺》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107207342A (en) * | 2015-01-19 | 2017-09-26 | 葡萄牙辛珀水泥Sgps股份公司 | The hydraulic binder and its manufacture method of amorphous state low calcium content silicate |
| CN105753000A (en) * | 2016-02-29 | 2016-07-13 | 同济大学 | Preparation method and application method of hydrated calcium silicate seed crystal |
| CN105777006A (en) * | 2016-03-14 | 2016-07-20 | 同济大学 | Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile |
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| CN104150802B (en) | 2017-04-19 |
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