CN104788029A - Rapid hardening Portland cement and preparation method thereof - Google Patents
Rapid hardening Portland cement and preparation method thereof Download PDFInfo
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- CN104788029A CN104788029A CN201510125359.6A CN201510125359A CN104788029A CN 104788029 A CN104788029 A CN 104788029A CN 201510125359 A CN201510125359 A CN 201510125359A CN 104788029 A CN104788029 A CN 104788029A
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- Prior art keywords
- portland cement
- quick hardening
- preparation
- percent
- hardening portland
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- 239000011398 Portland cement Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000002893 slag Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 23
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011777 magnesium Substances 0.000 claims abstract description 21
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 21
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 10
- 239000010440 gypsum Substances 0.000 claims abstract description 10
- 239000011449 brick Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 239000011505 plaster Substances 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H Aluminium sulfate Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 6
- NNHHDJVEYQHLHG-UHFFFAOYSA-N Potassium silicate Chemical group [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 5
- 239000004111 Potassium silicate Substances 0.000 claims description 5
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000004566 building material Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000701 coagulant Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 16
- 239000003469 silicate cement Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium(0) Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The invention provides rapid hardening Portland cement and a preparation method thereof, and relates to the field of building materials. The rapid hardening Portland cement comprises the following components in percent by mass: (1) 60.0-75.0 percent of a Portland cement clinker; (2) 3.0-10.0 percent of salty mud; (3) 3.0-10.0 percent of magnesium slag; (4) 3.0-10.0 percent of brick and tile powder; (5) 3.0-10.0 percent of waste casting sand; (6) 2.0-5.0 percent of a coagulating agent; (7) 2.5-5.0 percent of gypsum. The preparation method comprises the following steps: (1) material preparation; (2) crushing; (3) pre-mixing; (4) power grinding. The rapid hardening Portland cement provided by the invention has the characteristics of being quick in hardening rate, high in early strength and stable in long-term strength;, s a variety of wastes are effectively utilized, so that the preparation method is a relatively ideal resource recycling mode.
Description
Technical field
The invention belongs to building material field, particularly the preparation method of a kind of quick hardening Portland cement and this cement.
Background technology
Quick hardening Portland cement is the silicate cement that a kind of hardening rate is high.It has the advantages that hardening rate is fast, hardening strength is high, in several hours, get final product final set, and early strength rises very fast, has the feature of early strengthening and high strengthening.Therefore, use when being commonly used for patching material or accelerating construction progress, not only reduce the time, and improve engineering and quality of item, there is good technical economic benefit and social benefit.
Application number is the patent documentation " magnesium slag composite silicate hydraulic cementing gelate material " of 200710200830.9; disclose a kind of silicate cement mud material; its preparation method is by the raw material of following weight parts proportioning; magnesium-smelting reduction slag 41-55 part; Portland clinker 15-33 part; gypsum 1-8 part; flyash or cinder; or/and granulated blast-furnace slag 5-20 part, the levigate hydraulic cementing materials based on magnesium slag composite silicate that can be used for building use directly made technical indicator and meet " composite Portland cement " standard after mixing.It can thus be appreciated that, this silicate cement utilizes magnesium slag, the recycling of waste resource on the one hand, on the other hand, by the composition in magnesium slag, particularly magnesium oxide, improves the hydraulicity speed of silicate cement, and can improve its intensity in earlier stage, therefore, this cement has certain fast hard and early strong performance, but also can find, the content of its magnesium slag accounts for 50% of total mass, although early stage intensity is better, but do not have the coagulation of cement clinker and gypsum, the intensity in its later stage is lower, and longterm strength can not meet the demands.
Application number is the patent documentation " a kind of novel rapid hardening steel slag cement " of 200910229285.5, discloses a kind of quick hardening Portland cement, the cement of to be a kind of with slag be main raw material, and its raw material weight proportioning is: slag 30-50%; Silicate cement 20-40%; Gypsum 10-20%; Tai-Ace S 150 2-5%; Magnesium chloride 2-5%; Barium containing sulpho-ferro-aluminate cement 10-20%.From this technical scheme, slag too high levels in component, slag is when reality uses, its addition generally all can be restricted, and more than 8%, it starts to occur negative impact to the performance of cement, in conjunction with the interaction of other components, its maximum addition is generally no more than 20%, therefore, the slag of 30-50%, can have a strong impact on later strength and the corrosion resistant performance of cement.In addition, the add-on of gypsum in cement generally all can have control, can accelerate hardening rate although too high, but intensity can be subject to obvious impact, in this technical scheme, joining of gypsum reaches 10-20%, therefore, the early strength of this cement is lower, and later strength also can be affected.
Summary of the invention
The technical problem that the present invention solves: for above-mentioned deficiency, overcome the defect of prior art, the object of this invention is to provide a kind of quick hardening Portland cement and preparation method thereof.
Technical scheme of the present invention: a kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) Portland clinker 60.0%-75.0%;
(2) salt slurry 3.0%-10.0%;
(3) magnesium slag 3.0%-10.0%;
(4) brick and tile powder 3.0%-10.0%;
(5) useless casting sand 3.0%-10.0%;
(6) setting accelerator 2.0%-5.0%;
(7) gypsum 2.5%-5.0%.
As preferably, described Portland clinker is low alkali portland cement grog.
As preferably, described setting accelerator is potassium silicate or Tai-Ace S 150.
As preferably, described gypsum is desulfurated plaster.
A preparation method for quick hardening Portland cement, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 100-150um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 30-60um to median size, namely obtains quick hardening Portland cement.
As preferably, in step (4), the median size of quick hardening Portland cement is 30-50um.
Beneficial effect: quick hardening Portland cement provided by the invention is the moderate silicate cement of a kind of hardening rate.Hardening of cement speed has larger impact for forming materials and strength of cement, and generally too fast hardening rate is also unfavorable for forming materials, therefore also can impact intensity.The factor affecting quick hardening Portland cement hardening rate comprises the content of magnesium-containing compound and the content of silicate, wherein magnesium-containing compound is even more important for the impact of hardening rate, and, magnesium-containing compound also has the effect of enhancing to early strength, the content and the kind that therefore control magnesium-containing compound are the keys controlling hardening rate.The present invention adopts magnesium slag as the source of magnesium-containing compound, and after adding magnesium slag, the hardening rate of silicate cement is improved, and adds setting accelerator simultaneously, and the hardening rate of cement is more obvious.Salt slurry, brick and tile powder and useless casting sand are the industrial wastes extensively existed, and adding as aggregate in cement, effectively can improve the later strength of cement, is a kind of ideal pattern utilizing waste.
Therefore, quick hardening Portland cement provided by the invention, has the advantages that hardening rate is fast, early strength is high and longterm strength is stable, and effectively make use of multiple waste, is a kind of ideal resource reutilization mode.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
Embodiment 1:
A kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) low alkali portland cement grog 60.0%;
(2) salt slurry 5.0%;
(3) magnesium slag 10.0%;
(4) brick and tile powder 7.0%;
(5) useless casting sand 10.0%;
(6) potassium silicate 4.0%;
(7) desulfurated plaster 4%.
Prepare quick hardening Portland cement according to preparation method provided by the invention, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 150um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 60um to median size, namely obtains quick hardening Portland cement.
Embodiment 2:
A kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) low alkali portland cement grog 75.0%;
(2) salt slurry 5.0%;
(3) magnesium slag 5.0%;
(4) brick and tile powder 5.0%;
(5) useless casting sand 3.0%;
(6) potassium silicate 3.0%;
(7) desulfurated plaster 4.0%.
Prepare quick hardening Portland cement according to preparation method provided by the invention, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 150um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 60um to median size, namely obtains quick hardening Portland cement.
Embodiment 3:
A kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) low alkali portland cement grog 70.0%;
(2) salt slurry 6.0%;
(3) magnesium slag 6.0%;
(4) brick and tile powder 6.0%;
(5) useless casting sand 5.0%;
(6) Tai-Ace S 150 4.0%;
(7) desulfurated plaster 3.0%.
Prepare quick hardening Portland cement according to preparation method provided by the invention, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 120um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 40um to median size, namely obtains quick hardening Portland cement.
Embodiment 4:
A kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) low alkali portland cement grog 65.0%;
(2) salt slurry 6.0%;
(3) magnesium slag 6.0%;
(4) brick and tile powder 6.0%;
(5) useless casting sand 8.0%;
(6) Tai-Ace S 150 4.0%;
(7) desulfurated plaster 5.0%.
Prepare quick hardening Portland cement according to preparation method provided by the invention, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 120um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 40um to median size, namely obtains quick hardening Portland cement.
Embodiment 5:
A kind of quick hardening Portland cement, comprises each component of following mass percent:
(1) low alkali portland cement grog 65.0%;
(2) salt slurry 5.0%;
(3) magnesium slag 10.0%;
(4) brick and tile powder 6.0%;
(5) useless casting sand 6.0%;
(6) potassium silicate 4.0%; Or Tai-Ace S 150
(7) desulfurated plaster 4.0%.
Prepare quick hardening Portland cement according to preparation method provided by the invention, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 100um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 30um to median size, namely obtains quick hardening Portland cement.
The quick hardening Portland cement above-mentioned embodiment provided is as experimental group; Preparing quick hardening Portland cement according to the disclosed technical scheme of patent documentation " magnesium slag composite silicate hydraulic cementing gelate material " that application number is 200710200830.9, is control group; Experimental group and control group are carried out performance test respectively.
(1) time of coagulation
Carry out cement setting time test to the quick hardening Portland cement of embodiment 1-5 and control group, result is as shown in table 1 below:
The time of coagulation of table 1 quick hardening Portland cement measures (unit: min)
As seen from table, on the presetting period, the embodiment 1-5 time is longer, and control group is shorter, and wherein the presetting period of embodiment 5 is the shortest; On final setting time, embodiment 2 is the longest, and embodiment 5 is the shortest, and the initial set of embodiment 5 and the spacing of final set the shortest.
(2) compressive property
Measure the compressive property of embodiment 1-5 and control group, result is as shown in table 2:
Table 2 quick hardening Portland cement compressive property test (unit: MPa)
As seen from the above table, the intensity of embodiment 1-5 1d all reaches higher than 30MPa, and all higher than control group, wherein the intensity of embodiment 5 is the highest; In 3d intensity, embodiment 1-5 intensity enhancing is obvious, and the intensity of embodiment 1-5 reaches unanimity, and gap is little, and wherein the intensity of embodiment 5 is the highest; In 28d intensity, the Strength Changes of each group is all not obvious, and wherein the later strength of embodiment 5 is the highest.
In sum, quick hardening Portland cement provided by the invention, time of coagulation is very fast, and early strength and longterm strength all reach good level.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a quick hardening Portland cement, is characterized in that, comprises each component of following mass percent:
(1) Portland clinker 60.0%-75.0%;
(2) salt slurry 3.0%-10.0%;
(3) magnesium slag 3.0%-10.0%;
(4) brick and tile powder 3.0%-10.0%;
(5) useless casting sand 3.0%-10.0%;
(6) setting accelerator 2.0%-5.0%;
(7) gypsum 2.5%-5.0%.
2. quick hardening Portland cement according to claim 1, is characterized in that: described Portland clinker is low alkali portland cement grog.
3. quick hardening Portland cement according to claim 1, is characterized in that: described setting accelerator is potassium silicate or Tai-Ace S 150.
4. quick hardening Portland cement according to claim 1, is characterized in that: described gypsum is desulfurated plaster.
5. a preparation method for quick hardening Portland cement according to claim 1, is characterized in that, preparation process is as follows:
(1) get the raw materials ready: the mass content according to each component accurately takes each component;
(2) pulverize: phosphorus slag is carried out pulverization process, and the median size to powder is 100-150um;
(3) premix: each component is mixed, stirs;
(4) grinding: the powder material that step (3) obtains is carried out grinding, is 30-60um to median size, namely obtains quick hardening Portland cement.
6. the preparation method of quick hardening Portland cement according to claim 5, is characterized in that: in step (4), the median size of quick hardening Portland cement is 30-50um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510125359.6A CN104788029A (en) | 2015-03-23 | 2015-03-23 | Rapid hardening Portland cement and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510125359.6A CN104788029A (en) | 2015-03-23 | 2015-03-23 | Rapid hardening Portland cement and preparation method thereof |
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| CN104788029A true CN104788029A (en) | 2015-07-22 |
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| CN201510125359.6A Pending CN104788029A (en) | 2015-03-23 | 2015-03-23 | Rapid hardening Portland cement and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108726905A (en) * | 2018-07-07 | 2018-11-02 | 河源市极致知管信息科技有限公司 | A kind of aluminate cement and preparation method thereof |
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| CN101323519A (en) * | 2007-06-15 | 2008-12-17 | 贵州世纪天元矿业有限公司 | Magnesium slag composite silicate hydraulic cementing gelate material |
| CN103880310A (en) * | 2014-02-20 | 2014-06-25 | 辽宁石化职业技术学院 | Portland blast furnace slag cement and preparation method thereof |
| CN104211311A (en) * | 2014-09-11 | 2014-12-17 | 山西中条山新型建材有限公司 | Method for producing silicate cement by taking foundry waste sand as siliceous correcting raw material |
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2015
- 2015-03-23 CN CN201510125359.6A patent/CN104788029A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323519A (en) * | 2007-06-15 | 2008-12-17 | 贵州世纪天元矿业有限公司 | Magnesium slag composite silicate hydraulic cementing gelate material |
| CN103880310A (en) * | 2014-02-20 | 2014-06-25 | 辽宁石化职业技术学院 | Portland blast furnace slag cement and preparation method thereof |
| CN104211311A (en) * | 2014-09-11 | 2014-12-17 | 山西中条山新型建材有限公司 | Method for producing silicate cement by taking foundry waste sand as siliceous correcting raw material |
Non-Patent Citations (1)
| Title |
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| 韩瑞华: "盐泥处理的一种新方法", 《化工之友》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108726905A (en) * | 2018-07-07 | 2018-11-02 | 河源市极致知管信息科技有限公司 | A kind of aluminate cement and preparation method thereof |
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