CN104058623A - Thickening time control agent and portland cement with same - Google Patents
Thickening time control agent and portland cement with same Download PDFInfo
- Publication number
- CN104058623A CN104058623A CN201410319336.4A CN201410319336A CN104058623A CN 104058623 A CN104058623 A CN 104058623A CN 201410319336 A CN201410319336 A CN 201410319336A CN 104058623 A CN104058623 A CN 104058623A
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- China
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- control agent
- time control
- solidification agent
- adjustable solidification
- cement
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Provided are a thickening time control agent and portland cement with the thickening time control agent. The portland cement is formed by mixing the portland cement clinker and the hickening time control agent according to the ratio being 98-99:1-2; the hickening time control agent is formed by mixing 70%-80% of calcium nitrate, 5%-20% of tartaric acid, 5%-20% of citric acid and 5%-10% of ATMP. According to the thickening time control agent, a thickening time control agent belonging to the sulfate series is omitted, mixtures of the calcium nitrate, the tartaric acid, the citric acid and the ATMP are used as the thickening time control agent of the cement, no ettringite is produced in a hydration process of the cement, and therefore the required water amount of the cement is greatly reduced and the standard normal consistency is decreased.
Description
Technical field
The present invention relates to a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent, particularly a kind of adjustable solidification agent and there is the low denseness silicate cement of this adjustable solidification agent.
Background technology
As everyone knows, silicate cement is to use gypsum as its adjustable solidification agent, tricalcium aluminate hydration rate in silicate cement is fast, gypsum can dissolve fast and gel reaction rapid and that tricalcium aluminate aquation produces generates ettringite, wrap in tricalcium aluminate mineral grain surface and play isolated water, delay tricalcium aluminate and continue aquation.But in ettringite, contain 32 crystal water, while generating ettringite, need a large amount of water, and in the process that generates ettringite, be accompanied by the release of amount of heat, therefore gypsum as the shortcoming of adjustable solidification agent is: water requirement causes greatly strength of cement to be difficult to increase substantially, the concentrated release of amount of heat is unfavorable for the stress control of cement products inside, easily causes the macroscopic defectss such as crackle.
Summary of the invention
The object of the invention is to provide a kind of adjustable solidification agent and has the silicate cement of this adjustable solidification agent.
For achieving the above object, the first technical scheme that the present invention adopts is: a kind of adjustable solidification agent, is made after mixing by the starting material of following mass percent:
Nitrocalcite 70～80%;
Tartrate 5～20%;
Citric acid 5～20%;
Amino Trimethylene Phosphonic Acid 5～10%.
For achieving the above object, the second technical scheme that the present invention adopts is: a kind of silicate cement, makes after being mixed by Portland clinker and adjustable solidification agent according to the mass ratio of 98～99:1～2; Described adjustable solidification agent is made after mixing by the starting material of following mass percent:
Nitrocalcite 70～80%;
Tartrate 5～20%;
Citric acid 5～20%;
Amino Trimethylene Phosphonic Acid 5～10%.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The adjustable solidification agent of abandoning vitriol series of the present invention, use the mixture of nitrocalcite, tartrate, citric acid, Amino Trimethylene Phosphonic Acid (ATMP) as the adjustable solidification agent of cement, owing to there is no the generation of ettringite in cement hydration process, the water requirement of cement greatly reduces, and standard consistency declines.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment mono-: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 75%, tartrate 10%, citric acid 10%, Amino Trimethylene Phosphonic Acid (ATMP) 5%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 1.5:98.5, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 20%.And the standard consistency of the ordinary Portland cement of prior art is 29% left and right.
Embodiment bis-: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 80%, tartrate 8%, citric acid 5%, Amino Trimethylene Phosphonic Acid (ATMP) 7%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 2:98, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 21%.
Embodiment tri-: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 70%, tartrate 20%, citric acid 5%, Amino Trimethylene Phosphonic Acid (ATMP) 5%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 1:99, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 22%.
Embodiment tetra-: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 70%, tartrate 5%, citric acid 20%, Amino Trimethylene Phosphonic Acid (ATMP) 5%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 1:99, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 22%.
Embodiment five: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 70%, tartrate 10%, citric acid 10%, Amino Trimethylene Phosphonic Acid (ATMP) 10%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 2:98, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 21%.
Embodiment six: a kind of adjustable solidification agent and there is the silicate cement of this adjustable solidification agent
The mass percent of adjustable solidification agent is: nitrocalcite 72%, tartrate 12%, citric acid 8%, Amino Trimethylene Phosphonic Acid (ATMP) 8%.In silicate cement, adjustable solidification agent and Portland clinker mass ratio is between the two: 1.5:98.5, be initial set 125min the time of coagulation of this silicate cement, final set 145min.Standard consistency 20%.And the standard consistency of the ordinary Portland cement of prior art is 29% left and right.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. an adjustable solidification agent, is characterized in that: the starting material by following mass percent make after mixing:
Nitrocalcite 70～80%;
Tartrate 5～20%;
Citric acid 5～20%;
Amino Trimethylene Phosphonic Acid 5～10%.
2. a silicate cement, is characterized in that: after being mixed according to the mass ratio of 98～99:1～2 by Portland clinker and adjustable solidification agent, make; Described adjustable solidification agent is made after mixing by the starting material of following mass percent:
Nitrocalcite 70～80%;
Tartrate 5～20%;
Citric acid 5～20%;
Amino Trimethylene Phosphonic Acid 5～10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319336.4A CN104058623A (en) | 2014-07-07 | 2014-07-07 | Thickening time control agent and portland cement with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319336.4A CN104058623A (en) | 2014-07-07 | 2014-07-07 | Thickening time control agent and portland cement with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104058623A true CN104058623A (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410319336.4A Pending CN104058623A (en) | 2014-07-07 | 2014-07-07 | Thickening time control agent and portland cement with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104058623A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103649005A (en) * | 2011-07-08 | 2014-03-19 | 霍尔辛姆科技有限公司 | Hydraulic binder |
| CN104030644A (en) * | 2014-06-09 | 2014-09-10 | 中国铁道科学研究院铁道建筑研究所 | Polymer cement mortar for slab ballastless track of high-speed railway |
-
2014
- 2014-07-07 CN CN201410319336.4A patent/CN104058623A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103649005A (en) * | 2011-07-08 | 2014-03-19 | 霍尔辛姆科技有限公司 | Hydraulic binder |
| CN104030644A (en) * | 2014-06-09 | 2014-09-10 | 中国铁道科学研究院铁道建筑研究所 | Polymer cement mortar for slab ballastless track of high-speed railway |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |
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| RJ01 | Rejection of invention patent application after publication |