CN103803838A - Accelerator - Google Patents
Accelerator Download PDFInfo
- Publication number
- CN103803838A CN103803838A CN201410067957.8A CN201410067957A CN103803838A CN 103803838 A CN103803838 A CN 103803838A CN 201410067957 A CN201410067957 A CN 201410067957A CN 103803838 A CN103803838 A CN 103803838A
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- CN
- China
- Prior art keywords
- accelerating chemicals
- formula
- accelerator
- water
- stirring
- 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
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000004567 concrete Substances 0.000 abstract description 12
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 4
- 239000000470 constituent Substances 0.000 abstract 3
- 229920002873 Polyethylenimine Polymers 0.000 abstract 2
- 238000005303 weighing Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011378 shotcrete Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to an accelerator. The formula thereof comprises the constituents in percentage by weight: 50-55% of polyaluminium sulphate, 4-6% of polyethyleneimine, 2-5% of sodium lignosulphonate and 36-40% of water, wherein the sum of the constituents is 100%. A method for preparing the accelerator by the formula above comprises the following steps of: (1) weighing the constituents with the needed dosages according to the formula above for the future use; (2) crushing the prepared polyaluminium sulphate into fine powder, and passing through a 180-mesh sieve to obtain polyaluminium sulphate powder for the future use; and (3) dissolving the obtained polyaluminium sulphate powder in water and uniformly stirring, then adding the prepared polyethyleneimine and sodium lignosulphonate, stirring, and then pouring in a high-speed stirrer and stirring for 15-20 minutes to obtain the accelerator. The accelerator disclosed by the invention is a concrete additive which is alkali-free, free from pungent odour, good in cohesiveness, low in resilience and high in later strength preserving rate, prepared by virtue of the characteristics of each formula material, and is especially suitable for construction and use in culverts, bridges, underground projects and the like.
Description
Technical field
The invention belongs to chemical field, particularly a kind of building concrete accelerating chemicals.
Background technology
Hardenfast refers to the admixture that can make the rapid setting and harden of concrete, and accelerating chemicals mainly contains two kinds of inorganic salts and organism classes.The conventional accelerating chemicals of China is that inorganic salts accelerating chemicals mixes after concrete, can make concrete initial set in 3～6min, final set in 5～9min, 1h just can produce intensity, 1d intensity improves 2～3 times, but later strength can decline, and 28d intensity is about 70%～80% while not mixing.The rapid hardening early strength function mechanism of accelerating chemicals is to make the gypsum in cement become Na
2sO
4, lose delayed coagulation, thereby impel C
3a (tricalcium aluminate) is aquation rapidly, and in solution, separates out its hydrated product crystal, causes grout to solidify rapidly.Accelerating chemicals is mainly used in mine working, railway tunnel, diversion culvert, underground works.But existing accelerating chemicals is alkalescence more, there is certain smell and of long duration human body had to certain damage.
Summary of the invention
The object of this invention is to provide a kind of effect that can reach traditional accelerating chemicals and can reduce again the novel accelerating chemicals to human injury.
A kind of accelerating chemicals, the weight percent of its formula is: polyaluminium sulfate 50～55%, polymine 4～6%, sodium lignosulfonate 2～5%, water 36～40%; Each component sum is 100%;
The method that adopts above-mentioned formula to make accelerating chemicals is:
(1) weigh for subsequent use by above-mentioned formula by institute's expense;
(2) polyaluminium sulfate of getting ready is ground into fine powder, crosses 180 mesh sieves, obtain polyaluminum sulfate aluminium powder for subsequent use;
(3) by soluble in water the stirring of gained polyaluminum sulfate aluminium powder, then pour in high speed agitator and stir 15～20 minutes after adding the polymine got ready and sodium lignosulfonate to stir, obtain accelerating chemicals.
By the preferred weight percent that facts have proved above-mentioned accelerating chemicals formula be: polyaluminium sulfate 53%, polymine 5%, sodium lignosulfonate 4%, water 38%.
The concrete additive that accelerating chemicals of the present invention is a kind of alkali-free that utilizes the characteristic of each formula materials to prepare, non-stimulated smell, cohesiveness is good, rebound degree is low, later strength storage rate is high, is specially adapted to the constructions such as culvert, bridge, down-hole engineering and uses.
Embodiment
Accelerating chemicals is a kind of additive, and its doping level only accounts for 1%～3% of cement consumption in concrete, but can make concrete initial set in 1～3min, final set in 2～5min.To reach the object of concrete rapid coagulation in repairing or roadway.It is indispensable additive in construction of shotcrete method.Its effect is the hydration and hardening that accelerates cement, forms in a short period of time enough intensity, to guarantee the requirement of special construction.What adopt due to the traditional accelerating chemicals of China is inorganic salts accelerating chemicals, and cost is lower, but because alkalescence is stronger, human body is had to certain infringement.
The present invention, according to practical experience for many years, has developed a kind of novel accelerating chemicals, and the effect of this accelerating chemicals is suitable with inorganic salts accelerating chemicals, but to human body without any injury.The weight percent of its formula is: polyaluminium sulfate 50～55%, polymine 4～6%, sodium lignosulfonate 2～5%, water 36～40%; Each component sum is 100%.
The method that adopts above-mentioned formula to make accelerating chemicals is:
(4) weigh for subsequent use by above-mentioned formula by institute's expense;
(5) polyaluminium sulfate of getting ready is ground into fine powder, crosses 180 mesh sieves, obtain polyaluminum sulfate aluminium powder for subsequent use;
(6) by soluble in water the stirring of gained polyaluminum sulfate aluminium powder, then pour in high speed agitator and stir 15～20 minutes after adding the polymine got ready and sodium lignosulfonate to stir, obtain accelerating chemicals.
The time of coagulation of the mixing ratio of concrete novel accelerating chemicals of the present invention and the sprayed concrete of preparing and 28 days, compressive strength rate was compared as follows table:
Can find out by above-mentioned experiment contrast, preferred weight percent of the present invention is: when polyaluminium sulfate 53%, polymine 5%, sodium lignosulfonate 4%, water 38%, and all technical optimum of accelerating chemicals.
The present invention with other accelerating chemicals the concrete test result under same volume as following table:
The advantage of accelerating chemicals of the present invention is:
1. with the sprayed concrete of concrete novel accelerating chemicals preparation of the present invention, can meet spraying operation requirement the time of coagulation of cement, and rebound degree is low, and later strength is high, and 28 days compressive strength rates all can reach more than 80%.
2. the present invention is take polyaluminium sulfate and polymine as Main Components, the advantage of its existing other accelerating chemicals, and alkalinity is extremely low, and later stage ultimate compression strength reduces little advantage, has overcome again other accelerating chemicals short shortcoming storage period.
Claims (2)
1. an accelerating chemicals, is characterized in that: the weight percent of described accelerating chemicals formula is: polyaluminium sulfate 50～55%, polymine 4～6%, sodium lignosulfonate 2～5%, water 36～40%; Each component sum is 100%;
The method that adopts above-mentioned formula to make accelerating chemicals is:
Weigh for subsequent use by above-mentioned formula by institute's expense;
The polyaluminium sulfate of getting ready is ground into fine powder, crosses 180 mesh sieves, obtain polyaluminum sulfate aluminium powder for subsequent use;
By soluble in water the stirring of gained polyaluminum sulfate aluminium powder, then pour in high speed agitator and stir 15～20 minutes after adding the polymine got ready and sodium lignosulfonate to stir, obtain accelerating chemicals.
2. accelerating chemicals as claimed in claim 1, is characterized in that: the preferred weight percent of described accelerating chemicals formula is: polyaluminium sulfate 53%, polymine 5%, sodium lignosulfonate 4%, water 38%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067957.8A CN103803838B (en) | 2014-02-27 | 2014-02-27 | A kind of accelerating chemicals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067957.8A CN103803838B (en) | 2014-02-27 | 2014-02-27 | A kind of accelerating chemicals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103803838A true CN103803838A (en) | 2014-05-21 |
| CN103803838B CN103803838B (en) | 2015-08-12 |
Family
ID=50701285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410067957.8A Active CN103803838B (en) | 2014-02-27 | 2014-02-27 | A kind of accelerating chemicals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103803838B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481280A (en) * | 2015-11-06 | 2016-04-13 | 湖北工业大学 | Alkali-free chlorine-free setting accelerator based on PASiC and/or PASSi |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407954A (en) * | 1999-12-08 | 2003-04-02 | Mbt控股有限公司 | Preparation of concrete accelerator |
| CN102219426A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Low-alkaline liquid accelerating agent and preparation method thereof |
| CN103241972A (en) * | 2012-02-05 | 2013-08-14 | 张云侠 | Preparation method for sodium aluminate concrete accelerator |
| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
-
2014
- 2014-02-27 CN CN201410067957.8A patent/CN103803838B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407954A (en) * | 1999-12-08 | 2003-04-02 | Mbt控股有限公司 | Preparation of concrete accelerator |
| CN102219426A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Low-alkaline liquid accelerating agent and preparation method thereof |
| CN103241972A (en) * | 2012-02-05 | 2013-08-14 | 张云侠 | Preparation method for sodium aluminate concrete accelerator |
| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 兰明章等: "用硫酸铝配制混凝土速凝剂的研究现状", 《混凝土》 * |
| 宋敬亮等: "硫酸铝型混凝土速凝剂的研究现状", 《公路交通科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481280A (en) * | 2015-11-06 | 2016-04-13 | 湖北工业大学 | Alkali-free chlorine-free setting accelerator based on PASiC and/or PASSi |
| CN105481280B (en) * | 2015-11-06 | 2018-01-02 | 湖北工业大学 | A kind of alkali-free chlorine-free accelerator based on PASiC and/or PASSi |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103803838B (en) | 2015-08-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 138, Qingyuan community democracy group, Sancha Town, Bozhou District, Zunyi City, Guizhou Province Patentee after: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Address before: 563101 Guizhou city of Zunyi province Sancha town Zunyi County Bai village Patentee before: ZUNYI HENGXIN CHEMICAL Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Accelerator Effective date of registration: 20211207 Granted publication date: 20150812 Pledgee: Guizhou Zunyi Rural Commercial Bank Co.,Ltd. Pledgor: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Registration number: Y2021980014389 |
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Date of cancellation: 20230330 Granted publication date: 20150812 Pledgee: Guizhou Zunyi Rural Commercial Bank Co.,Ltd. Pledgor: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Registration number: Y2021980014389 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A type of accelerator Effective date of registration: 20230407 Granted publication date: 20150812 Pledgee: Guizhou Zunyi Rural Commercial Bank Co.,Ltd. Pledgor: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Registration number: Y2023980037618 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230428 Granted publication date: 20150812 Pledgee: Guizhou Zunyi Rural Commercial Bank Co.,Ltd. Pledgor: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Registration number: Y2023980037618 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A rapid setting agent Effective date of registration: 20231227 Granted publication date: 20150812 Pledgee: Guizhou Bank Co.,Ltd. Zunyi Honghuagang Branch Pledgor: Guizhou zunhui Environmental Protection Technology Co.,Ltd. Registration number: Y2023520000075 |