CN1041708C - Hydraulic cement set-accelerating admixtures incorporating glycols - Google Patents
Hydraulic cement set-accelerating admixtures incorporating glycols Download PDFInfo
- Publication number
- CN1041708C CN1041708C CN94113758A CN94113758A CN1041708C CN 1041708 C CN1041708 C CN 1041708C CN 94113758 A CN94113758 A CN 94113758A CN 94113758 A CN94113758 A CN 94113758A CN 1041708 C CN1041708 C CN 1041708C
- Authority
- CN
- China
- Prior art keywords
- composition
- cement
- cement composition
- admixture
- weight
- 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.)
- Expired - Fee Related
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
New set-accelerating admixtures for hydraulic cement compositions are disclosed. These admixtures incorporate known set accelerators and certain low molecular weight glycols, e.g., glycerol and ethylene glycol, are found to be surprisingly effective in decreasing the initial set time of hydraulic cements, mortars, and concretes, and are advantageous as reduced-temperature set-accelerators. Preferred embodiments of the invention may also comprise a component selected from the group consisting of certain alkanolamines and mixtures thereof.
Description
The application is the unsettled U. S. application 08/046 that proposed on April 9th, 1993,110, the part subsequent application, and 08/046,110 is again the now resigned U. S. application 07/827 that proposes on January 28th, 1992,196, subsequent application, its whole disclosures are hereby incorporated by.
The present invention relates to be used for hydraulic cement composition such as mortar, grout and concrete improvement setting accelerator.In particular, the present invention relates to novel setting accelerator and Mining with adding some low-molecular-weight polyvalent alcohol such as glycerol, ethylene glycol and glycol ether come the method for accelerated solidification.
When freezing or when using hydraulic cement composition under the temperature of freezing, should use setting accelerator.For example, temperature has a significant impact the hydration rate of portland cement, such as, during low temperature, portland cement composition setting rate is generally slow than what require, unless the accelerate hardening process.Except accelerated solidification, also wish under normal or low temperature, can increase the tempo of early strength.Can shorten the maintenance and the protection time necessary that reach the concrete prescribed strength like this.Some technology of accelerated solidification are: increase the ratio of cement in the mixed material, add hot mixture and the application setting rate as the chemical admixture and the increase grout of mixed material composition.
Some chemical setting accelerator are well-known.They comprise alkali metal hydroxide, silicate, silicofluoride, calcium formiate, sodium-chlor, calcium chloride and nitrocalcite and calcium nitrite.
Calcium chloride because its preparation easily and cheap and it can predict and have many documents and materials to the influence of cement and be widely used.Yet be similar to sodium-chlor, it has the shortcoming of corrosion reinforcing bar.Like this, it can cause the corrosion of reinforcing steel bar in the concrete.Other shortcoming of using calcium chloride comprises and reduces later stage ultimate compression strength, reduces the response to air, causes hardened concrete surface blister (Concrete Admixtures, Dodson:Van Nostrand Reinhold, 1990).
So, the purpose of this invention is to provide novel setting accelerator, it can shorten the setting time of hydraulic cement composition when low temperature, and can not cause or quicken the corrosion of refinforced cement reinforcing bar.
Another object of the present invention provides this class cement composition method of preparation and the method that shortens the hydraulic cement composition setting time is provided.
The present invention relates to hydraulicity accelerator for cement slurry composition, also relate to the cement composition that contains this class admixture and the preparation method of described cement composition.Additive composition comprises the setting accelerator component and has the short C that coagulates performance of increase setting accelerator composition with significant quantity
2-C
6Polyvalent alcohol.The invention still further relates to the method for preparing hydraulic cement composition, its method comprises the short C that coagulates performance of increase setting accelerator composition that adds the setting accelerator composition and exist with significant quantity in the cement composition that comprises the hydraulic cement jointing compound
2-C
6Polyhydroxy reactant the present invention also relates to comprise the hydraulic cement jointing compound, setting accelerator composition and the short C that coagulates performance of increase setting accelerator composition that exists with significant quantity
2-C
6The cement composition of polyhydroxy reactant.Embodiment preferred of the present invention also comprises the ingredients of a mixture that is selected from alkanolamine and they.The general formula that such alkanolamine has is:
R wherein
1And R
2Be hydroxyalkyl, and R
3Be hydrogen, hydroxyalkyl, or alkyl.The particularly preferred embodiment of the present invention mainly consist of a) basic metal or alkaline earth metal nitrite; B) C
2-C
6Polyhydroxy reactant (as defined herein), the amount of its existence can increase the short performance of coagulating of setting accelerator composition effectively; C) C
1-C
5Alkyl diethanolamine and their mixture; And d) calcium chloride, bromide, iodide, prussiate, cyanate, trinitride, thiocyanate-, thiosulphate or perchlorate.
Have been found that and comprise that the short admixture that coagulates compound and low-molecular-weight polyvalent alcohol has excellent special efficacy for the setting time that shortens hydraulic cement composition.Also find such admixture under low working temperature, promptly be lower than about 50 °F also effective especially.These low molecular weight polyols have increased the short short performance of coagulating of coagulating compound obviously.In addition, admixture of the present invention can be prepared by this way, and promptly the composition that is generated can stop the corrosion that generally is embedded in the reinforcing steel bar in the cement composition.
Term " polyol " used herein is meant 2-6 carbon, i.e. " C
2-C
6" aliphatic dibasic alcohol or trivalent alcohol.Be applicable to that polyvalent alcohol of the present invention is as ethylene glycol, glycol ether, the material of propylene glycol and glycerol.Other compound that satisfies above definition is conspicuous for the professional and technical personnel.Up to the present, do not know that also these compounds have any short characteristic of coagulating, promptly they are to be used as grinding aid and retardant use at first.For this reason, people do not recognize that these compounds have any value as the part setting accelerator.Make that the inventor is taken aback be polyvalent alcohol described herein and setting accelerator compound common application the time, with shortly comparing with fixed attention of joining independent setting accelerator in the cement composition to be obtained, it has increased the short of cement composition significantly and has coagulated.The present invention uses polyhydroxy reactant to obtain the short of cement composition to comprise that with fixed attention required " assist " is with fixed attention short like this.
Term used herein " cement composition " refers to grout, mortar and concrete composition, and it comprises the hydraulic cement jointing compound.Above-mentioned term is a technical term.Grout is by hydraulic cement jointing compound portland cement for example, separately or with flyash, silicon ash or blast-furnace slag combines and water is formed mixture; Mortar is to comprise that in addition the grout of fine aggregate and concrete are the mortars that comprises coarse aggregate in addition.This based composition also can comprise other additive such as defoamer in addition, air entrapment agent or getter, retardant, water reducer, superplasticizer and other those admixtures that are used to change the composition characteristic commonly known in the art.The preparation of cement composition of the present invention is some material by will the amount of requirement, as hydraulic cement, and water, thin or coarse aggregate mixes, and it can be used as the special cement composition.
The setting accelerator composition can be any compound, when it is added in the cement composition (as mentioned above), can shortens cement composition and harden the needed time.For example, spendable basic metal or alkaline earth salt are the salt of organic or inorganic acid.Although following catalogue does not also mean that restriction.But the example of compound is an alkali metal or alkaline earth metal nitrate like this, nitrite, and formate; The basic metal of seven races' halogen and pseudohalogen acid or alkaline earth salt, such as, basic metal or alkaline earth metal chloride, bromide, iodide, prussiate, cyanate, trinitride, and thiocyanate-; Basic metal or alkaline-earth metal thiosulphate and perchlorate; With basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide are such as sodium hydroxide.Calcium salt is good especially, nitrocalcite particularly, calcium chloride, calcium formiate, and calcium nitrite.
The mixture of using basic metal or alkaline earth salt also is feasible, for example, and the mixture of nitrocalcite and calcium nitrite.Ratio between the used salt can be arbitrarily; The mixture of spendable preferred nitrocalcite/calcium nitrite, its part by weight scope approximately is 1: 3-3: 1.The contriver finds to use nitrocalcite/calcium nitrite mixture and helps stoping the corrosion that generally is embedded in the reinforcing steel bar in the cement composition as this class admixture of setting accelerator composition.
If join setting accelerator composition and polyhydroxy reactant in the cement composition respectively, the polyvalent alcohol that is added, with the solid is the general about 0.05%-1.0%S/S of being (weight with hydraulic cement jointing compound in the cement composition is base) of solid percentage amounts (" %S/S ") of base, preferred range is about 0.1%-0.75%S/S, and such concentration generally can provide desirable acceleration to solidifying.The setting accelerator composition can be to add still general big scope about 0.05%-4.0%S/S to urging to coagulate necessary usual amounts.(notice that by using polyhydroxy reactant of the present invention, also can reduce general requirement and reach certain short quantity of coagulating the setting accelerator composition of level, this is to provide blood coagulation enhancing effect preferably because of the combination by polyvalent alcohol and setting accelerator.)
Yet the inventor finds, before joining polyhydroxy reactant and setting accelerator composition in the cement composition, preferably they and quantification on request closed.So only need measure a kind of composition and join in the cement composition.This than the method for the various compositions of independent adding simply and more accurate and reduced the wrong chance of the correct prescription of preparation.If setting accelerator composition and polyhydroxy reactant mixed before joining cement composition, what ratio polyhydroxy reactant and setting accelerator composition can take over effectively in conjunction with to obtain desired result.Generally, the amount of polyvalent alcohol can be about 0.5-40% (weight) (gross weight with polyhydroxy reactant and setting accelerator composition is a base) in the mixture, preferably about 2-30% (weight).
Should with admixture of the present invention with significant quantity be mixed in the hydraulic cement composition, make it to meet the requirements of and solidify.The unit consumption of admixture can be determined easily and will depend on cement composition, each components in proportions and desirable coagulation grade in the composition.Generally, the concentration that joins the polyvalent alcohol that the amount (as above said) of the admixture in the cement composition provided approximately is 0.05%-1.0%S/S, preferably about 0.1-0.75%S/S, general such concentration can produce desirable acceleration to solidifying.
Particularly preferred embodiment of the present invention also comprises the ingredients of a mixture that is selected from alkanolamine and they.The general formula of such alkanolamine is
R wherein
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl.Hydroxyalkyl is C preferably
1-C
4Hydroxyalkyl, methylol for example, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl, more preferably C
1-C
3Hydroxyalkyl.R
3C preferably
1-C
5Alkyl is methyl for example, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group, or isopentyl, more preferably C
1-C
3Alkyl.Particularly preferred alkanolamine is C
1-C
5Alkyl diethanolamine (that is R,
3Be C
1-C
5Alkyl such as methyl) such as being methyldiethanolamine, or ethyldiethanolamine.
Add such admixture composition, find that surprisingly the compressive strength rate that the hardening of cement body that is provided has does not comprise the hardening of cement height of embodiment of the present invention.In addition, be a) basic metal or alkaline earth metal nitrite main the composition in particularly preferred embodiment of the present invention; B) C
2-C
6Polyhydroxy reactant (as defined herein), its amount can increase the short performance of coagulating of setting accelerator composition effectively; C) C
1-C
5Alkyl diethanolamine and their mixture; D) calcium chloride, bromide, iodide, prussiate, cyanate, trinitride, thiocyanate-, thiosulphate or perchlorate like this, even can obtain higher ultimate compression strength.Because well-known halogenide, false halogenide has corrosion to the reinforcing steel bar that is embedded in the concrete, and meanwhile, finds that but the application particularly preferred embodiment of the present invention can stop the corrosion in the hardening of cement body, and this is very astonishing.Also have, for the hardening of cement body, the present invention shows the ultimate compression strength that can increase all curing age surprisingly.
Generally, the consumption of alkanolamine can be about 0.1-6.0% (weight) (gross weight with all active solid compositions in the admixture is a base) in the admixture of the present invention, preferably approximately be 1.0-5.0% (weight), more preferably about 2.0-4.0% (weight).If join in the cement composition respectively, added to add composition (is with the solid base percent solids) approximately be 0.005%-0.10%S/S (is base with the hydraulic cement jointing compound in the cement composition), and preferred range approximately is 0.01%-0.08%S/S.In the described particularly preferred embodiment of the present invention of this section, admixture ingredient d) consumption can be about 0.5-15.0% (weight) (is base with all active solid gross weights in the admixture), more preferably about 3.0-6.0% (weight).
Admixture of the present invention can any traditional mode be added in the cement composition in the prior art by being similar to.Admixture should mix very equably with cement composition.
Provide following examples and only play illustrative purposes, except as otherwise noted, all umbers and ratio are all by weight.
Embodiment 1
Preparation is made up of nitrocalcite and calcium nitrite, and ratio is 2: 1, the admixture of Yu Shuizhong.The total solids of admixture is 42.6%.
Embodiment 2
Preparation consists of by nitrocalcite, and calcium nitrite and glycerol are formed, and ratio is 2: 1: 1, (weight), the admixture of Yu Shuizhong.The admixture total solids is 45%.
Embodiment 3
Admixture prepared in example 1 and the example 2 is added respectively in the mortar, and mortar is with I-II type portland cement, the sand preparation, water cement ratio is 0.45.Also prepare the blank mortar that does not contain admixture simultaneously.Every part of mortar is by 4500g sand, 900gH
2O and 2000g cement machine in the Hobart stirrer stirs and makes.The embodiment 1 of adding q.s and 2 admixture solution are so that the admixture solids concn is 0.5%S/S, and 2.0%S/S (is base with the hydraulic cement weight in the mixture).Setting time is measured according to ASTMC403, and surveying periodic temperature is 55 °F.
The data of table 1 show with different add-ons and add polyhydroxy reactant of the present invention (glycerol), have improved the accelerating chemicals compounds property under the situation of nitrocalcite and calcium nitrite mixture.
Embodiment 4
Preparation is by nitrocalcite, and calcium nitrite and glycerol proportion of composing are 60: 16: 24 (weight), the admixture of the present invention of Yu Shuizhong.The admixture total solids is 45%.
Embodiment 5
The admixture that will prepare in embodiment 4 joins in the mortar, and mortar is that sand makes with three kinds of different I-II type portland cements (" cement 1,2 and 3 "), and water cement ratio is 0.45, does not also contain the blank mortar of admixture with various cement production.Every part of mortar is by the 4500g sand, and 900g water and 2000g cement evenly make in the Hobart stirrer for mixing.The admixture solution that adds the q.s of embodiment 4 is the admixture (weight with hydraulic cement in the mixture is base) of 2.5%S/S so that solids concn to be provided.Setting time is measured according to ASTMC403.Surveying periodic temperature is 40 °F.
The result of table 2 shows the characteristic of the setting time of three kinds of cement types.The cold property of data declaration accelerated cement admixture of the present invention.
Table 1
The admixture presetting period among the embodiment (hour) the presetting period variation (hour)
(blank) 11.08-
1(at 0．5％ S／S) 8．94 2．14
2(at 0．5％ S／S) 7．97 3．11
1(at 2．O％ S／S) 5．05 6．03
2(at 2．0％ S／S) 3．74 7．34
Table 2 presetting period (hour)
Admixture cement 1 cement 2 cement 3 among the embodiment are average
(blank) 9.50 11.40 10.18 10.36
4 7.57 8.57 8.33 8.16 embodiment 5
Press table 3 preparation, the admixture of Yu Shuizhong according to the most preferred embodiment of the present invention.All data are that the gross weight with all active solid compositions in the admixture is the weight percent of each composition of admixture of base.
Table 3
| Sample 1 | Sample 2 | Sample-3a | Sample-3b | Sample-3c | |
| Ca(NO 2) 2 | 43.9 | 42.0 | 42.0 | 41.8 | 38.3 |
| Ca(NO 3) 2 | 43.7 | 42.0 | 42.0 | 41.8 | 38.3 |
| Glycol ether | 10.0 | 8.0 | 9.5 | 8.0 | 8.0 |
| Methyldiethanolamine | - | 6.0 | 6.0 | 3.0 | 3.0 |
| The naphthalene sulphonate formaldehyde polycondensate | 2.4 | 2.0 | 0.5 | 0.4 | 4.0 |
| CaBr 2 | - | - | - | 5.0 | 12.0 |
Embodiment 6
Under the condition similar, measure the characteristic of admixture SA-1 and SA-2 with cement with five kinds of laboratories to embodiment 3.Mixing temperature is 60 and mortar sclerosis under 40.The data that are shown in table 4 illustrate that clearly the admixture that contains alkanolamine of the present invention has produced good 7-28 days ultimate compression strength.
Table 4
+ Ye Liang admixture/100lbs cement
| Ultimate compression strength (psi) | |||||
| Setting time (hour, minute) | oz/cwt + | 2-3 days | 7 days | 28 days | |
| Contrast | 13.67 | - | 880 | 2270 | 3330 |
| SA-1 | 10.05 | 30.0 | 1020 | 2450 | 3720 |
| SA-2 | 10.15 | 30.0 | 840 | 2610 | 3840 |
Embodiment 7
The alkaline earth metal halides (Calcium Bromide) that contain different amounts, SA-3b and SA-3C, the performance of admixture measure with cement with three kinds of laboratories that resemble embodiment 6.Mixing temperature is 72 and cement sclerosis under 20.As shown in table 5, it is clearly favourable to improving early anti pressured intension (3 days) to add CaBr in addition; Like this, add this admixture in concrete, increased the ultimate compression strength of all preserving periods.
Table 5
| Ultimate compression strength (psi) | ||||
| Setting time (hour, minute) | oz/cwt | 3 days | 28 days | |
| Contrast | Do not solidify (freezing) | |||
| SA-3a SA-3b SA-3c | 5.49 4.06 4.78 | 75 75 75 | 262 588 701 | 4041 5060 4494 |
The description of front of the present invention is for the present invention being described rather than in order to limit the present invention.The inventor points out various modifications within the scope of the appended claims or changes all without prejudice to spirit of the present invention.
Claims (17)
1. cement composition, this cement composition contains the hydraulic cement jointing compound, can shorten the admixture of cement composition setting time, and described admixture comprises:
A) be selected from the setting accelerator composition of following composition: alkali metal or alkaline earth metal nitrate, nitrite, and formate; The halogen of basic metal or alkaline-earth metal and muriate, bromide, iodide, prussiate, cyanate, trinitride or thiocyanate; The thiosulphate of basic metal or alkaline-earth metal or perchlorate, basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide, with their mixture, its content is that the solids component percent by weight of benchmark is 0.05% to 4.0% with the hydraulic cement jointing compound in cement composition;
B) contain the aliphatic diol of 2-6 carbon atom and the C of trivalent alcohol
2-C
6Polyvalent alcohol, its content are that the solids component percent by weight of benchmark is 0.05% to 1.0% with the hydraulic cement jointing compound in cement composition;
C) be selected from the mixture of alkanolamine and they, its content is that the solids component percent by weight of benchmark is 0.005% to 0.10% with the hydraulic cement jointing compound in cement composition, and the general formula that said alkanolamine has is:
Wherein, R
1And R
2Each contains the hydroxyalkyl of 1 to 4 carbon atom, R naturally
3Be hydrogen, contain the hydroxyalkyl of 1 to 4 carbon atom, or contain the alkyl of 1 to 5 carbon atom.
2. the cement composition of claim 1, the wherein said C in said admixture
2-C
6The content of polyhydroxy reactant is that the solids component percent by weight of benchmark is 0.1-0.75% with the hydraulic cement jointing compound in cement composition.
3. the cement composition of claim 1, basic metal or alkaline earth salt that wherein said setting accelerator composition is organic or inorganic acid, or their mixture
4. the cement composition of claim 1, wherein said setting accelerator composition is selected from nitrocalcite, calcium nitrite and their mixture.
5. the cement composition of claim 4, wherein R
3Be methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group or isopentyl.
6. the cement composition of claim 4, wherein R
3Be methyl, ethyl, propyl group or sec.-propyl.
7. the cement composition of claim 5, wherein R
1And R
2Be respectively methylol, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl.
8. the cement composition of claim 1, wherein said C
2-C
6Polyhydroxy reactant be selected from ethylene glycol, glycol ether, propylene glycol, and glycerol.
9. preparation contains the method for the cement composition of hydraulic cement jointing compound, and said method comprises in said cement composition and adding respectively:
A) be selected from the setting accelerator composition of following composition: alkali metal or alkaline earth metal nitrate, nitrite, and formate; The halogen of basic metal or alkaline-earth metal and muriate, bromide, iodide.Prussiate, cyanate, trinitride or thiocyanate; The thiosulphate of basic metal or alkaline-earth metal and perchlorate; Basic metal or alkali earth metal aluminate, silicate and oxyhydroxide; With their mixture, its add-on is that the solids component percent by weight of benchmark is 0.05% to 4.0% with the hydraulic cement jointing compound in cement composition;
B) contain the aliphatic diol of 2-6 carbon atom and the C of trivalent alcohol
2-C
6Polyvalent alcohol, its add-on are that the solids component percent by weight of benchmark is 0.05% to 1.0% with the hydraulic cement jointing compound in cement composition;
C) be selected from the ingredients of a mixture of alkanolamine and they, its add-on is that the solids component percent by weight of benchmark is 0.005% to 0.10% with the hydraulic cement jointing compound in cement composition, and the general formula of said alkanolamine is:
Wherein, R
1And R
2Each contains the hydroxyalkyl of 1 to 4 carbon atom, R naturally
3Be hydrogen, contain the hydroxyalkyl of 1 to 4 carbon atom, or contain the alkyl of 1 to 5 carbon atom.
10. the method for claim 9, wherein the consumption of said polyvalent alcohol is that the solid composition percent by weight of benchmark is 0.1-0.75% with the hydraulic cement jointing compound in cement composition in the admixture that is added.
11. the method for claim 9, the setting accelerator composition that is wherein added are the basic metal or the alkaline earth salts of organic acid or mineral acid, or their mixture.
12. the method for claim 9, the setting accelerator composition that is wherein added is selected from nitrocalcite, calcium nitrite and their mixtures.
13. the method for claim 12, wherein R in the admixture that is added
3Be methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group or isopentyl.
14. the method for claim 12, wherein R in the admixture that is added
3Be methyl, ethyl, propyl group, or sec.-propyl.
15. the method for claim 14, wherein R in the admixture that is added
1And R
2Be methylol, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl.
16. the method for claim 9, the wherein said composition c in the admixture that is added) consumption be that the solid composition percent by weight of benchmark is 0.01% to 0.08% with the hydraulic cement jointing compound in cement composition.
17. the method for claim 9, wherein C in the admixture that is added
2-C
6Polyhydroxy reactant be selected from ethylene glycol, glycol ether, propylene glycol, and glycerol.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US125905 | 1993-09-24 | ||
| US08/125,905 US5348583A (en) | 1992-01-28 | 1993-09-24 | Hydraulic cement set-accelerating admixtures incorporating glycols |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106335A Division CN1094477C (en) | 1993-09-24 | 1998-04-03 | Set-accelerating admixture for hydraulic cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1107127A CN1107127A (en) | 1995-08-23 |
| CN1041708C true CN1041708C (en) | 1999-01-20 |
Family
ID=22422001
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113758A Expired - Fee Related CN1041708C (en) | 1993-09-24 | 1994-09-23 | Hydraulic cement set-accelerating admixtures incorporating glycols |
| CN98106335A Expired - Fee Related CN1094477C (en) | 1993-09-24 | 1998-04-03 | Set-accelerating admixture for hydraulic cement composition |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106335A Expired - Fee Related CN1094477C (en) | 1993-09-24 | 1998-04-03 | Set-accelerating admixture for hydraulic cement composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN1041708C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7666334B2 (en) | 2001-10-31 | 2010-02-23 | Specialty Minerals (Michigan) Inc. | Method, composition and apparatus for controlled concrete |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113688C (en) * | 1998-07-31 | 2003-07-09 | 朱孟雄 | Efficient mortar foaming agent and its production process |
| GB0304158D0 (en) * | 2003-02-25 | 2003-03-26 | Mbt Holding Ag | Admixture |
| EP1727775B8 (en) * | 2004-03-19 | 2008-05-07 | James Hardie International Finance B.V. | Multiple mode accelerating agent for cementitious materials |
| JP5122390B2 (en) * | 2007-08-10 | 2013-01-16 | 花王株式会社 | Method for producing hydraulic powder |
| WO2012133870A1 (en) * | 2011-03-28 | 2012-10-04 | Kao Corporation | Method for producing cured article from hydraulic composition |
| CN102229477B (en) * | 2011-04-29 | 2013-04-03 | 中国建筑材料科学研究总院 | Alkali-free and chlorine-free liquid concrete accelerating agent as well as preparation method and application thereof |
| EP2527308A1 (en) * | 2011-05-26 | 2012-11-28 | Sika Technology AG | Hardening accelerator for mineral binder |
| EP2527307A1 (en) * | 2011-05-26 | 2012-11-28 | Sika Technology AG | Dialkanolamines as additives for the grinding of solids |
| EP2527310A1 (en) | 2011-05-26 | 2012-11-28 | Sika Technology AG | Hardening accelerator for mineral binder compositions |
| CN107987813B (en) * | 2016-10-27 | 2020-08-11 | 中国石油化工股份有限公司 | Polymer supported coagulant, preparation method thereof and cement paste |
| CN106746838A (en) * | 2016-11-28 | 2017-05-31 | 欧阳会幼 | A kind of aluminate modified high-efficient liquid accelerator |
| CN109437638A (en) * | 2018-12-28 | 2019-03-08 | 巩义市豫源建筑工程材料有限责任公司 | Low-alkali liquid quick-setting agent |
| CN109384412B (en) * | 2019-01-03 | 2021-07-23 | 安徽瑞和新材料有限公司 | Ordinary silicate concrete coagulant |
| CN110255991A (en) * | 2019-06-19 | 2019-09-20 | 海南圣岛科技有限公司 | Building walls construction concrete and preparation method thereof |
| CN115215575B (en) * | 2021-09-02 | 2023-10-31 | 宁夏永能新材料有限公司 | Cement coagulant and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63319235A (en) * | 1987-06-19 | 1988-12-27 | Masanori Araki | Admixture for mortar or concrete |
| US4888059A (en) * | 1986-12-25 | 1989-12-19 | Dainippon Ink And Chemicals, Inc. | Cement dispersing agent |
| US4909849A (en) * | 1987-04-23 | 1990-03-20 | Funderburk Raymond E | Method and mixture for solidifying and immobilizing various hazardous waste contaminants in an organic matrix |
-
1994
- 1994-09-23 CN CN94113758A patent/CN1041708C/en not_active Expired - Fee Related
-
1998
- 1998-04-03 CN CN98106335A patent/CN1094477C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888059A (en) * | 1986-12-25 | 1989-12-19 | Dainippon Ink And Chemicals, Inc. | Cement dispersing agent |
| US4909849A (en) * | 1987-04-23 | 1990-03-20 | Funderburk Raymond E | Method and mixture for solidifying and immobilizing various hazardous waste contaminants in an organic matrix |
| JPS63319235A (en) * | 1987-06-19 | 1988-12-27 | Masanori Araki | Admixture for mortar or concrete |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7666334B2 (en) | 2001-10-31 | 2010-02-23 | Specialty Minerals (Michigan) Inc. | Method, composition and apparatus for controlled concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094477C (en) | 2002-11-20 |
| CN1107127A (en) | 1995-08-23 |
| CN1216293A (en) | 1999-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1041708C (en) | Hydraulic cement set-accelerating admixtures incorporating glycols | |
| US5340385A (en) | Hydraulic cement set-accelerating admixtures incorporating glycols | |
| US7648575B2 (en) | Providing freezing and thawing resistance to cementitious compositions | |
| CA1187908A (en) | Additive for hydraulic cement mixes | |
| US4337094A (en) | Additive composition for Portland cement materials | |
| US5348583A (en) | Hydraulic cement set-accelerating admixtures incorporating glycols | |
| US5618344A (en) | Cement composition | |
| US20230192552A1 (en) | Method for accelerating and fluidifying wet concretes or mortars compositions comprising an activating agent, a water reducing polymer, consisting in using performance additive including chaotropic ions and its use in low carbon alternative binder compositions | |
| CN1121994C (en) | High early strength cement and additives and methods for making the same | |
| JP3339619B2 (en) | Additives for cement-based materials and cement-based materials | |
| US5604273A (en) | Drying shrinkage cement admixture | |
| US11702365B2 (en) | Corrosion mitigating cement compositions | |
| US4089696A (en) | Hydraulic cement mixes and process for improving hydraulic cement mixes | |
| JP3461635B2 (en) | Injection method | |
| JP2003212632A (en) | Cement-based grout composition | |
| JPS5826061A (en) | Operationability decrease prevention for cement admixture | |
| JP2567322B2 (en) | Highly Fillable Fresh Concrete for Cast-in-Place | |
| EP0813507B1 (en) | Cement composition | |
| JPH1149538A (en) | Blast furnace water granulated slag mixture and hydraulic composition | |
| JPS5841746A (en) | Self leveling floor composition | |
| JP7383553B2 (en) | Cement-based filler | |
| JPH0535100B2 (en) | ||
| JP2003306364A (en) | Powdered shrinkage reducing agent for cements | |
| JPH0948654A (en) | Material for filling cavity | |
| JPH0680965A (en) | Method for stabilizing ground |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19990120 Termination date: 20120923 |