CN1107127A - Hydraulic cement set-accelerating admixtures incorporating glycols - Google Patents
Hydraulic cement set-accelerating admixtures incorporating glycols Download PDFInfo
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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 08/046,110 that proposed on April 9th, 1993, the part subsequent application, and 08/046,110 be again the now resigned U. S. application 07/827,196 that proposes on January 28th, 1992, 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 adopt interpolation 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 of 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 setting accelerator performance 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, the general about 0.05%-1.0% of the being S/S(of solid percentage amounts (" %S/S) that with the solid is base is a base with the weight of hydraulic cement jointing compound in the cement composition); 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 in the mixture) (gross weight with polyhydroxy reactant and setting accelerator composition is a base), 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, and 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 in the admixture of the present invention) (gross weight with all active solid compositions in the admixture is a base), preferably approximately be 1.0-5.0%(weight), more preferably about 2.0-4.0%(weight).If join in the cement composition respectively, it is added that to add composition (is with the solid base percent solids) approximately be that 0.005%-0.10% S/S(is a base with the hydraulic cement jointing compound in the cement composition), 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 that 0.5% S/S and 2.0% S/S(are 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), and 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 cement (" 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?2.0%?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 |
| Naphthalenesulfonate methylamine 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
| 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 |
+ liquid measure two admixtures/100lbs cement
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 (29)
1, a kind of shortening includes the hydraulic cement jointing compound, 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 basic metal of seven races' halogen and pseudohalogen acid or alkaline earth salt; The thiosulphate of basic metal or alkaline-earth metal or perchlorate, basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide and their mixture;
B) be defined as the aliphatic diol of 2-6 carbon and the C of trivalent alcohol
2-C
6Polyhydroxy reactant, its amount increase the short performance of coagulating of setting accelerator composition effectively.
C) be selected from alkanolamine and their the ingredients of a mixture, the general formula that said alkanolamine has is
Wherein, R
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl.
2, the admixture of claim 1, wherein the consumption of the said polyvalent alcohol in said admixture is approximately 0.05-40%(weight), it is a base with the gross weight of polyhydroxy reactant in the said admixture and setting accelerator composition.
3, the admixture of claim 1, wherein the consumption of the said polyhydroxy reactant in said admixture is approximately 2.0-30%(weight), it is a base with the gross weight of polyhydroxy reactant in the said admixture and setting accelerator composition.
4, the admixture of claim 1, basic metal or alkaline earth salt that wherein said setting accelerator composition is organic acid or mineral acid, or their mixture.
5, the admixture of claim 1, wherein said setting accelerator composition is selected from nitrocalcite, calcium nitrite and their mixture.
6, the admixture of claim 5, wherein R
3Be methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group or isopentyl.
7, the admixture of claim 5, wherein R
3Be methyl, ethyl, propyl group, or sec.-propyl.
8, the admixture of claim 7, wherein R
1And R
2Be methylol, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl.
9, the admixture of claim 3, the wherein said composition c in said admixture) the about 0.1-6.0%(weight of consumption), it is a base with the gross weight of all active solid compositions in the said admixture.
10, the admixture of claim 3, the wherein said composition c in said admixture) amount approximately be 1.0-5.0%(weight), it is a base with the gross weight of all active solid compositions in the said admixture.
11, the admixture of claim 3, the wherein said composition c in said admixture) approximately be 2.0-4.0%(weight), it is a base with the gross weight of all the active solid compositions in the said admixture.
12, the admixture of claim 1, wherein said C
2-C
6Polyhydroxy reactant be selected from ethylene glycol, glycol ether, propylene glycol, and glycerol.
13, be used to shorten the admixture of the cement composition setting time that comprises the hydraulic cement jointing compound, said admixture is mainly formed and is
A) be selected from alkali metal or alkaline earth metal nitrate, the setting accelerator composition of nitrite and formate;
B) be defined as the aliphatic diol of 2-6 carbon and the C of trivalent alcohol
2-C
6Polyhydroxy reactant, the short performance of coagulating that increases the setting accelerator composition effectively of existence;
C) be selected from the ingredients of a mixture of alkanolamine and they, said alkanolamine general formula is,
R wherein
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl; With
D) basic metal and the alkaline earth salt of seven races' halogen and pseudohalogen acid; Basic metal or alkaline-earth metal thiosulphate and perchlorate; Basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide; With their mixture.
14, the admixture of claim 13, wherein R
3Be methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group and isopentyl.
15, the admixture of claim 13, wherein R
3Be methyl, ethyl, propyl group, or sec.-propyl.
16, the admixture of claim 13, wherein R
1And R
2Be methylol, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl.
17, the admixture of claim 13, the wherein said composition c in said admixture) amount approximately be 0.1-6.0%(weight), it is a base with the gross weight of all the active solid compositions in said admixture.
18, the admixture of claim 13, the wherein said ingredient d in said admixture) amount approximately be 1.0-5.0%(weight), it is a base with the gross weight of all the active solid compositions in said admixture.
19, a kind of cement composition, it include the hydraulic cement jointing compound and
A) be selected from the setting accelerator composition of following composition; Alkali metal or alkaline earth metal nitrate, nitrite, and formate; The basic metal of seven races' halogen and pseudohalogen acid or alkaline earth salt; Basic metal or alkaline-earth metal thiosulphate and perchlorate; Basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide; With their mixture;
B) be defined as the aliphatic diol of 2-6 carbon and the C of trivalent alcohol
2-C
6Polyhydroxy reactant, the amount of existence increase the short performance of coagulating of setting accelerator composition effectively;
C) be selected from alkanolamine and their the ingredients of a mixture, said alkanolamine general formula is:
R wherein
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl.
20, the cement composition of claim 19, the wherein said C in said admixture
2-C
6The amount of polyhydroxy reactant approximately is a 0.05-40%(weight), it is a base with the gross weight of polyhydroxy reactant in said admixture and setting accelerator composition.
21, the cement composition of claim 19, the wherein said C in said admixture
2-C
6The amount of polyhydroxy reactant approximately is a 2.0-30%(weight), it is a base with the gross weight of polyhydroxy reactant in said admixture and setting accelerator composition.
22, the cement composition of claim 19, basic metal or alkaline earth salt that wherein said setting accelerator composition is organic or inorganic acid, or their mixture.
23, the cement composition of claim 19, wherein said setting accelerator composition is selected from nitrocalcite, calcium nitrite and their mixture.
24, the cement composition of claim 23, wherein R
3Be methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, amyl group or isopentyl.
25, the cement composition of claim 23, wherein R
3Be methyl, ethyl, propyl group, or sec.-propyl.
26, the cement composition of claim 24, wherein R
1And R
2Be methylol, hydroxyethyl, hydroxypropyl, hydroxyl sec.-propyl, or hydroxyl butyl.
27, the cement composition of claim 19, wherein said C
2-C
6Polyhydroxy reactant be selected from ethylene glycol, glycol ether, propylene glycol, and glycerol.
28, preparation contains the method for the cement composition of hydraulic cement jointing compound, and said method comprises in said cement composition and adding
A) be selected from the setting accelerator composition of following composition: alkali metal or alkaline earth metal nitrate, nitrite, and formate; The basic metal of seven races' halogen and pseudohalogen acid or alkaline earth salt; The thiosulphate of basic metal or alkaline-earth metal and perchlorate; Basic metal or alkali earth metal aluminate, silicate and oxyhydroxide; With their mixture.
B) be defined as the aliphatic diol of 2-6 carbon and the C of trivalent alcohol
2-C
6Polyhydroxy reactant, the amount of its existence should increase the short performance of coagulating of setting accelerator composition effectively;
C) be selected from the ingredients of a mixture of alkanolamine and they, said alkanolamine general formula is,
R wherein
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl.
29, be used to shorten the prevention corrosion of the setting time of the cement composition that contains the hydraulic cement binding agent, setting accelerator, said admixture comprise the setting accelerator composition of following composition:
A) be selected from alkali metal or alkaline earth metal nitrate, nitrite, and formate; The basic metal of seven races' halogen and pseudohalogen acid or alkaline earth salt; Basic metal or alkaline-earth metal thiosulphate and perchlorate; Basic metal or alkali earth metal aluminate, silicate, and oxyhydroxide; With their mixture;
B) be defined as the aliphatic diol of 2-6 carbon and the C of trivalent alcohol
2-C
6Polyhydroxy reactant, the amount of its existence increase the short performance of coagulating of setting accelerator composition effectively;
C) be selected from the ingredients of a mixture of alkanolamine and they, said alkanolamine general formula is,
R wherein
1And R
2Be hydroxyalkyl, R
3Be hydrogen, hydroxyalkyl, or alkyl.
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 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106335A Division CN1094477C (en) | 1993-09-24 | 1998-04-03 | Set-accelerating admixture for hydraulic cement composition |
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| Publication Number | Publication Date |
|---|---|
| CN1107127A true CN1107127A (en) | 1995-08-23 |
| CN1041708C CN1041708C (en) | 1999-01-20 |
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ID=22422001
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| 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 |
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| CN98106335A Expired - Fee Related CN1094477C (en) | 1993-09-24 | 1998-04-03 | Set-accelerating admixture for hydraulic cement composition |
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| CN100404469C (en) * | 2003-02-25 | 2008-07-23 | 建筑研究及技术有限责任公司 | Accelerator admixture |
| CN1930103B (en) * | 2004-03-19 | 2010-05-05 | 詹姆斯哈迪国际财金公司 | Multiple mode accelerating agent for cementitious materials and method for accelerating cementitious reaction by using the multiple mode accelerating agent |
| CN102229477A (en) * | 2011-04-29 | 2011-11-02 | 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 |
| CN101784499B (en) * | 2007-08-10 | 2013-06-19 | 花王株式会社 | Method for producing hydraulic powder |
| CN103492340A (en) * | 2011-05-26 | 2014-01-01 | Sika技术股份公司 | Hardening accelerator for mineral binders |
| CN103502176A (en) * | 2011-05-26 | 2014-01-08 | Sika技术股份公司 | Dialkanolamines as additives for grinding solids |
| US9233876B2 (en) | 2011-05-26 | 2016-01-12 | Sika Technology Ag | Hardening accelerator for mineral binder compositions |
| CN107987813A (en) * | 2016-10-27 | 2018-05-04 | 中国石油化工股份有限公司 | A kind of Polymer-supported type coagulant and preparation method thereof and cement mortar |
| 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 |
| 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 |
| CN115215575A (en) * | 2021-09-02 | 2022-10-21 | 宁夏永能新材料有限公司 | Cement coagulant and preparation method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6926851B2 (en) | 2001-10-31 | 2005-08-09 | Specialty Minerals (Michigan) Inc. | Method, composition and apparatus for controlled concrete |
| EP2691347B1 (en) * | 2011-03-28 | 2016-09-14 | Kao Corporation | Method for producing cured article from hydraulic composition |
| CN106746838A (en) * | 2016-11-28 | 2017-05-31 | 欧阳会幼 | A kind of aluminate modified high-efficient liquid accelerator |
| CN109384412B (en) * | 2019-01-03 | 2021-07-23 | 安徽瑞和新材料有限公司 | Ordinary silicate concrete coagulant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63162563A (en) * | 1986-12-25 | 1988-07-06 | 大日本インキ化学工業株式会社 | Cement dispersant |
| 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 |
-
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
Cited By (16)
| 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 |
| CN100404469C (en) * | 2003-02-25 | 2008-07-23 | 建筑研究及技术有限责任公司 | Accelerator admixture |
| CN1930103B (en) * | 2004-03-19 | 2010-05-05 | 詹姆斯哈迪国际财金公司 | Multiple mode accelerating agent for cementitious materials and method for accelerating cementitious reaction by using the multiple mode accelerating agent |
| CN101784499B (en) * | 2007-08-10 | 2013-06-19 | 花王株式会社 | Method for producing hydraulic powder |
| CN102229477A (en) * | 2011-04-29 | 2011-11-02 | 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 |
| US9221716B2 (en) | 2011-05-26 | 2015-12-29 | Sika Technology Ag | Hardening accelerator for mineral binders |
| CN103502176A (en) * | 2011-05-26 | 2014-01-08 | Sika技术股份公司 | Dialkanolamines as additives for grinding solids |
| US9133057B2 (en) | 2011-05-26 | 2015-09-15 | Sika Technology Ag | Dialkanolamines as additives for grinding solids |
| CN103492340A (en) * | 2011-05-26 | 2014-01-01 | Sika技术股份公司 | Hardening accelerator for mineral binders |
| US9233876B2 (en) | 2011-05-26 | 2016-01-12 | Sika Technology Ag | Hardening accelerator for mineral binder compositions |
| CN103492340B (en) * | 2011-05-26 | 2016-10-19 | Sika技术股份公司 | curing accelerator for mineral binder |
| CN107987813A (en) * | 2016-10-27 | 2018-05-04 | 中国石油化工股份有限公司 | A kind of Polymer-supported type coagulant and preparation method thereof and cement mortar |
| 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 |
| 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 |
| 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 |
| CN115215575A (en) * | 2021-09-02 | 2022-10-21 | 宁夏永能新材料有限公司 | Cement coagulant and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094477C (en) | 2002-11-20 |
| CN1216293A (en) | 1999-05-12 |
| CN1041708C (en) | 1999-01-20 |
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