CN109704616A - High belite special-purpose retarder for sulpho-aluminate cement - Google Patents
High belite special-purpose retarder for sulpho-aluminate cement Download PDFInfo
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- CN109704616A CN109704616A CN201910129957.9A CN201910129957A CN109704616A CN 109704616 A CN109704616 A CN 109704616A CN 201910129957 A CN201910129957 A CN 201910129957A CN 109704616 A CN109704616 A CN 109704616A
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Abstract
It the invention discloses a kind of high belite special-purpose retarder for sulpho-aluminate cement, is composed of following substance: pectination polycarboxylate polymer (weight average molecular weight 30000~50000), citric acid, beta-cyclodextrin, aminotrimethylenephosphonic acid and borax.In the present invention all slow setting components in cement volume in 0.05%~1.00% range, when polycarboxylate water-reducer is 0.15%, citric acid is 1.00%, beta-cyclodextrin is 1.00%, aminotrimethylenephosphonic acid is 0.25%, when borax is 0.20%, this special retarder is most significant to the retarding effect of high belite sulphate aluminium cement.This special retarder suitable for high belite sulphate aluminium cement can not only extend this kind of cement setting time, moreover it is possible to improve high belite sulphate aluminium cement slurry fluidity and middle and later periods cement mortar strength.Non-toxic and tasteless, environmental friendly product of the invention, and it is readily transported storage, it has a good application prospect.
Description
Technical field
The invention belongs to New Building Materials fields, more specifically belong to special engineered material scope, are related to being suitable for
High belite special-purpose retarder for sulpho-aluminate cement.
Background technique
Sulphate aluminium cement is produced because having the good characteristics such as early strong, high-strength, freeze proof, impervious, anti-corrosion and low alkalinity
Only need lower energy consumption and lower CO2Discharge amount, therefore now gradually by the attention of researchers.
But there is also some problems, such as the production needs of sulphate aluminium cement are a large amount of good for sulphate aluminium cement production
Bauxite resource, production cost is higher, while there is also long-term strengths to increase the defects of not significant for sulphate aluminium cement.In order to change
Kind disadvantages mentioned above, current research have developed a kind of with low shrink(LS) high belite sulphate aluminium cement.This cement
The a large amount of industrial residue of Commercial cultivation has the advantages that low cost, low energy consumption and low emission.Meanwhile this high belite sulphur
Aluminate cement condenses faster than sulphate aluminium cement, higher with long-term strength in early days, greatly compensates for sulphate aluminium cement
The shortcomings that.But this kind of cement is too fast there is setting time, with the disadvantages of compatibility of additive is bad, constructional difficulties, this pole
The earth hinders the extensive use of this kind of cement.
For the hydration and hardening time for extending cement, the concrete newly mixed is made to be maintained for a long time preferable plasticity, mostly mixed
Retarder is added in solidifying soil, to achieve the purpose that adjust solidifying.At this stage, the retarder research of ordinary portland cement has been compared
It is more deep, the slow settings components such as sucrose, sodium gluconate, zinc salt, tartrate, fluosilicate are utilized in disclosed patent mostly
Slow setting is carried out to ordinary portland cement, and retarding effect is good.And the retarder research of sulphate aluminium cement is now also
It is more deep.For example the reed of University Of Ji'nan enables patent disclosed in superfine people (CN201710057774) different by chloromethylAzoles
The substances such as quinoline ketone, film forming agent, water-reducing agent and polyethylene glycol can achieve the purpose of slow setting sulphate aluminium cement；Beijing municipal administration road and bridge
Wu Changsen et al. (CN201110186562) by boric acid being added in sulphate aluminium cement and water-reducing agent is slow to reach
Solidifying purpose；The ox heir of Capital Iron & Steel General Co uh et al. disclosed in the middle boric acid of patent (CN95101008), sodium nitrite, calcium lignosulfonate etc.
Special retarder of the slow setting component as sulphate aluminium cement；Fine coal is used in the patent (CN200510042509) of Liu Mao equality people
The slow settings such as ash, boric acid, molasses component carries out slow setting to sulphate aluminium cement, and effect is preferable.But high belite sulphate aluminium cement
It is widely different with ordinary portland cement main mineral constituent.Common retarder not necessarily has retarding effect to this kind of cement.It grinds
It is unobvious to high belite sulphate aluminium cement retarding effect to study carefully discovery the above retarder, hence it is evident that be not able to satisfy it in work
The requirement constructed in journey.
For the construction operation time deficiency for solving high belite sulphate aluminium cement, expand its application range, is badly in need of developing
It is suitable for the special retarder of high belite sulphate aluminium cement out.
Summary of the invention
The present invention is applicable in the status of retarder for shortage high belite sulphate aluminium cement, and developing effectively to extend
High belite sulphate aluminium cement setting time improves the fluidity of high belite sulphate aluminium cement slurry, reduces high Baily
To the retarder of the demand of water when special sulphate aluminium cement mix, to meet the operation technological requirement of general execution conditions.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
One kind being suitable for high belite sulphur aluminic acid cement special retarder, and each slow setting component accounts for high belite after addition retarder
Sulphate aluminium cement gross mass percentage are as follows: pectination polycarboxylate polymer 0.1%-0.2%, cyclodextrin 0.05%-1.00%,
Citric acid 0.05%-1.00%, aminotrimethylenephosphonic acid 0.05%-0.25%, borax 0.05%-0.20%.
Preferably, a kind of retarder suitable for high belite sulphate aluminium cement, each slow setting component account for addition slow setting
Agent high belite sulphate aluminium cement gross mass percentage are as follows: pectination polycarboxylate polymer 0.15%-0.2%, cyclodextrin
0.50%-1.00%, citric acid 0.50%-1.00%, aminotrimethylenephosphonic acid 0.20%-0.25%, borax 0.10%-
0.20%.
It is furthermore preferred that a kind of retarder suitable for high belite sulphate aluminium cement, it is slow that each slow setting component accounts for addition
Solidifying agent high belite sulphate aluminium cement gross mass percentage are as follows: pectination polycarboxylate polymer 0.15%, cyclodextrin 1.00%,
Citric acid 1.00%, aminotrimethylenephosphonic acid 0.25%, borax 0.20%.
Described, cyclodextrin is white powder, and Tianjin recovery fine chemistry industry research institute sells.Contain in cyclodextrin molecular structure
A large amount of hydrophilic radical hydroxyls, due to suction-operated, hydroxyl on cement particle surface, can by hydrogen bond and associated water molecules,
Cement particle surface is set to form a large amount of solvation moisture films, which prevent cement granules to contact with the direct of water, plays slow setting effect
Fruit
Described, citric acid is white crystalline powder, and good fortune morning chemical reagent factory in Tianjin is sold.Citric acid plays deferred action
The H of generation is ionized under hydrolysising balance2Cit-、HCit2-And Cit3-This 3 kinds of acid ions, they and calcium form different stability
Complex compound sediment, be adsorbed on gypsum particle surface, prevent the further of a large amount of gypsum in high belite sulphate aluminium cement
Dissolution and aquation, have delayed the formation speed of high belite sulphate aluminium cement hydrated product entringite, generate this kind of cement
Retarding effect.
Described, aminotrimethylenephosphonic acid is liquid, and Shanghai Mike's woods biochemical technology Co., Ltd sells.Amino trimethylene first
Base phosphonic acids is as common trade effluent antisludging agent, to Ca2+With strong chelation, in high belite sulphate aluminium cement
Containing largely free calcium sulfate, after this kind of cement is contacted with water, aminotrimethylenephosphonic acid can be chelated in cement rapidly
Ca2+, form Ca3.5(C3H7O10NP3) chelate.The chelate of this microsolubility can be wrapped in cement particle surface, prevent water
Muddy water, and then delay the setting time of cement.
Described, borax is white powder, and Beijing Chemical Plant is sold.Borax is fast after high belite sulphate aluminium cement is added
Speed forms line borate, forms wrapping layer on clinker surface, it is suppressed that hydrated cementitious, and then extend the setting time of cement.
Described, a kind of pectination polycarboxylate polymer is the polycarboxylic acids diminishing that weight average molecular weight is 30000~50000
Agent, liquid, solid content 40%, CNBM Zhongyan Technology Co., Ltd. sells.
Described, each slow setting component of special retarder need to be uniformly mixed in advance, be configured to special retarder, be then added to
In high belite sulphate aluminium cement.It comes into full contact with each slow setting component with cement granules, plays in each comfortable cement
Different deferred actions makes special retarder reach slow setting optimal effectiveness.
Described, the volume of each slow setting component is the percentage that each slow setting component accounts for cement gross mass.
Beneficial effects of the present invention:
1, special retarder of the invention can effectively delay the setting time of high belite sulphate aluminium cement, make it
Presetting period can delay by 2 hours or more.
2, high belite special-purpose retarder for sulpho-aluminate cement of the invention can effectively improve high belite aluminium sulfate
The paste flowing degree of cement.
3, demand when high belite sulphate aluminium cement mix can be significantly reduced in special retarder of the invention to water.
4, special retarder of the invention has no adverse effect to the long-term cement mortar strength of high belite sulphate aluminium cement.
Specific embodiment
Below in conjunction with specific example, the present invention is described in detail.
Embodiment 1
A kind of special retarder suitable for high belite sulphate aluminium cement, each slow setting component account for the hundred of cement gross mass
Divide ratio for polycarboxylate water-reducer 0.10%, beta-cyclodextrin 0.05%, citric acid 0.05%, aminotrimethylenephosphonic acid 0.10%,
Borax 0.10%.Testing the ratio of mud is 0.28.
Described, polycarboxylate water-reducer is a kind of pectination polycarboxylate polymer, and weight average molecular weight is 30000~50000,
Liquid, solid content 40%.
Described, beta-cyclodextrin, citric acid, aminotrimethylenephosphonic acid and borax are analytical reagents.
Described, each slow setting component of high belite special-purpose retarder for sulpho-aluminate cement need to be uniformly mixed, and be then added to
It is used in cement.
Embodiment 2
A kind of special retarder suitable for high belite sulphate aluminium cement, each slow setting component account for the hundred of cement gross mass
Divide ratio for polycarboxylate water-reducer 0.20%, beta-cyclodextrin 0.50%, citric acid 0.50%, aminotrimethylenephosphonic acid 0.20%,
Borax 0.15%.Testing the ratio of mud is 0.28.
Remaining is the same as embodiment 1
Embodiment 3
A kind of special retarder suitable for high belite sulphate aluminium cement, each slow setting component account for the hundred of cement gross mass
Divide ratio for polycarboxylate water-reducer 0.15%, beta-cyclodextrin 1.00%, citric acid 1.00%, aminotrimethylenephosphonic acid 0.25%,
Borax 0.20%.Testing the ratio of mud is 0.28.
Remaining is the same as embodiment 1
Comparative example 1
A kind of retarder suitable for sulphate aluminium cement, the percentage that each slow setting component accounts for cement gross mass is polymer
Lotion 7%, chlormethylisothiazo,ine ketone 1.00%, film forming agent 0.20%, water-reducing agent 0.10%, polyethylene glycol 1.5%.Test water
Gray scale is 0.28.
Described, polymer emulsion is organosilicon-modified acrylic emulsion, and solid content is 47%~49%.
Described, film forming agent is nonionic polyurethane lotion, solid content 54%.
Described, water-reducing agent is powder sodium lignin sulfonate, and lignin sulfonic acid sodium content > 45% tails over≤4%.
Described, polyethylene glycol is Liquid Macrogol.
Comparative example 2
A kind of retarder suitable for sulphate aluminium cement, the percentage that each slow setting component accounts for cement gross mass is boric acid
0.45%, the common highly concentrated water-reducing agent 0.15% of naphthalene system, the experiment ratio of mud is 0.28.
Comparative example 3
One kind being suitable for high-early-strength sulphate aluminium cement retarder, and each slow setting component accounts for the percentage of cement gross mass
For boric acid 0.50%, sodium nitrite 7.00%, calcium lignosulfonate 1.00%.Testing the ratio of mud is 0.28.
Performance test
Respectively using the high belite sulphate aluminium cement for adding retarder made from embodiment 1-3 as experimental group 1-3, distinguish
To add the high belite sulphate aluminium cement of retarder made from comparative example 1-3 as control group 1-3, not add any slow setting
The high belite sulphate aluminium cement of agent is control group 4, referring to GB/T 1346-2011 " cement normal consistency water consumption, condensation
Time, the stability method of inspection ", the setting time of measurement experiment group 1-3 and control group 1-4 under the conditions of 0.28 ratio of mud；Reference
CB/T 8077-2012 " Methods for testing uniformity of concrete admixture ", measurement experiment group 1-3 and right under the conditions of 0.28 ratio of mud
According to the paste flowing degree of group 1-4；The water of 1:3 is used referring to GB/T 17671-1999 " Test method for strength of hydraulic cement mortar (ISO) "
Mud cement mortar rate and 0.47 the ratio of mud under the conditions of measurement experiment group 1-3 and control group 1-4 strength of cement mortar.
1 the performance test results of table
Although the embodiments of the present invention have been disclosed as above, but its listed fortune not only in the description and the implementation
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real
Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to
Specific details and example shown and described herein.
Claims (4)
1. a kind of high belite special-purpose retarder for sulpho-aluminate cement, characterized by comprising: pectination polycarboxylate polymer, β-
Cyclodextrin, citric acid, aminotrimethylenephosphonic acid and borax are composed；When it is added in cement, after retarder is added
It is as follows that component is calculated by mass percentage in total material: pectination polycarboxylate polymer 0.10%-0.2%, beta-cyclodextrin
0.05%-1.00%, citric acid 0.05%-1.00%, aminotrimethylenephosphonic acid 0.05%-0.25%, borax 0.05%-
0.20%, remaining is cement.
2. retarder according to claim 1, it is characterised in that: pectination polycarboxylate polymer weight average molecular weight is
30000~50000.
3. retarder according to claim 1, it is characterised in that: pectination polycarboxylate polymer, liquid, solid content are
40%.
4. retarder according to claim 1, it is characterised in that: all set retarder components need to be sufficiently mixed uniformly, be prepared
At high belite special-purpose retarder for sulpho-aluminate cement, for use.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183134A (en) * | 2019-05-17 | 2019-08-30 | 江苏万邦新材料科技有限公司 | A kind of new structure cement retarder and its application |
| CN110590218A (en) * | 2019-09-02 | 2019-12-20 | 普定县银丰农业科技发展有限公司 | Concrete retarder and preparation method thereof |
| CN112811849A (en) * | 2021-01-14 | 2021-05-18 | 西南科技大学 | Retarder for cement-based materials |
| CN112961658A (en) * | 2021-03-09 | 2021-06-15 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN112979203A (en) * | 2021-03-04 | 2021-06-18 | 交通运输部公路科学研究所 | Cement concrete hydration heat inhibitor containing water-soluble cage-type inclusion compound and preparation method and application thereof |
| CN112980409A (en) * | 2021-03-09 | 2021-06-18 | 嘉华特种水泥股份有限公司 | Retarder suitable for large-temperature-difference well cementation and preparation method thereof |
| CN113185175A (en) * | 2021-05-12 | 2021-07-30 | 北京金隅水泥节能科技有限公司 | Early strength cement grinding aid and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183134A (en) * | 2019-05-17 | 2019-08-30 | 江苏万邦新材料科技有限公司 | A kind of new structure cement retarder and its application |
| CN110590218A (en) * | 2019-09-02 | 2019-12-20 | 普定县银丰农业科技发展有限公司 | Concrete retarder and preparation method thereof |
| CN112811849A (en) * | 2021-01-14 | 2021-05-18 | 西南科技大学 | Retarder for cement-based materials |
| CN112811849B (en) * | 2021-01-14 | 2022-04-22 | 西南科技大学 | Retarder for cement-based materials |
| CN112979203A (en) * | 2021-03-04 | 2021-06-18 | 交通运输部公路科学研究所 | Cement concrete hydration heat inhibitor containing water-soluble cage-type inclusion compound and preparation method and application thereof |
| CN112961658A (en) * | 2021-03-09 | 2021-06-15 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN112980409A (en) * | 2021-03-09 | 2021-06-18 | 嘉华特种水泥股份有限公司 | Retarder suitable for large-temperature-difference well cementation and preparation method thereof |
| CN112961658B (en) * | 2021-03-09 | 2022-08-05 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN113185175A (en) * | 2021-05-12 | 2021-07-30 | 北京金隅水泥节能科技有限公司 | Early strength cement grinding aid and preparation method thereof |
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