CN106365491B - Early strength agent and preparation method thereof for concrete - Google Patents
Early strength agent and preparation method thereof for concrete Download PDFInfo
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- CN106365491B CN106365491B CN201610696827.XA CN201610696827A CN106365491B CN 106365491 B CN106365491 B CN 106365491B CN 201610696827 A CN201610696827 A CN 201610696827A CN 106365491 B CN106365491 B CN 106365491B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The early strength agent and preparation method thereof that the invention discloses a kind of for concrete, the early strength agent are made of each component of following weight：25~30 parts of CaO, Al2O320~25 parts, 10~20 parts of MgO, ZrO22~5 parts, CaSO43~6 parts, 10~15 parts of celestite powder, 10~15 parts of bentonite in powder, 5~9 parts of galapectite powder, La2O30.4~0.7 part, Ta2O50.3~0.5 part, Li2CO31~3 part, 0.1~0.3 part of NaCl, 0.1~0.3 part of KCl.The preparation method is calcined at ball milling, 700-800 DEG C, again with the reagents ball milling such as calcium aluminum hydrotalcite, and the early strength agent for concrete can be obtained.The present invention has the advantages that early strong effect is good, intensity is high, calcination temperature is low etc., is a kind of rising concrete admixture.
Description
Technical field
The early strength agent and preparation method thereof that the present invention relates to a kind of for concrete, belongs to technical field of concrete additives.
Background technique
With the rapid development of economy, role of the concrete in building also becomes more and more important, this is virtually right
Concrete proposes increasingly higher demands.In order to improve the performance of concrete and meet concrete construction needs, this field skill
Art personnel are often utilized in addition concrete admixture mode in concrete.Wherein, common concrete admixture, which has, subtracts
Aqua, retarder, early strength agent, waterproofing agent etc..
Early strength agent be it is a kind of can accelerate hydrated cementitious speed, improve early strength of concrete, and to later strength without aobvious
Write the additive influenced.According to chemical component, it is broadly divided into inorganic early strength agent and organic early strength agent.Inorganic salts are early strong
Agent includes villaumite, sulfate, nitrite, silicate etc.；Organic early strength agent includes triethanolamine, calcium formate and urea
Deng.Inorganic salts early strength agent is that the scope of application is most wide and the preferable concrete early strength agent type of early strong effect, but villaumite and sulphur
The disadvantage of the early strength agent such as Barbiturates itself, so that there are limitations for the application of such early strength agent；Organic species early strength agent itself is not
Concrete can be damaged, but organic species early strength agent reacts the more difficult assurance of dosage, and price is higher, thus actually answering
It is seldom used alone in.
In order to promote the development of early strength agent, those skilled in the art carry out deep exploration and research to early strength agent, and take
Obtain Research Achievement centainly, a kind of such as entitled " preparation method of low-density cement mortar early strength agent (Chinese patent application announcement
Number：CN104031624A patent) " discloses a kind of preparation method of low-density cement mortar early strength agent, described in early strength agent
Be by following components by weight：35~55 parts of CaO, Al2O331~58 parts, SiO25~10 parts, Fe2O35~10 parts, and
Through at ball milling, 1250-1400 DEG C calcine, again with Li2CO3Low-density cement mortar early strength agent can be obtained in ball milling.Although it can be obtained
Early strong effect centainly is obtained, but can't be satisfactory in terms of concrete application aspect, especially concrete strength.This
Outside, 1250-1400 DEG C of calcination temperature it is relatively high, this virtually increases preparation cost, constrains morning to a certain extent
The development of strong agent.Therefore, continuing to explore is very important with research early strength agent.
Summary of the invention
For above-mentioned early strength agent in the prior art to the technical problem of concrete strength aspect and calcination temperature deficiency, this hair
It is bright the technical problem to be solved is that propose it is a kind of can effectively improve intensity and reduce calcination temperature for concrete
Early strength agent and preparation method thereof.
A kind of early strength agent for concrete, is made of each component of following weight：CaO25~30 part, Al2O3
20~25 parts, 10~20 parts of MgO, ZrO22~5 parts, CaSO43~6 parts, 10~15 parts of celestite powder, bentonite in powder 10~15
Part, 5~9 parts of galapectite powder, La2O30.4~0.7 part, Ta2O50.3~0.5 part, Li2CO31~3 part, NaCl 0.1~0.3
Part, 0.1~0.3 part of KCl.
Preferably,
A kind of early strength agent for concrete, is made of each component of following weight：28 parts of CaO, Al2O3 22
Part, 15 parts of MgO, ZrO24 parts, CaSO45 parts, 12 parts of celestite powder, 12 parts of bentonite in powder, 7 parts of galapectite powder, La2O3 0.5
Part, Ta2O50.4 part, Li2CO32 parts, 0.2 part of NaCl, 0.2 part of KCl.
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 200~300 turns/min, 6~8h of ball milling；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 700~
1~2h, natural cooling are calcined in 800 DEG C of Muffle furnaces；
3) 60~120 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 3~5 parts of calcium aluminum hydrotalcites, 1~3 part of calcium metaaluminate and 2~4 parts of calcium acrylates are sequentially added, ball milling 20~
30min；
5) 0.1~0.3 part of calcium gluconate and 0.2~0.4 part of polycarboxylate water-reducer, 20~30min of ball milling are sequentially added；
6) 1~3 part of calcium dodecyl benzene sulfonate and 0.3~0.7 part of nanometer calcium carbonate are sequentially added, ball milling 30~
The early strength agent for concrete can be obtained in 40min.
Preferably,
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 250 turns/min, ball milling 7h；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 750 DEG C of horses
1.5h, natural cooling are not calcined in furnace；
3) 100 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 4 parts of calcium aluminum hydrotalcites, 2 parts of calcium metaaluminates and 3 parts of calcium acrylates, ball milling 25min are sequentially added；
5) 0.2 part of calcium gluconate and 0.3 part of polycarboxylate water-reducer, ball milling 25min are sequentially added；
6) 2 parts of calcium dodecyl benzene sulfonates and 0.5 part of nanometer calcium carbonate are sequentially added, use can be obtained in ball milling 35min
In the early strength agent of concrete.
The NaCl：KCl is 1：1.
Compared with prior art, the beneficial effects of the invention are as follows：
Firstly, preparation method is different.The prior art is to be prepared using solid phase method, and the present invention is prepared using molten-salt growth method.
Solid phase method calcination temperature is high, and powder is easy to reunite, however molten-salt growth method can not only be such that calcination temperature reduces, the powder of preparation
Uniformity is good, helps to improve the early strong effect of concrete.Meanwhile being also designed in component, propose the intensity of concrete
Height, the scope of application are wider；
Secondly, Li2CO3Function different from.It not only has good early strong effect, also has effects that cosolvent,
In calcining, liquid phase easy to form helps to reduce calcination temperature, reduces preparation cost；
Again, ZrO2、La2O3And Ta2O5Middle Zr4+、La3+、Ta5+Ion is high-valence cationic, and cohesion is strong, Ke Yijia
Fast hydration reaction promotes the curing progress of cement and concrete, improves early strong effect；
Finally, being also added into calcium aluminum hydrotalcite and nanometer calcium carbonate.Calcium aluminum hydrotalcite can increase the compactness of concrete,
Improve impervious, reduction laminated segregation and excreting water phenomenon, to significantly improve early strength of concrete；Nanometer calcium carbonate have at
Nuclear effect can be used as active centre, promote cement hydration process, improve concrete early intensity, while nanometer calcium carbonate also has
There is filling effect, increase the compactness of concrete, improves early strength of concrete.
Specific embodiment
The present invention provides a kind of early strength agent and preparation method thereof for concrete, to achieve the object of the present invention, technology
Scheme and effect are clearer, clear, and the present invention is described in more detail below.
A kind of early strength agent for concrete, is made of each component of following weight：CaO25~30 part, Al2O3
20~25 parts, 10~20 parts of MgO, ZrO22~5 parts, CaSO43~6 parts, 10~15 parts of celestite powder, bentonite in powder 10~15
Part, 5~9 parts of galapectite powder, La2O30.4~0.7 part, Ta2O50.3~0.5 part, Li2CO31~3 part, NaCl 0.1~0.3
Part, 0.1~0.3 part of KCl；
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 200~300 turns/min, 6~8h of ball milling；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 700~
1~2h, natural cooling are calcined in 800 DEG C of Muffle furnaces；
3) 60~120 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 3~5 parts of calcium aluminum hydrotalcites, 1~3 part of calcium metaaluminate and 2~4 parts of calcium acrylates are sequentially added, ball milling 20~
30min；
5) 0.1~0.3 part of calcium gluconate and 0.2~0.4 part of polycarboxylate water-reducer, 20~30min of ball milling are sequentially added；
6) 1~3 part of calcium dodecyl benzene sulfonate and 0.3~0.7 part of nanometer calcium carbonate are sequentially added, ball milling 30~
The early strength agent for concrete can be obtained in 40min；
The NaCl：KCl is 1：1.
Specific embodiment
Embodiment 1
A kind of early strength agent for concrete, is made of each component of following weight：28 parts of CaO, Al2O3 22
Part, 15 parts of MgO, ZrO24 parts, CaSO45 parts, 12 parts of celestite powder, 12 parts of bentonite in powder, 7 parts of galapectite powder, La2O3 0.5
Part, Ta2O50.4 part, Li2CO32 parts, 0.2 part of NaCl, 0.2 part of KCl；
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 250 turns/min, ball milling 7h；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 750 DEG C of horses
1.5h, natural cooling are not calcined in furnace；
3) 100 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 4 parts of calcium aluminum hydrotalcites, 2 parts of calcium metaaluminates and 3 parts of calcium acrylates, ball milling 25min are sequentially added；
5) 0.2 part of calcium gluconate and 0.3 part of polycarboxylate water-reducer, ball milling 25min are sequentially added；
6) 2 parts of calcium dodecyl benzene sulfonates and 0.5 part of nanometer calcium carbonate are sequentially added, use can be obtained in ball milling 35min
In the early strength agent of concrete.
Embodiment 2
A kind of early strength agent for concrete, is made of each component of following weight：25 parts of CaO, Al2O3 20
Part, 10 parts of MgO, ZrO22 parts, CaSO43 parts, 10 parts of celestite powder, 10 parts of bentonite in powder, 5 parts of galapectite powder, La2O3 0.4
Part, Ta2O50.3 part, Li2CO31 part, 0.1 part of NaCl, 0.1 part of KCl；
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 200 turns/min, ball milling 6h；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 700 DEG C of horses
1h, natural cooling are not calcined in furnace；
3) 60 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 3 parts of calcium aluminum hydrotalcites, 1 part of calcium metaaluminate and 2 parts of calcium acrylates, ball milling 20min are sequentially added；
5) 0.1 part of calcium gluconate and 0.2 part of polycarboxylate water-reducer, ball milling 20min are sequentially added；
6) 1 part of calcium dodecyl benzene sulfonate and 0.3 part of nanometer calcium carbonate are sequentially added, use can be obtained in ball milling 30min
In the early strength agent of concrete；
The NaCl：KCl is 1：1.
Embodiment 3
A kind of early strength agent for concrete, is made of each component of following weight：30 parts of CaO, Al2O3 25
Part, 20 parts of MgO, ZrO25 parts, CaSO46 parts, 15 parts of celestite powder, 15 parts of bentonite in powder, 9 parts of galapectite powder, La2O3 0.7
Part, Ta2O50.5 part, Li2CO33 parts, 0.3 part of NaCl, 0.3 part of KCl；
The preparation method of the early strength agent for concrete, includes the following steps：
It 1) is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material is placed in revolving speed
Ball milling on the ball mill of 300 turns/min, ball milling 8h；
2) be sieved, dry, and with it is dry-pressing formed in stainless steel mould, demould；And the sample after demoulding is placed in 800 DEG C of horses
2h, natural cooling are not calcined in furnace；
3) 120 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4) 5 parts of calcium aluminum hydrotalcites, 3 parts of calcium metaaluminates and 4 parts of calcium acrylates, ball milling 30min are sequentially added；
5) 0.3 part of calcium gluconate and 0.4 part of polycarboxylate water-reducer, ball milling 30min are sequentially added；
6) 3 parts of calcium dodecyl benzene sulfonates and 0.7 part of nanometer calcium carbonate are sequentially added, use can be obtained in ball milling 40min
In the early strength agent of concrete；
The NaCl：KCl is 1：1.
The early strength agent for being used for concrete made from above-described embodiment 1-3 is tested for the property using the prior art, is tested
As a result as shown in table 1 below：
1 early strength agent the performance test results of table
As can be seen that there is low forge for the early strength agent for concrete of different parameters preparation is with respect to background technique
Temperature and high compression strength are burnt, the development of early strength agent is conducive to.
Certainly, above it is that the preferred embodiments of the disclosure is described in detail, the present invention is not limited with this
Practical range, equivalence changes made by all principles under this invention, construction and structure should all be covered by protection of the invention
In range.
Claims (3)
1. a kind of early strength agent for concrete, it is characterised in that：It is made of each component of following weight：CaO 25~
30 parts, Al2O320~25 parts, 10~20 parts of MgO, ZrO22~5 parts, CaSO43~6 parts, it is 10~15 parts of celestite powder, swollen
Moisten native 10~15 parts of powder, 5~9 parts of galapectite powder, La2O3 0.4~0.7 part, Ta2O50.3~0.5 part, Li2CO3 1~3 part,
0.1~0.3 part of NaCl, 0.1~0.3 part of KCl, the NaCl：KCl is 1：1, preparation method includes the following steps：
1）It is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material be placed in revolving speed be 200~
Ball milling on the ball mill of 300 turns/min, 6~8h of ball milling；
2）Sieving, drying, and, demoulding dry-pressing formed with stainless steel mould；And the sample after demoulding is placed in 700~800 DEG C of horses
1~2h, natural cooling are not calcined in furnace；
3）60~120 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4）Sequentially add 3~5 parts of calcium aluminum hydrotalcites, 1~3 part of calcium metaaluminate and 2~4 parts of calcium acrylates, 20~30min of ball milling；
5）Sequentially add 0.1~0.3 part of calcium gluconate and 0.2~0.4 part of polycarboxylate water-reducer, 20~30min of ball milling；
6）Sequentially add 1~3 part of calcium dodecyl benzene sulfonate and 0.3~0.7 part of nanometer calcium carbonate, 30~40min of ball milling, i.e.,
It can obtain the early strength agent for concrete.
2. the early strength agent according to claim 1 for concrete, it is characterised in that：By each of following weight
Component is made：28 parts of CaO, Al2O322 parts, 15 parts of MgO, ZrO24 parts, CaSO45 parts, 12 parts of celestite powder, bentonite in powder
12 parts, 7 parts of galapectite powder, La2O3 0.5 part, Ta2O50.4 part, Li2CO3 2 parts, 0.2 part of NaCl, 0.2 part of KCl.
3. the preparation method of the early strength agent according to claim 1 for concrete, it is characterised in that：Including following step
Suddenly：
1）It is by weight component by said components：Dehydrated alcohol：Zirconia ball=1:1:3 material be placed in revolving speed be 250 turns/
Ball milling on the ball mill of min, ball milling 7h；
2）Sieving, drying, and, demoulding dry-pressing formed with stainless steel mould；And the sample after demoulding is placed in 750 DEG C of Muffle furnaces
Calcine 1.5h, natural cooling；
3）100 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitating；
4）Sequentially add 4 parts of calcium aluminum hydrotalcites, 2 parts of calcium metaaluminates and 3 parts of calcium acrylates, ball milling 25min；
5）Sequentially add 0.2 part of calcium gluconate and 0.3 part of polycarboxylate water-reducer, ball milling 25min；
6）2 parts of calcium dodecyl benzene sulfonates and 0.5 part of nanometer calcium carbonate are sequentially added, ball milling 35min can be obtained for mixing
Coagulate the early strength agent of soil.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022072779A1 (en) * | 2020-10-02 | 2022-04-07 | Gcp Applied Technologies Inc. | Early strength slag-based cementitious binder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109503112A (en) * | 2018-12-17 | 2019-03-22 | 濡ョ兢 | A kind of road and bridge concrete special and preparation method thereof |
| CN110054319A (en) * | 2019-05-11 | 2019-07-26 | 中铁二十一局集团第六工程有限公司 | A kind of constructing tunnel sewage water treatment method based on patina |
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| CN102485682A (en) * | 2010-12-06 | 2012-06-06 | 大连市铭源全科技开发有限公司 | Manufacture method of concrete early strength agent |
| CN104031624A (en) * | 2014-06-20 | 2014-09-10 | 西南石油大学 | Preparation method of early strength agent of low-density cement slurry |
| CN105084799A (en) * | 2015-08-14 | 2015-11-25 | 盐城工学院 | Cement early-strength admixture and preparation method thereof |
| KR101625075B1 (en) * | 2014-12-11 | 2016-05-27 | 주식회사 케미콘 | Liquid concrete admixture and concrete composition for revealing early-strength comprising the same |
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| CN102485682A (en) * | 2010-12-06 | 2012-06-06 | 大连市铭源全科技开发有限公司 | Manufacture method of concrete early strength agent |
| CN102126840A (en) * | 2011-03-02 | 2011-07-20 | 陈子川 | Low-temperature concrete early strength agent |
| CN104031624A (en) * | 2014-06-20 | 2014-09-10 | 西南石油大学 | Preparation method of early strength agent of low-density cement slurry |
| KR101625075B1 (en) * | 2014-12-11 | 2016-05-27 | 주식회사 케미콘 | Liquid concrete admixture and concrete composition for revealing early-strength comprising the same |
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