CN106365490B - The preparation method of concrete early strength agent - Google Patents

The preparation method of concrete early strength agent Download PDF

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Publication number
CN106365490B
CN106365490B CN201610696808.7A CN201610696808A CN106365490B CN 106365490 B CN106365490 B CN 106365490B CN 201610696808 A CN201610696808 A CN 201610696808A CN 106365490 B CN106365490 B CN 106365490B
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parts
ball milling
early strength
strength agent
calcium
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CN106365490A (en
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王恒
尹丹
黄煌
陈威
阮长泰
欧鹏
谢体云
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GUILIN HUAYUE ENVIRONMENTAL PROTECTION CO Ltd
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GUILIN HUAYUE ENVIRONMENTAL PROTECTION CO Ltd
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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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a kind of preparation method of concrete early strength agent, the preparation method is made of each component of following weight：20~30 parts of CaO, Al2O315~25 parts, TiO23~5 parts, FeSO44~6 parts, 10~15 parts of SILICA FUME, 15~20 parts of Fluorspar Powder, Y2O30.5~0.7 part, Li2CO31~3 part, 0.1~0.3 part of NaCl, 0.1~0.3 part of KCl, and through being calcined at ball milling, 800 900 DEG C, again with the reagents ball milling such as calcium aluminum hydrotalcite, you can obtain concrete early strength agent.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

The preparation method of concrete early strength agent
Technical field
The present invention relates to a kind of preparation methods of concrete early strength agent, belong to technical field of concrete additives.
Background technology
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 composition, 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 higher price, 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 early strength agent deep exploration and research, 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 Li2CO3Ball milling, you can obtain low-density cement mortar early strength agent.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 is relatively high, this virtually increases manufacturing cost, constrains morning to a certain extent The development of strong agent.Therefore, continuing to explore is very important with research early strength agent.
Invention content
Middle early strength agent is to the technical problem of concrete strength aspect and calcination temperature deficiency, this hair for the above-mentioned prior art It is bright that the technical problem to be solved is that propose a kind of concrete early strength agent that can be effectively improved intensity and reduce calcination temperature Preparation method.
A kind of concrete early strength agent is made of each component of following weight：20~30 parts of CaO, Al2O315~ 25 parts, TiO23~5 parts, FeSO44~6 parts, 10~15 parts of SILICA FUME, 15~20 parts of Fluorspar Powder, Y2O30.5~0.7 part, Li2CO31~3 part, 0.1~0.3 part of NaCl, 0.1~0.3 part of KCl.
Preferably,
A kind of concrete early strength agent is made of each component of following weight：25 parts of CaO, Al2O320 parts, TiO2 4 parts, FeSO45 parts, 12 parts of SILICA FUME, 18 parts of Fluorspar Powder, Y2O30.6 part, Li2CO32 parts, 0.2 part of NaCl, 0.2 part of KCl.
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 200~300 turns/min, 6~8h of ball milling；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 800~ 1~2h, natural cooling are calcined in 900 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 precipitation；
4) 3~7 parts of calcium aluminum hydrotalcites and 2~4 parts of calcium citrates, 20~30min of ball milling are sequentially added；
5) 0.2~0.4 part of calcium tartrate and 0.1~0.3 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 nano-calcium carbonate are sequentially added, ball milling 30~ 40min, you can obtain concrete early strength agent.
Preferably,
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 250 turns/min, ball milling 7h；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 850 DEG C of horses 1.5h, natural cooling are not calcined in stove；
3) 100 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitation；
4) 5 parts of calcium aluminum hydrotalcites and 3 parts of calcium citrates, ball milling 25min are sequentially added；
5) 0.3 part of calcium tartrate and 0.2 part of polycarboxylate water-reducer, ball milling 25min are sequentially added；
6) 2 parts of calcium dodecyl benzene sulfonates and 0.5 part of nano-calcium carbonate, ball milling 35min, you can mixed are sequentially added Solidifying soil early strength agent.
The NaCl：KCl is 1：1.
Compared with prior art, the beneficial effects of the invention are as follows：
First, 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, so that the intensity of concrete is carried Height, the scope of application are wider；
Secondly, Li2CO3Function different from.It not only has good early strong effect, also has effects that cosolvent, It in calcining, is easy to form liquid phase, helps to reduce calcination temperature, reduce manufacturing cost；
Again, TiO2And Y2O3Middle Ti4+、Y3+Ion is high-valence cationic, and cohesion is strong, can be reacted with acceleration of hydration, Promote the curing progress of cement and concrete, improves early strong effect；
Finally, calcium aluminum hydrotalcite and nano-calcium carbonate are also added into.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；Nano-calcium carbonate have at Nuclear effect can be used as active centre, promote cement hydration process, improve concrete early intensity, while nano-calcium carbonate also has There is filling effect, increase the compactness of concrete, improves early strength of concrete.
Specific implementation mode
The present invention provides a kind of preparation method of concrete early strength agent, to achieve the object of the present invention, technical solution and effect Fruit is clearer, clear, and the present invention is described in more detail below.
A kind of concrete early strength agent is made of each component of following weight：20~30 parts of CaO, Al2O315~ 25 parts, TiO23~5 parts, FeSO44~6 parts, 10~15 parts of SILICA FUME, 15~20 parts of Fluorspar Powder, Y2O30.5~0.7 part, Li2CO31~3 part, 0.1~0.3 part of NaCl, 0.1~0.3 part of KCl；
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 200~300 turns/min, 6~8h of ball milling；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 800~ 1~2h, natural cooling are calcined in 900 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 precipitation；
4) 3~7 parts of calcium aluminum hydrotalcites and 2~4 parts of calcium citrates, 20~30min of ball milling are sequentially added；
5) 0.2~0.4 part of calcium tartrate and 0.1~0.3 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 nano-calcium carbonate are sequentially added, ball milling 30~ 40min, you can obtain concrete early strength agent；
The NaCl：KCl is 1：1.
Specific implementation mode
Embodiment 1
A kind of concrete early strength agent is made of each component of following weight：25 parts of CaO, Al2O320 parts, TiO2 4 parts, FeSO45 parts, 12 parts of SILICA FUME, 18 parts of Fluorspar Powder, Y2O30.6 part, Li2CO32 parts, 0.2 part of NaCl, 0.2 part of KCl；
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 250 turns/min, ball milling 7h；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 850 DEG C of horses 1.5h, natural cooling are not calcined in stove；
3) 100 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitation；
4) 5 parts of calcium aluminum hydrotalcites and 3 parts of calcium citrates, ball milling 25min are sequentially added；
5) 0.3 part of calcium tartrate and 0.2 part of polycarboxylate water-reducer, ball milling 25min are sequentially added；
6) 2 parts of calcium dodecyl benzene sulfonates and 0.5 part of nano-calcium carbonate, ball milling 35min, you can mixed are sequentially added Solidifying soil early strength agent.
Embodiment 2
A kind of concrete early strength agent is made of each component of following weight：20 parts of CaO, Al2O315 parts, TiO2 3 parts, FeSO44 parts, 10 parts of SILICA FUME, 15 parts of Fluorspar Powder, Y2O30.5 part, Li2CO31 part, 0.1 part of NaCl, 0.1 part of KCl.
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 200 turns/min, ball milling 6h；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 800 DEG C of horses 1h, natural cooling are not calcined in stove；
3) 60 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitation；
4) 3 parts of calcium aluminum hydrotalcites and 2 parts of calcium citrates, ball milling 20min are sequentially added；
5) 0.2 part of calcium tartrate and 0.1 part of polycarboxylate water-reducer, ball milling 20min are sequentially added；
6) 1 part of calcium dodecyl benzene sulfonate and 0.3 part of nano-calcium carbonate, ball milling 30min, you can mixed are sequentially added Solidifying soil early strength agent.
Embodiment 3
A kind of concrete early strength agent is made of each component of following weight：30 parts of CaO, Al2O325 parts, TiO2 5 parts, FeSO46 parts, 15 parts of SILICA FUME, 20 parts of Fluorspar Powder, Y2O30.7 part, Li2CO33 parts, 0.3 part of NaCl, 0.3 part of KCl.
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material is placed in rotating speed Ball milling on the ball mill of 300 turns/min, ball milling 8h；
2) it is sieved, dries, dry-pressing formed, demoulding in stainless steel mould is used in combination；And the sample after demoulding is placed in 900 DEG C of horses 2h, natural cooling are not calcined in stove；
3) 120 mesh powders are ground into, and are washed with deionized, until with AgNO3It examines until being generated without precipitation；
4) 7 parts of calcium aluminum hydrotalcites and 4 parts of calcium citrates, ball milling 30min are sequentially added；
5) 0.4 part of calcium tartrate and 0.3 part of polycarboxylate water-reducer, ball milling 30min are sequentially added；
6) 3 parts of calcium dodecyl benzene sulfonates and 0.7 part of nano-calcium carbonate, ball milling 40min, you can mixed are sequentially added Solidifying soil early strength agent.
Concrete early strength agent made from above-described embodiment 1-3 is tested for the property using the prior art, test result is such as Shown in the following table 1：
1 early strength agent the performance test results of table
As can be seen that for the concrete early strength agent of different parameters preparation is with respect to background technology, there is low calcination temperature With high compression strength, be conducive to the development of early strength agent.
Certainly, it is that the preferred embodiments of the disclosure is described in detail above, 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 the protection of the present invention In range.

Claims (2)

1. a kind of preparation method of concrete early strength agent, it is characterised in that：It is made of each component of following weight：CaO 20~30 parts, Al2O315~25 parts, TiO23~5 parts, FeSO44~6 parts, 10~15 parts of SILICA FUME, Fluorspar Powder 15~20 Part, Y2O30.5~0.7 part, Li2CO31~3 part, 0.1~0.3 part of NaCl, 0.1~0.3 part of KCl；
The mass ratio of the NaCl and KCl is 1：1；
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material be placed in rotating speed be 200~ Ball milling on the ball mill of 300 turns/min, 6~8h of ball milling；
2) be sieved, dry, be used in combination stainless steel mould it is dry-pressing formed, demould；And the sample after demoulding is placed in 800~900 DEG C of horses 1~2h, natural cooling are not calcined in stove；
3) 60~120 mesh powders are ground into, and are washed with deionized, until generation without precipitation until being examined with AgNO3；
4) 3~7 parts of calcium aluminum hydrotalcites and 2~4 parts of calcium citrates, 20~30min of ball milling are sequentially added；
5) polycarboxylate water-reducer that 0.2~0.4 part of calcium tartrate and parts by weight are 0.1~0.3 part is sequentially added, ball milling 20~ 30min；
6) 1~3 part of calcium dodecyl benzene sulfonate and 0.3~0.7 part of nano-calcium carbonate are sequentially added, 30~40min of ball milling, i.e., Concrete early strength agent can be obtained.
2. the preparation method of concrete early strength agent according to claim 1, it is characterised in that：By following weight Each component be made：25 parts of CaO, Al2O320 parts, TiO24 parts, FeSO45 parts, 12 parts of SILICA FUME, 18 parts of Fluorspar Powder, Y2O3 0.6 part, Li2CO32 parts, 0.2 part of NaCl, 0.2 part of KCl；
The preparation method of the concrete early strength agent, includes the following steps：
1) it is component by weight by said components：Absolute ethyl alcohol：Zirconia ball=1:1:3 material be placed in rotating speed be 250 turns/ Ball milling on the ball mill of min, ball milling 7h；
2) be sieved, dry, be used in combination stainless steel mould it is dry-pressing formed, demould；And the sample after demoulding is placed in 850 DEG C of Muffle furnaces Calcine 1.5h, natural cooling；
3) 100 mesh powders are ground into, and are washed with deionized, until generation without precipitation until being examined with AgNO3；
4) 5 parts of calcium aluminum hydrotalcites and 3 parts of calcium citrates, ball milling 25min are sequentially added；
5) 0.3 part of calcium tartrate and parts by weight are sequentially added as 0.2 part of polycarboxylate water-reducer, ball milling 25min；
6) 2 parts of calcium dodecyl benzene sulfonates and 0 .5 parts of nano-calcium carbonate, ball milling 35min, you can obtain coagulation are sequentially added Native early strength agent.
CN201610696808.7A 2016-08-19 2016-08-19 The preparation method of concrete early strength agent Active CN106365490B (en)

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CN108439840A (en) * 2018-03-31 2018-08-24 芜湖扬展新材料科技服务有限公司 A kind of no chlorine concrete early strength agent

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CN102485682B (en) * 2010-12-06 2015-01-21 大连市铭源全科技开发有限公司 Manufacture method of concrete early strength agent
CN102126840B (en) * 2011-03-02 2012-07-25 陈子川 Low-temperature concrete early strength agent
CN104031624B (en) * 2014-06-20 2016-08-24 西南石油大学 A kind of preparation method of low-density cement mortar early strength agent
KR101625075B1 (en) * 2014-12-11 2016-05-27 주식회사 케미콘 Liquid concrete admixture and concrete composition for revealing early-strength comprising the same
CN105084799B (en) * 2015-08-14 2017-03-08 盐城工学院 A kind of cement early strength agent and preparation method thereof

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