CN1076920A - Compound antifreezer for concrete construction - Google Patents
Compound antifreezer for concrete construction Download PDFInfo
- Publication number
- CN1076920A CN1076920A CN 92102097 CN92102097A CN1076920A CN 1076920 A CN1076920 A CN 1076920A CN 92102097 CN92102097 CN 92102097 CN 92102097 A CN92102097 A CN 92102097A CN 1076920 A CN1076920 A CN 1076920A
- Authority
- CN
- China
- Prior art keywords
- reducing agent
- compound antifreezer
- accounts
- carrier
- activity component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/601—Agents for increasing frost resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of novel compound antifreezer for concrete construction, it has good resistance to frost.It is by high efficiency water reducing agent, ordinary water-reducing agent, and high-activity component, carrier and sodium salt are formed.Be the necessary and sufficient composition of compound antifreezer wherein, add or do not add the sodium salt composition with high-activity component and carrier.Because of the present invention improving the theoretical basis that pore structure of cement stone is design, so have antifreeze and improve the characteristics of concrete early stage and later strength, more be applicable to the place of easy generation alkali-aggregate reaction.This product cost is low, excellent property, and the scope of application is wide, the service efficiency height.
Description
The present invention relates to a kind of concreting in cold weather with compound antifreezer and series thereof, belong to building material field.
Be generally and prevent concrete mix suffer freeze injury under subzero temperature Celsius, people adopt and add frostproofer or methods such as steam curing, insulation, but the latter is because of the complexity of constructing, and efficient is low, are unsuitable for big area and adopt and often replaced by the former.Research by analysis, the various countries scholar generally believes, cause the ruined reason of concrete structure of new cast under subzero temperature mainly to be: because of water freezing, volumetric expansion in the inner pore of cement stone cause, so traditional antifreeze viewpoint is the freezing point reduction with water, make the good concrete of cast continue aquation, sclerosis at subzero environment.Therefore many in traditional frostproofer is antifreeze composition with Sodium Nitrite, is early strong composition with sodium sulfate, and the shared ratio of sodium salt composition is very high.As the frostproofer of introducing among middle " concrete antifreezing admixture " (translated name) author V.B.Ratinov that publishes of Soviet Union's " low temperature Building technology " 2 phases in 1987 (beginning to publish in instalments for five phases) and the T.I.Rozebeng, and the compound antifreezer composition that China Heilungkiang low temperature building research station produces is: high efficiency water reducing agent accounts for 0.06 part, ordinary water-reducing agent accounts for 0.03 part, Sodium Nitrite is 0.30 part, sodium sulfate is 0.20 part, carrier is 0.41 part, cause the appearance of following problem like this: (1) is very high because of sodium salt proportion in frostproofer, be generally more than 50%, and the price of Sodium Nitrite is very expensive, certainly will cause the raising of the whole cost of frostproofer; (2) if with content of sodium nitrite be reduced to cement weight 2%, that sodium sulfate is reduced to 1.5% antifreezing effect is just not obvious; (3) under the situation that alkali-aggregate reaction may take place, this frostproofer just can not use.So we propose a kind of novel antifreeze viewpoint and anti-freeze compound at the problems referred to above.
Purpose of the present invention is exactly to propose a kind of novel compound antifreezer and series thereof, it can be according to different service requirementss, be mixed with by high efficiency water reducing agent by different ratios, ordinary water-reducing agent, high-activity component, the compound antifreezer that carrier and sodium salt are formed, and with the silicide be the high-activity component of main component and carrier be frostproofer fully and neccessary composition, add or do not add the sodium salt composition, make pore structure of cement stone change, thereby liquid phase freezing point in the reduction pore, improve hole and whole structural strength thereof, reduce cost simultaneously, the scope of application is wide, and more be applicable to subtract-possible place takes place in aggregate reaction.
The object of the present invention is achieved like this: in this compound antifreezer, employing is the high-activity component material of main component with the silicide, its particle is tiny, particle diameter is that big (and the Portland cement powder directly is 1um～40um) for 0.1um～1um, specific surface area, thereby after mixing stirring, it is particles filled and improved colloidal structure, the aperture is diminished, the contact area increases between particle, avidity strengthens, and pore distribution is even, and the early strength and the later strength of cement (concrete) all are improved; Simultaneously the liquid phase freezing point of pore in the cement is descended significantly, thereby reach antifreeze purpose because of having reduced the aperture; Again because of not having or seldom contain the sodium salt composition in the prescription, and the high-activity component cost is lower, so the frostproofer cost reduces naturally, and is applicable to the place of easy generation alkali-aggregate reaction.
The present invention is changed concrete inner structure because of adopting the high-activity component material, and realizes antifreezely, and so the purpose of gaining in strength is mentality of designing novelty, reliably; Even under the very low situation of envrionment temperature, produce ice crystal, also because of its granularity is very little, and disperse and very little, so the suitable environment wide ranges to concrete destructive force; Reduce because of this recombiner again or do not use the sodium salt composition, and use high-activity component cheaply, make the cost of whole frostproofer reduce, and more be applicable to the place of easy generation alkali-aggregate reaction; Also because of use the add-on of this compound antifreezer in concrete only account for cement heavy 4～7%, even can also be low to moderate 3%, wherein the content of Sodium Nitrite only account for cement heavy 0～1.5%, so product performance are good, service efficiency is high, have and well popularize meaning.
Specifically introduce the performance of this compound antifreezer and series thereof below in conjunction with embodiment.
Embodiment 1: the compound antifreezer component is: 0.06 part of high efficiency water reducing agent, 0.03 part of ordinary water-reducing agent, 0.50 part of high-activity component, 0.41 part in carrier.
Wherein: the normal concrete proportioning:
Cement: water: sand: stone=C: W: S: G=1: 0.58: 2.17: 3.54
The proportioning of being examined concrete and being examined negative temperature concrete is:
Cement: water: sand: stone=C: W: S: G=1: 0.49: 2.25: 3.67
Sand coarse aggregate ratio=38%, water-reducing rate 14%, the add-on of compound antifreezer account for cement heavy 6%.
Three every group of sample dimensions: 10 * 10 * 10cm
Normal concrete does not add any admixture, marks the mean compressive strength R that supports after 28 days
CExpression;
Examined concrete and added the mean compressive strength R that 6% compound antifreezer is supported through 28 days marks
CAExpression;
Examined concrete and add 6% compound antifreezer through-10 ℃ of following maintenances 7 days, mark is supported the mean compressive strength R of 28 days and 56 days again
ATExpression;
According to R
C, R
CA, R
AT(-7+56)Calculating its compressive strength rate is:
R
28＝R
CA/R
C＝118.5%
R
-7+28＝RAT/Rc＝118.8%
R
-7+56＝RAT/R
C＝134.2%
Embodiment 2: compound antifreezer (traditional) component is: 0.06 part of high efficiency water reducing agent, 0.03 part of ordinary water-reducing agent, 0.30 part of Sodium Nitrite, 0.20 part in sodium sulfate, 0.41 part in carrier.
Experiment condition is with embodiment 1, and compressive strength rate is so:
R
28＝R
CA/R
C＝91.7%
R
-7+28＝RAT/R
C＝95.7%
R
-7+56＝RAT/R
C＝104.5%
Embodiment 3: the compound antifreezer component is: 0.06 part of high efficiency water reducing agent, 0.03 part of ordinary water-reducing agent, 0.10 part of Sodium Nitrite, 0.20 part in sodium sulfate, 0.10 part of high-activity component, 0.51 part in carrier.
Experiment condition is with embodiment 1, and its compressive strength rate is:
R
28＝R
CA/R
C＝111.6%
R
-7+28＝RAT/R
C＝129.8%
R
-7+56＝RAT/R
C＝135.6%
Embodiment 4: the compound antifreezer component is: 0.06 part of high efficiency water reducing agent, 0.03 part of ordinary water-reducing agent, 0.20 part in sodium sulfate, 0.10 part of calcium nitrite, 0.10 part of high-activity component, 0.51 part in carrier.
Experiment condition is with embodiment 1, and its compressive strength rate is:
R
28＝R
CA/R
C＝114.5%
R
-7+28＝RAT/R
C＝126.5%
R
-7+56＝RAT/R
C＝141.2%
The respective standard of above-mentioned all experimental datas and national standard concrete antifreezer compares, and all satisfies salable product and first grade requirement.
Attached national standard data sheet:
To mixing of the requirement of frostproofer concrete crushing strength than (%)
Annotate: R
C-normal concrete mark is supported 28 days ultimate compression strength
R
CA-examined concrete to mark the ultimate compression strength of supporting 28 days
R
AT-examined negative temperature concrete, negative temperature conservation 7 days is the ultimate compression strength of maintenance 28 days or 56 days again
Claims (6)
1, a kind ofly relate to series concrete construction and use compound antifreezer, it is by high efficiency water reducing agent, ordinary water-reducing agent, high-activity component and carrier and Sodium Nitrite, sodium sulfate, nitrocalcite composition.It is characterized in that: be the high-activity component of main component and necessity that carrier is compound antifreezer and composition fully with the silicide, and can cancel or reduce the add-on of sodium salt, and particularly prevent the requirement of alkali-aggregate reaction according to service requirements, make up above-mentioned certain several composition and be made into serial compound antifreezer by different ratios.
2, compound antifreezer according to claim 1 is characterized in that: high efficiency water reducing agent and ordinary water-reducing agent account for 0.06-0.15 part of compound antifreezer weight, and high-activity component accounts for 0.15-0.50 part, and carrier accounts for 0.35-0.70 part.
3, serial compound antifreezer according to claim 1, it is characterized in that: high efficiency water reducing agent and ordinary water-reducing agent account for 0.05-0.15 part of compound antifreezer weight, Sodium Nitrite and sodium sulfate account for 0.20-0.50 part, and high-activity component accounts for 0.04-0.30 part, and carrier accounts for 0.30-0.70 part.
4, serial compound antifreezer according to claim 1, it is characterized in that: high efficiency water reducing agent and ordinary water-reducing agent account for 0.06-0.14 part of compound antifreezer weight, sodium sulfate accounts for 0.10-0.30 part, and high-activity component accounts for 0.15-0.30 part, and carrier accounts for 0.30-0.70 part.
5, serial compound antifreezer according to claim 1, it is characterized in that: high efficiency water reducing agent and ordinary water-reducing agent account for 0.05-0.14 part of compound antifreezer weight, sodium sulfate and SODIUMNITRATE account for 0.15-0.45 part, and high-activity component accounts for 0.10-0.50 part, and carrier accounts for 0.25-0.70 part.
6, according to the described serial compound antifreezer of claim 2.3.4.5, it is characterized in that: when constructing under-10 ℃ of environment, the add-on of compound antifreezer in concrete mix accounts for the wherein 4-7% of cement weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102097 CN1076920A (en) | 1992-03-31 | 1992-03-31 | Compound antifreezer for concrete construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102097 CN1076920A (en) | 1992-03-31 | 1992-03-31 | Compound antifreezer for concrete construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076920A true CN1076920A (en) | 1993-10-06 |
Family
ID=4939460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92102097 Pending CN1076920A (en) | 1992-03-31 | 1992-03-31 | Compound antifreezer for concrete construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2543230C2 (en) * | 2012-12-13 | 2015-02-27 | Открытое акционерное общество "Полипласт" (ОАО "Полипласт") | Anti-frost complex additive and methods to produce dry form of additive (versions) |
| RU2728023C1 (en) * | 2019-10-29 | 2020-07-28 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Antifreeze additive for concrete mixture |
-
1992
- 1992-03-31 CN CN 92102097 patent/CN1076920A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2543230C2 (en) * | 2012-12-13 | 2015-02-27 | Открытое акционерное общество "Полипласт" (ОАО "Полипласт") | Anti-frost complex additive and methods to produce dry form of additive (versions) |
| RU2728023C1 (en) * | 2019-10-29 | 2020-07-28 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Antifreeze additive for concrete mixture |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |