CN1587172A - Preparing a product for delaying concrete hardening - Google Patents
Preparing a product for delaying concrete hardening Download PDFInfo
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- CN1587172A CN1587172A CN 200410069300 CN200410069300A CN1587172A CN 1587172 A CN1587172 A CN 1587172A CN 200410069300 CN200410069300 CN 200410069300 CN 200410069300 A CN200410069300 A CN 200410069300A CN 1587172 A CN1587172 A CN 1587172A
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- concrete
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- retardant
- delaying
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- Silicates, Zeolites, And Molecular Sieves (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides one kind of concrete setting retarding product. The concrete retarder is prepared with zeolite, iron ore, aluminum sulfate, calcium gluconate, hydroxy carboxylic acid and alumina powder in certain proportion and through mixing and grinding to 300 mesh. It has the concrete setting retarding period of 180 min when the added amount is 0.3-1.2 % of cement weight, and 360 min when the added amount is 1.5-2 %. The present invention may be used in compounding high strength, great volume and remote constructed concrete.
Description
Technical field
The present invention relates to the mass concrete of the remote transportation of a kind of construction at high temperature, can reduce hydration heat of concrete, but the product of delayed coagulation time.
Background technology
Build at present large-scale concrete engineering quantity growth, particularly construction during hot season, owing to produce a large amount of hydration heat when theing cement solidifies, cause producing be full of cracks, loss intensity after the concrete setting, difficulty can meet the functional quality requirement.
Summary of the invention
Preparation high strength, mass concrete transport concrete at a distance, all need the delayed coagulation time, reduce hydration heat and work the mischief, and support when causing concrete formation to change formed influence because of high temperature.
1, characteristics of the present invention are: with zeolite 28～36%, common iron ore 43～26%, Tai-Ace S 150 7～13%, calglucon 4～10%, hydroxycarboxylic acid 4～7%, aluminum oxide powder 14～8% grinds after the mixing, and fineness reaches 300 orders, promptly is retardant.
2, characteristics of the present invention are: with zeolite powder 40～33%, and common powdered iron ore 29～34%, Tai-Ace S 150 18～8%, calglucon 6～10%, hydroxycarboxylic acid 3～7%, aluminum oxide powder 4～8%, grind after the mixing, fineness reaches 300 orders, promptly is retardant.
3, during retardant concrete batching of the present invention, the weight ratio 0.3～1.2% of pressing cement, can delay the concrete setting time is 180min; Press the weight ratio 1.5～2% of cement, can delay the concrete setting time is 360min, mixes the concrete that retardant of the present invention is used for remote construction, reduces hydration heat and suppresses the be full of cracks problem, can improve intensity about 10%.
Embodiment
1, adopts the present invention's zeolite powder 28～36%, common powdered iron ore 43～26%, Tai-Ace S 150 7～13%, calglucon 4～10%, hydroxycarboxylic acid 4～7%, aluminum oxide powder 14～8%, grind after the mixing, fineness reaches 300 orders, promptly is retardant of the present invention; Mix retardant 1.2% when mixing the system concrete, with P.O 42.5 cement 100%, medium sand 115%, grouan particle diameter 2-6cm stone 210%, mixing water 0.4-0.55; Concrete batching, with ready-mixed concrete be transported into cast in situs, vibrate, (conventional setting time 150min.) present technique delayed coagulation time 180min.Pressed the code requirement maintenance 14 days, its 28d intensity increases by 12%.
2, with the present invention's zeolite 40～33%, common iron ore 29～34%, Tai-Ace S 150 18～8%, calglucon 6～10%, hydroxycarboxylic acid 3～7%, aluminum oxide powder 4～8% grinds after the mixing, and fineness reaches 300 orders, promptly is retardant of the present invention; Motorway is built in the somewhere, stirring station is from working-yard 30km, concrete plan setting time is 300min, each casting concrete thickness is 40cm, but grating concrete setting time 150min mixes retardant 1.8% of the present invention, with P.O 42.5 cement 100%, medium sand 115%, grouan particle diameter 2-6cm stone 210%, mixing water 0.4-0.55; Can delay the concrete setting time is 330min, is used for the concrete of remote construction, meets engine request.Reduce hydration heat, do not have be full of cracks, can improve intensity 16%.
Claims (4)
1, the present invention relates to prepare a kind of product of delaying concrete hardening.
2, according to claim 1, the product for preparing a kind of delaying concrete hardening, it is characterized in that: with zeolite 28～36%, common iron ore 43～26%, Tai-Ace S 150 7～13%, calglucon 4～10%, hydroxycarboxylic acid 4～7%, aluminum oxide powder 14～8% grinds after the mixing, fineness reaches 300 orders, promptly is retardant.
3, according to claim 1, the product for preparing a kind of delaying concrete hardening, it is characterized in that: with zeolite powder 40～33%, common powdered iron ore 29～34%, Tai-Ace S 150 18～8%, calglucon 6～10%, hydroxycarboxylic acid 3～7%, aluminum oxide powder 4～8% grinds after the mixing, fineness reaches 300 orders, promptly is retardant.
4, according to claim 1, prepare a kind of product of delaying concrete hardening, it is characterized in that: during retardant concrete batching of the present invention, the weight ratio 0.3～1.2% of pressing cement, can delay the concrete setting time is 180min; Press the weight ratio 1.5～2% of cement, can delay the concrete setting time is 360min, mixes the concrete that retardant of the present invention is used for remote construction, reduces hydration heat, does not have be full of cracks, can improve intensity more than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069300 CN1587172A (en) | 2004-07-21 | 2004-07-21 | Preparing a product for delaying concrete hardening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069300 CN1587172A (en) | 2004-07-21 | 2004-07-21 | Preparing a product for delaying concrete hardening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1587172A true CN1587172A (en) | 2005-03-02 |
Family
ID=34604318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410069300 Pending CN1587172A (en) | 2004-07-21 | 2004-07-21 | Preparing a product for delaying concrete hardening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1587172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000817A (en) * | 2015-05-21 | 2015-10-28 | 苏州市湘园特种精细化工有限公司 | Concrete retarder and preparation method thereof |
-
2004
- 2004-07-21 CN CN 200410069300 patent/CN1587172A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000817A (en) * | 2015-05-21 | 2015-10-28 | 苏州市湘园特种精细化工有限公司 | Concrete retarder and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |