CN102701631A - Internal curing agent of concrete - Google Patents
Internal curing agent of concrete Download PDFInfo
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- CN102701631A CN102701631A CN2012101503460A CN201210150346A CN102701631A CN 102701631 A CN102701631 A CN 102701631A CN 2012101503460 A CN2012101503460 A CN 2012101503460A CN 201210150346 A CN201210150346 A CN 201210150346A CN 102701631 A CN102701631 A CN 102701631A
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- curing agent
- concrete
- slag
- absorbent resin
- ground
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an internal curing agent of concrete, which solves the problems of external curing after the pouring of the concrete, complex construction, wastes in human and material resources and poor effect, the internal curing agent is characterized in that the internal curing agent comprises water-absorbent resin, coal ash and slag, the above raw materials are put into a ball grinding mill at the ratio of 5-8 of the water-absorbent resin, 1-2 of coal ash and 1-3 of slag to be co-ground for 30 min to 50 min. The granularity of the ground mixture reaches more than 600 meshes, the water absorption of the water-absorbent resin is about 10 times to 30 times of water absorption weight ratio, the coal ash is second-level coal ash, the activity of the ground slag is greater than 95% within 28 days after being ground, ball grinding equipment is adopted in the co-grinding process, the internal curing agent has the advantages of simple construction, easy operation, cost-saving and good effect and can be adapted to the application of concrete in pouring curing.
Description
Technical field
The present invention is specifically related to a kind of concrete inner curing agent, belongs to the technical field of material of construction inside concrete maintenance goods.
Technical background:
Commerical ready-mixed concrete carries out outside maintenance behind casting complete, mode such as brushing curing agent, regularly watering or covered with plastic film etc.These measures can only be carried out maintenance to concrete surface, and the concrete surface dehydration is reduced, and waste person property power.The brushing curing agent because the workmen lacks a sense of responsibility, the complex construction difficulty of construction is big or the influence of factors such as concrete surface stacking foreign material, personnel's vehicle to run, makes effect undesirable, even does not have effect in actual mechanical process.And the mode of traditional covering curing can't cover the concrete at positions such as beam column wall fully, caused the solid concrete intensity at above-mentioned position on the low side.Curing agent mainly contains three types at present domestic: a kind of is the light-weight aggregate or the haydite of vesicular structure; They mainly are through wick water; But its water-retaining capacity is low, and causes the particle come-up in the construction easily and the influence construction, and the while has also been reduced the original intensity of concrete.Second type is pure super absorbent resin (SAP), and curing agent dispersiveness is relatively poor in such, in concrete, should not mix, and suction back particle is bigger, behind the later stage drying shrinkage concrete strength is had considerable influence; Curing agent is that raw material is synthetic with plant amylum etc. in the 3rd type, and complex manufacturing technology and cost are higher, are difficult in actual production, promoting.
Summary of the invention
The object of the invention for overcoming above deficiency, provides a kind of SAP is ground with mineral admixture in concrete altogether exactly, makes its absorbent composition particle thinner; Do not influence late strength of concrete, concrete inner continuing after final set supplied water, reached inner natural curing condition; Do not wait measure and rely on outside watering, operational procedure is simplified, simultaneously; Interior curing agent is to concrete strength and not influence of serviceability, and effective a kind of concrete inner curing agent.
Technical scheme of the present invention is to realize like this; Described a kind of concrete inner curing agent; Form by absorbent resin, flyash, slag, it is characterized in that the ratio input ball mill of above-mentioned starting material according to absorbent resin 5-8, flyash 1-2, slag 1-3 ground 30-50min altogether.The mixture granularity reaches more than 600 orders after making grinding, curing agent finished product in promptly getting.The water absorbing properties of described absorbent resin is about 10-30 times of suction weight ratio.Said flyash is second class powered coal ash.Back 28 days activity that said slag is levigate are greater than 95%.Said grinding process altogether is characterised in that the employing ball-grinding machine, and said finished product grain size characteristic is must reach more than 600 orders.
A kind of concrete inner curing agent of the present invention has the water seasoning of need not, or the brushing curing agent.Make operational procedure obtain simplifying.Good with the sand-cement slurry conformability.Added nonmetal discarded mineral, it is also useful to environmental protection not only to have reduced production cost.Suction back grain graininess is slightly less than powder granularity in the concrete, after interior maintenance processes finishes, the cavity that stays in useful bubble magnitude range, the beneficial effect that concrete weather resistance is promoted to some extent.
Embodiment
Embodiment 1
Select starting material according to absorbent resin: flyash: the ratio of slag=5: 1: 2 drops into ball mill, grinds 40min altogether.Curing agent finished product in promptly getting.Then this finished product is dropped into stirrer by every side 5kg with other starting material, get final product.Be mixed with concrete test block and the normal curing concrete test block intensity basically identical of not mixing product of the present invention under the natural curing condition of product of the present invention through the production actual verification, and concrete early crack probability decreases.
Embodiment 2
Select starting material according to absorbent resin: flyash: the ratio of slag=5: 2: 1.5 drops into ball mill, grinds 35min altogether.Curing agent finished product in promptly getting.Then this finished product is dropped into stirrer by every side 5kg with other starting material, get final product.Through the production actual verification, in big volume foundation works, to use under the situation of the concrete that is mixed with product of the present invention maintenance measure outside not having watering of covering etc., the concrete solid structural strength is up to standard, and concrete does not have obvious crack.
Claims (5)
1. a concrete inner curing agent is made up of absorbent resin, flyash, slag, it is characterized in that the ratio input ball mill of above-mentioned starting material according to absorbent resin 5-8, flyash 1-2, slag 1-3 ground 30-50min altogether.The mixture granularity reaches more than 600 orders after making grinding, curing agent finished product in promptly getting.
2. a kind of concrete inner curing agent as claimed in claim 1 is characterized in that the water absorbing properties of described absorbent resin is about 10-30 times of suction weight ratio.
3. a kind of concrete inner curing agent as claimed in claim 1 is characterized in that said flyash is second class powered coal ash.
4. a kind of concrete inner curing agent as claimed in claim 1 is characterized in that levigate back 28 days activity of said slag greater than 95%, and grinding process is characterised in that the employing ball-grinding machine altogether.
5. a kind of concrete inner curing agent as claimed in claim 1 is characterized in that said finished product grain size characteristic is must reach more than 600 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101503460A CN102701631A (en) | 2012-05-16 | 2012-05-16 | Internal curing agent of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101503460A CN102701631A (en) | 2012-05-16 | 2012-05-16 | Internal curing agent of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102701631A true CN102701631A (en) | 2012-10-03 |
Family
ID=46894761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101503460A Pending CN102701631A (en) | 2012-05-16 | 2012-05-16 | Internal curing agent of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102701631A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058566A (en) * | 2013-01-15 | 2013-04-24 | 逄鲁锋 | Autogenous curing agent for cement-based material and preparation method thereof |
| CN105481470A (en) * | 2014-09-19 | 2016-04-13 | 新疆建筑科学研究院（有限责任公司） | Additive used in concrete internal curing |
| CN106832130A (en) * | 2016-12-12 | 2017-06-13 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN111825378A (en) * | 2020-06-19 | 2020-10-27 | 河北建材职业技术学院 | Fly ash internal curing material and preparation method thereof |
-
2012
- 2012-05-16 CN CN2012101503460A patent/CN102701631A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058566A (en) * | 2013-01-15 | 2013-04-24 | 逄鲁锋 | Autogenous curing agent for cement-based material and preparation method thereof |
| CN105481470A (en) * | 2014-09-19 | 2016-04-13 | 新疆建筑科学研究院（有限责任公司） | Additive used in concrete internal curing |
| CN106832130A (en) * | 2016-12-12 | 2017-06-13 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN106832130B (en) * | 2016-12-12 | 2019-11-08 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN111825378A (en) * | 2020-06-19 | 2020-10-27 | 河北建材职业技术学院 | Fly ash internal curing material and preparation method thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |