CN110104983A - Application method of the curing agent in concrete in alkaline residue - Google Patents
Application method of the curing agent in concrete in alkaline residue Download PDFInfo
- Publication number
- CN110104983A CN110104983A CN201910304523.8A CN201910304523A CN110104983A CN 110104983 A CN110104983 A CN 110104983A CN 201910304523 A CN201910304523 A CN 201910304523A CN 110104983 A CN110104983 A CN 110104983A
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- China
- Prior art keywords
- alkaline residue
- curing agent
- concrete
- quality
- residue
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- 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.)
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Classifications
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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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/0006—Waste inorganic materials
Abstract
The invention belongs to building material technical fields, and in particular to application method of the curing agent in concrete in a kind of alkaline residue.This method replaces cement using quality such as curing agents in alkaline residue, and the amount ranges of curing agent are the 4%~6% of cementitious material quality in alkaline residue；The water-cement ratio of concrete is in 0.20 to 0.40 range, and the additional water consumption of curing agent increases with water-cement ratio in alkaline residue and linear reduction, range are 0%~40% of curing agent quality in alkaline residue.It adds in alkaline residue after curing agent, the 28d age compression strength of concrete does not reduce, and the self-constriction of 3d age reduces by 20% or more.The present invention provides a kind of methods for efficiently using alkaline residue, the self-constriction of concrete can be effectively reduced, and can reduce the cost of concrete under the premise of guaranteeing concrete strength.
Description
Technical field
The invention belongs to building material technical fields, and in particular to user of the curing agent in concrete in a kind of alkaline residue
Method.
Background technique
Concrete is common construction material, but when its water-cement ratio is lower than 0.42, understands the aquation due to cement and generate
Self-constriction phenomenon, and reduced with water-cement ratio, self-constriction increases.The self-constriction of concrete is also to lead to the important original of concrete cracking
Cause.
It is the effective way for solving the problems, such as this using interior curing agent, but existing research shows that existing organic interior feeding
After protecting agent (such as super absorbent resin) and inorganic interior curing agent (such as haydite) admixture, the same of concrete self-shrinkage is being reduced
When, it will usually different degrees of reduction concrete strength is badly in need of the new interior curing agent for not reducing concrete strength of exploitation.
Alkaline residue is ammonia-soda process soda ash and the waste residue generated.China is currently maximum soda manufacture state in the world, often
The alkaline residue that year generates because producing soda ash is up to 3,000,000 tons, and so a large amount of alkaline residue causes many problem of environmental pollutions.But alkali
Slag chloride ion content is high, and the mass of ion score under absolute dry condition can reach 10%, so that the secondary use of alkaline residue is difficult
It is heavy.Alkaline residue utilization rate in China's only has 3~4% at present, and main processing ways are stockpiling or fill out extra large processing, brings to environment
The problems such as such as " white sea " phenomenon.
Early-stage study finds there is large quantity micropore gap in alkaline residue, and the structure of alkaline residue can carry out water suction and release water, reach
The effect of interior maintenance；Concrete will not be made to generate hole there is a phenomenon where particle atrophy simultaneously, therefore as interior curing agent
It is feasible.
Applicant early period alkaline residue is dechlorinated after, with flyash intergrinding powder, replace slag and powder as interior curing agent
Coal ash is added in concrete.Result of study shows that it can reduce the self-constriction of concrete, but can reduce concrete simultaneously
Working performance and 28d compression strength.Therefore, it is badly in need of developing one kind and is able to maintain concrete 28d compression strength and does not reduce and can be effective
The method for reducing concrete self-shrinkage.
Summary of the invention
The technical problems to be solved by the present invention are: keeping concrete 28d anti-how using alkaline residue as interior curing agent
Compressive Strength do not reduce in the case where, the self-constriction of concrete can be effectively reduced, realization is turned waste into wealth.
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide curing agents in a kind of alkaline residue in concrete
Application method.
To achieve the goals above, The technical solution adopted by the invention is as follows:
Application method of the curing agent in concrete in a kind of alkaline residue replaces cement with quality such as curing agents in alkaline residue, adds
Enter in concrete, the amount ranges of curing agent are the 4%~6% of cementitious material quality in alkaline residue；The water-cement ratio of concrete exists
0.20~0.40, the additional water consumption of curing agent increases with water-cement ratio in alkaline residue and linear reduction, amount ranges are in alkaline residue
The 0%~40% of curing agent quality；
Curing agent is that the waste residue alkaline residue of ammonia-soda process soda ash is successively dechlorinated, breaks up and dried in the alkaline residue,
Interior conserving material obtained by powder is made with fly cutter or mill flour mill again, chloride ion content is lower than 0.30wt%, and partial size is big
It is less than 10wt% in the granule content of 0.080mm.
It is furthermore preferred that the amount ranges of curing agent are the 5% of cementitious material quality in the alkaline residue.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) in the alkaline residue that uses of the present invention curing agent be by alkaline residue successively by dechlorination, break up and dry, then with fly cutter or
Interior conserving material obtained by powder is made in mill, and particle is thinner, and without mixing material is added, interior maintenance effect is good,
There are positive influences to intensity.
(2) it adding in alkaline residue after curing agent as required, the 28d age compression strength of concrete does not reduce, and 3d age
Self-constriction reduces by 20% or more.
(3) cement is the highest cementitious material of price in concrete, replaces cement with alkaline residue, can effectively reduce cost, can
To realize the efficient utilization of curing agent in alkaline residue.
(4) industrial waste alkaline residue can be efficiently used, every cubic meter of concrete can utilize 20 kilograms to 30 kilograms of alkaline residue.With
The concrete amount that annual water-cement ratio is 0.20~0.40 is that 1 billion cubic meter calculates, and can consume alkaline residue 200~3,000,000 ton.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
For not specifically specified technological parameter, routine techniques progress can refer to.
Embodiment 1
The present embodiment provides application method of the curing agent in concrete in a kind of alkaline residue.
Curing agent is prepared using fly cutter flour mill in alkaline residue, chloride ion content 0.20wt%, and partial size is greater than 0.08mm
Granule content be 8wt%.Water-binder ratio 0.20, the quality such as curing agent replace cement in alkaline residue, and curing agent is mixed in alkaline residue
Amount is the 4.0% of cementitious material quality, and additional water flowing rate is 40% of curing agent quality in alkaline residue；By standard GB/T/T
50081-2002 and GB/T 50082-2009 detection, compared to the blank control group that curing agent in alkaline residue is not added, the 28d of concrete
Compression strength, which improves 0.5%, 3d self-constriction, reduces by 31.1%.
Embodiment 2
The present embodiment provides application method of the curing agent in concrete in a kind of alkaline residue.
Curing agent is prepared using mill flour mill in alkaline residue, chloride ion content 0.21wt%, and partial size is greater than 0.08mm
Granule content be 5wt%.Water-binder ratio 0.30, the quality such as curing agent replace cement in alkaline residue, and curing agent is mixed in alkaline residue
Amount is the 5.0% of cementitious material quality, and additional water flowing rate is 20% of curing agent quality in alkaline residue；By standard GB/T/T
50081-2002 and GB/T 50082-2009 detection, compared to the blank control group that curing agent in alkaline residue is not added, the 28d of concrete
Compression strength, which improves 1.2%, 3d self-constriction, reduces by 28.4%.
Embodiment 3
The present embodiment provides application method of the curing agent in concrete in a kind of alkaline residue.
Curing agent is prepared using fly cutter flour mill in alkaline residue, chloride ion content 0.09wt%, and partial size is greater than 0.08mm
Granule content be 8wt%.Water-binder ratio 0.40, the quality such as curing agent replace cement in alkaline residue, and curing agent is mixed in alkaline residue
Amount is the 6.0% of cementitious material quality, is not spiked with additional water flowing rate；By standard GB/T/T 50081-2002 and GB/T 50082-
2009 detections, compared to the blank control group that curing agent in alkaline residue is not added, the 28d compression strength of concrete improves 2.3%, 3d from receipts
Contracting reduces by 38.1%.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination and simplify,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (2)
1. application method of the curing agent in concrete in a kind of alkaline residue, it is characterised in that: taken with quality such as curing agents in alkaline residue
For cement, it is added in concrete, the amount ranges of curing agent are the 4%~6% of cementitious material quality in alkaline residue；The water of concrete
The additional water consumption of glue ratio curing agent in 0.20~0.40, alkaline residue increases with water-cement ratio and linear reduction, amount ranges are
The 0%~40% of curing agent quality in alkaline residue；
Curing agent is that the waste residue alkaline residue of ammonia-soda process soda ash is successively dechlorinated, breaks up and dried, then is used in the alkaline residue
Interior conserving material obtained by powder is made in fly cutter or mill flour mill, and chloride ion content is lower than 0.30wt%, and partial size is greater than
The granule content of 0.080mm is less than 10wt%.
2. application method of the curing agent in concrete in alkaline residue according to claim 1, it is characterised in that: the alkali
The amount ranges of curing agent are the 5% of cementitious material quality in slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304523.8A CN110104983A (en) | 2019-04-16 | 2019-04-16 | Application method of the curing agent in concrete in alkaline residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304523.8A CN110104983A (en) | 2019-04-16 | 2019-04-16 | Application method of the curing agent in concrete in alkaline residue |
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| Publication Number | Publication Date |
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| CN110104983A true CN110104983A (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910304523.8A Pending CN110104983A (en) | 2019-04-16 | 2019-04-16 | Application method of the curing agent in concrete in alkaline residue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111348857A (en) * | 2020-03-26 | 2020-06-30 | 张延年 | Concrete activator and preparation method thereof |
Citations (4)
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|---|---|---|---|---|
| US20060144299A1 (en) * | 2003-07-04 | 2006-07-06 | Kazunori Takada | Method for reducing autogeneous shrinkage of super high strength concrete |
| CN106186769A (en) * | 2016-07-15 | 2016-12-07 | 华南理工大学 | Preparation method and application are dried in a kind of alkaline residue water-retaining agent and revolution thereof |
| CN106167362B (en) * | 2016-07-15 | 2019-01-18 | 华南理工大学 | A kind of alkaline residue water-retaining agent and the preparation method and application thereof |
| CN208727679U (en) * | 2018-07-18 | 2019-04-12 | 广东聚盈化工有限公司 | A kind of efficient blocky paint pulverizer |
-
2019
- 2019-04-16 CN CN201910304523.8A patent/CN110104983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060144299A1 (en) * | 2003-07-04 | 2006-07-06 | Kazunori Takada | Method for reducing autogeneous shrinkage of super high strength concrete |
| CN106186769A (en) * | 2016-07-15 | 2016-12-07 | 华南理工大学 | Preparation method and application are dried in a kind of alkaline residue water-retaining agent and revolution thereof |
| CN106167362B (en) * | 2016-07-15 | 2019-01-18 | 华南理工大学 | A kind of alkaline residue water-retaining agent and the preparation method and application thereof |
| CN208727679U (en) * | 2018-07-18 | 2019-04-12 | 广东聚盈化工有限公司 | A kind of efficient blocky paint pulverizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111348857A (en) * | 2020-03-26 | 2020-06-30 | 张延年 | Concrete activator and preparation method thereof |
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| PB01 | Publication | ||
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Application publication date: 20190809 |