CN107162458A - A kind of super-retarder and its application method for extending concrete coagulating time - Google Patents
A kind of super-retarder and its application method for extending concrete coagulating time Download PDFInfo
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- CN107162458A CN107162458A CN201710398105.0A CN201710398105A CN107162458A CN 107162458 A CN107162458 A CN 107162458A CN 201710398105 A CN201710398105 A CN 201710398105A CN 107162458 A CN107162458 A CN 107162458A
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- retarder
- super
- water
- slow setting
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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
-
- 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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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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 super-retarder and its application method for extending concrete coagulating time, it is formed by slow setting component, water reducer component and water compounding, slow setting component accounts for 2.0 4.0wt% of gross weight, and water reducer component accounts for 30 85wt% of gross weight, and surplus is water；The slow setting component produces the one or more in the waste liquid and ATMP, 1-hydroxy ethylidene-1,1-diphosphonic acid, the sodium of ATMP four, 1-hydroxy ethylidene-1,1-diphosphonic acid sodium, 1-hydroxy ethylidene-1,1-diphosphonic acid potassium that are produced during sodium gluconate by sugar refinery and combined, and waste liquid accounts for the ratio of slow setting component for 30 70wt%.The super-retarder of the present invention substantially prolongs the setting time of concrete, flowing degree of net paste of cement gradual loss is obviously reduced after incorporation, slump-loss ratio is not added with being obviously reduced during retarder in the range of the long period, the appearance of temperature peak of hydration is postponed, temperature peak of hydration value is reduced, and intensity also has increase；With additive compatibility it is good, improve the quality stability of concrete product, greatly reduce cost.
Description
Technical field
The present invention relates to a kind of super-retarder and its application method for extending concrete coagulating time, belong to concrete
Preparation field.
Background technology
Retarder is a kind of conventional concrete admixture, and the condensation of cement can be delayed to harden, and postpones temperature peak of hydration and goes out
The existing time, temperature peak of hydration value is reduced, prevents mass concrete from thermal cracking occur；Further by adjusting high efficiency water reducing agent
With the adaptability of cement, concrete mix slump-loss is reduced, the fresh concrete long period is kept plasticity, in favor of
The transport of concrete, pour and vibrate, improve efficiency of construction.Therefore, retarder is largely used in mass concrete, pumping
Construction and some special construction technologies under concrete, hot climate.At present, conventional retarder be broadly divided into organic and
Inorganic.Organic mainly include hydroxycarboxylic acid and its salt, carbohydrate and carbohydrate, lignosulfonates, polyalcohol and its
Derivative etc.；Inorganic mainly includes phosphate, borax etc., but uses the setting time of these retarder concrete general only
At more than ten hour, and the compatibility of these retarder and other additives was bad, be difficult to ensure that uniform mixing；In addition, slow
Solidifying agent cost is higher, improves production cost.
The content of the invention
In view of the above-mentioned problems of the prior art, when can extend concrete coagulation it is an object of the invention to provide one kind
Between, reduce concrete mix slump-loss, with additive compatibility it is good, lifting concrete product quality stability, can
To substantially reduce the concrete ultra-retarding agent and its application method of cost.
To achieve the above object, the technical solution adopted by the present invention is：It is a kind of to extend the super slow of concrete coagulating time
Solidifying agent, it is formed by slow setting component, water reducer component and water compounding, and slow setting component accounts for the 2.0-4.0wt% of gross weight, water reducer group
Divide the 30-85wt% for accounting for gross weight, surplus is water；The slow setting component produces the waste liquid produced during sodium gluconate by sugar refinery
With ATMP, 1-hydroxy ethylidene-1,1-diphosphonic acid, the sodium of ATMP four, 1-hydroxy ethylidene-1,1-diphosphonic acid sodium, hydroxy ethylidene
One or more in di 2 ethylhexyl phosphonic acid potassium are combined, and waste liquid accounts for the ratio of slow setting component for 30-70wt%；The water reducer group
It is divided into aliphatic water reducing agent or polycarboxylate water-reducer.
It is preferred that, the ratio that the waste liquid accounts for slow setting component is 30-50wt%.
It is preferred that, the gluconic acid sodium content in the waste liquid is more than or equal to 35wt%, and solid content is more than or equal to 50wt%.
Present invention also offers a kind of application method for the super-retarder for extending concrete coagulating time, including following step
Suddenly：
Step one：Sugar refinery is produced to the waste liquid and ATMP, hydroxy ethylidene produced during sodium gluconate
One or more mixing in di 2 ethylhexyl phosphonic acid, the sodium of ATMP four, 1-hydroxy ethylidene-1,1-diphosphonic acid sodium, 1-hydroxy ethylidene-1,1-diphosphonic acid potassium
Into slow setting component, the ratio that waste liquid accounts for slow setting component is 30-70wt%；
Step 2：The slow setting component of step one is mixed into compounding with water reducer, water and forms super-retarder, slow setting component accounts for super
The 2.0-4.0wt% of retarder gross weight, water reducer accounts for the 30-85wt% of super-retarder gross weight, and surplus is water；
Step 3：The super-retarder of step 2 is added in concrete, volume is 1.5-2.0wt%, is uniformly mixed.
In such scheme, water reducer is polycarboxylate water-reducer.
In such scheme, it is preferred that slow setting component accounts for the 4.0wt% of super-retarder gross weight, polycarboxylic acids in the step 2
Water reducer component accounts for the 30wt% of super-retarder gross weight.
Compared with prior art, the present invention has the advantage that：
(1) super-retarder of the invention substantially prolongs the setting time of concrete, postpone the appearance of temperature peak of hydration, drop
Low temperature peak of hydration value；Flowing degree of net paste of cement gradual loss is obviously reduced after incorporation, after extended periods slump-loss ratio
It is not added with being obviously reduced during retarder, and concrete strength also has increase.When the ratio that waste liquid accounts for slow setting component is 30wt%-
50wt%, when during with water reducer compounding use to flowing degree of net paste of cement gradual loss, concrete slump gradual loss, condensation
Between and intensity action effect than waste liquid account for slow setting component ratio be 70wt% when effect it is more preferable.Particularly and polycarboxylic acids
(slow setting component volume 4.0wt%) setting time can reach 72 hours during water reducer compounding use.
(2) compatibility of super-retarder and water reducer of the present invention is good, and solution is uniform, show with additive compatibility it is good,
Improve the quality stability of concrete product.
(3) present invention makees raw material using the waste liquid produced during sugar refinery production sodium gluconate, greatly reduces cost,
Transport, it is easy to use, without Manual material feeding, can be achieved automation deliver waste liquid, saved labour, reduction labor intensity, carry
High production efficiency, improves the competitiveness of product in market.
Embodiment
The present invention is described in further detail with reference to embodiment.
The slow setting component of different ratio is designed first, and is mixed with water reducer, water and be re-dubbed super-retarder sample.Water reducer
Aliphatic high-efficiency water reducing agent, the polycarboxylate water-reducer produced using Xuzhou Zhu Jian building materials Science and Technology Ltd.；Glucose in waste liquid
Sour sodium content is 35wt%, and solid content is 50wt%.Specifically proportioning is as shown in table 1 for super-retarder sample：
Table 1
Observe each super-retarder solution example being configured to, waste liquid account for respectively the ratio of slow setting component for 30wt%,
When 50wt%, 70wt%, aliphatic and polycarboxylate water-reducer are compounded by 0,2.0wt% and 4.0wt% volume respectively, it is all visible
Sample solution is uniform, not stratified, illustrates that retarder is good with water reducer compatibility.
Each super-retarder sample is added into concrete respectively, passes through its shadow to concrete of specific data characterization
Ring.
(1) influence of the super-retarder incorporation to flowing degree of net paste of cement and gradual loss is as shown in table 2：
Table 2
Add after super-retarder, the flowing degree of net paste of cement gradual loss of 60 minutes and 120 minutes is obviously reduced, and waste liquid
Holding effect when accounting for the ratio of slow setting component for 30wt% and 50wt% than 70wt% is good.
(2) influence of the super-retarder incorporation to concrete slump loss is as shown in table 3：
Table 3
It is visible in table, add the concrete slump-loss ratio of 120 minutes and 180 minutes after super-retarder and be not added with retarder
When be obviously reduced, and when waste liquid accounts for the ratio of slow setting component for 30wt% or 50wt% and is used with polycarboxylic acids water reducing agent compositional
When (slow setting component accounts for the 4.0wt% of super-retarder), i.e., when concrete test numbering is S-12, S-13, the slump is damaged within 180 minutes
Lose very small.
(3) influence of the super-retarder incorporation to concrete coagulating time is as shown in table 4：
Table 4
As seen from Table 4, the setting time for adding concrete after super-retarder is obviously prolonged than blank sample, when waste liquid accounts for slow setting
The ratio of component is 30wt% or 50wt% and compounds volume in 4.0wt% with aliphatic water reducing agent, i.e., concrete test is compiled
Number be S-5, S-6 when, final setting time can reach more than 53 hours；When waste liquid account for the ratio of slow setting component for 30wt% or
50wt% and with polycarboxylic acids water reducing agent compositional volume in 4.0wt%, i.e. concrete test numbering final set when being S-12, S-13
Time can reach 72 hours, and when the ratio that waste liquid accounts for slow setting component is 70wt%, final setting time can be shorter, is 69 small
When.
(4) influence of the super-retarder incorporation to concrete strength (C30) is as shown in table 5：
Table 5
As seen from Table 5, the concrete sample 7 days and 28 days concrete crushing strengths added after super-retarder compares blank sample
All it is significantly improved.
Claims (6)
1. a kind of super-retarder for extending concrete coagulating time, it is characterised in that its by slow setting component, water reducer component and
Water compounding is formed, and slow setting component accounts for the 2.0-4.0wt% of gross weight, and water reducer component accounts for the 30-85wt% of gross weight, and surplus is water；
The slow setting component produces the waste liquid and ATMP, 1-hydroxy ethylene-1,1-diphosphonic that are produced during sodium gluconate by sugar refinery
One or more combinations in acid, the sodium of ATMP four, 1-hydroxy ethylidene-1,1-diphosphonic acid sodium, 1-hydroxy ethylidene-1,1-diphosphonic acid potassium and
Into, and waste liquid accounts for the ratio of slow setting component for 30-70wt%；The water reducer component is aliphatic water reducing agent or polycarboxylic acids diminishing
Agent.
2. a kind of super-retarder for extending concrete coagulating time according to claim 1, it is characterised in that described useless
The ratio that liquid accounts for slow setting component is 30-50wt%.
3. a kind of super-retarder for extending concrete coagulating time according to claim 1, it is characterised in that described useless
Gluconic acid sodium content in liquid is more than or equal to 35wt%, and solid content is more than or equal to 50wt%.
4. a kind of application method for the super-retarder for extending concrete coagulating time, it is characterised in that comprise the following steps：
Step one：Sugar refinery is produced to the waste liquid and ATMP, 1-hydroxy ethylene-1,1-diphosphonic produced during sodium gluconate
One or more in acid, the sodium of ATMP four, 1-hydroxy ethylidene-1,1-diphosphonic acid sodium, 1-hydroxy ethylidene-1,1-diphosphonic acid potassium are mixed into slow
Solidifying component, the ratio that waste liquid accounts for slow setting component is 30-70wt%；
Step 2：The slow setting component of step one is mixed into compounding with water reducer, water and forms super-retarder, slow setting component accounts for extra retarded set
The 2.0-4.0wt% of agent gross weight, water reducer accounts for the 30-85wt% of super-retarder gross weight, and surplus is water；
Step 3：The super-retarder of step 2 is added in concrete, volume is 1.5-2.0wt%, is uniformly mixed.
5. a kind of application method of super-retarder for extending concrete coagulating time according to claim 4, its feature
It is, water reducer is polycarboxylate water-reducer.
6. a kind of application method of super-retarder for extending concrete coagulating time according to claim 5, its feature
It is, slow setting component accounts for the 4.0wt% of super-retarder gross weight in the step 2, and it is total that polycarboxylate water-reducer component accounts for super-retarder
The 30wt% of weight.
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| CN201710398105.0A CN107162458B (en) | 2017-05-31 | 2017-05-31 | A kind of super-retarder extending concrete coagulating time and its application method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424026A (en) * | 2018-05-10 | 2018-08-21 | 宁夏新华轩高新技术有限公司 | A kind of polycarboxylic acids pumping admixture and preparation method thereof |
| CN108585612A (en) * | 2018-05-18 | 2018-09-28 | 萧县沃德化工科技有限公司 | A kind of wet mixing mortar additive and its application |
| CN108821626A (en) * | 2018-09-20 | 2018-11-16 | 佛山市蓝瑞欧特信息服务有限公司 | The cement of slow setting is carried out by additive |
| CN109336452A (en) * | 2018-11-20 | 2019-02-15 | 福建建工建材科技开发有限公司 | A kind of surface retarders for concrete prefabricated element |
| CN111960718A (en) * | 2020-07-22 | 2020-11-20 | 浙江五龙新材股份有限公司 | Super-retarding efficient pumping aid and application thereof |
| CN112500023A (en) * | 2020-11-30 | 2021-03-16 | 亚泰集团长春建材有限公司 | Retarding concrete admixture and preparation method thereof |
| CN112521041A (en) * | 2020-12-07 | 2021-03-19 | 广东红墙新材料股份有限公司 | Small-molecule concrete retarder and preparation method thereof |
| CN113121149A (en) * | 2021-03-01 | 2021-07-16 | 交通运输部公路科学研究所 | Cement-based hydration heat inhibitor and preparation method of cement hydration heat inhibiting concrete |
| CN113511864A (en) * | 2021-07-12 | 2021-10-19 | 泉州三方建材有限公司 | Concrete |
| CN114163160A (en) * | 2021-11-24 | 2022-03-11 | 广东浪淘砂新型材料有限公司 | Activity retention agent for waste car washing slurry of mixing plant, and preparation method and application thereof |
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| JP2012036028A (en) * | 2010-08-04 | 2012-02-23 | Denki Kagaku Kogyo Kk | Spraying material and spraying method using the same |
| CN102206057A (en) * | 2011-03-26 | 2011-10-05 | 大连理工大学 | Concrete super retarder and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424026A (en) * | 2018-05-10 | 2018-08-21 | 宁夏新华轩高新技术有限公司 | A kind of polycarboxylic acids pumping admixture and preparation method thereof |
| CN108424026B (en) * | 2018-05-10 | 2020-11-06 | 宁夏新华轩高新技术有限公司 | Polycarboxylic acid pumping agent and preparation method thereof |
| CN108585612A (en) * | 2018-05-18 | 2018-09-28 | 萧县沃德化工科技有限公司 | A kind of wet mixing mortar additive and its application |
| CN108821626A (en) * | 2018-09-20 | 2018-11-16 | 佛山市蓝瑞欧特信息服务有限公司 | The cement of slow setting is carried out by additive |
| CN109336452A (en) * | 2018-11-20 | 2019-02-15 | 福建建工建材科技开发有限公司 | A kind of surface retarders for concrete prefabricated element |
| CN111960718A (en) * | 2020-07-22 | 2020-11-20 | 浙江五龙新材股份有限公司 | Super-retarding efficient pumping aid and application thereof |
| CN112500023A (en) * | 2020-11-30 | 2021-03-16 | 亚泰集团长春建材有限公司 | Retarding concrete admixture and preparation method thereof |
| CN112521041A (en) * | 2020-12-07 | 2021-03-19 | 广东红墙新材料股份有限公司 | Small-molecule concrete retarder and preparation method thereof |
| CN113121149A (en) * | 2021-03-01 | 2021-07-16 | 交通运输部公路科学研究所 | Cement-based hydration heat inhibitor and preparation method of cement hydration heat inhibiting concrete |
| CN113121149B (en) * | 2021-03-01 | 2022-09-16 | 交通运输部公路科学研究所 | Cement-based hydration heat inhibitor and preparation method of cement hydration heat-inhibited concrete |
| CN113511864A (en) * | 2021-07-12 | 2021-10-19 | 泉州三方建材有限公司 | Concrete |
| CN114163160A (en) * | 2021-11-24 | 2022-03-11 | 广东浪淘砂新型材料有限公司 | Activity retention agent for waste car washing slurry of mixing plant, and preparation method and application thereof |
| CN114163160B (en) * | 2021-11-24 | 2022-12-16 | 广东浪淘砂新型材料有限公司 | Activity retention agent for waste car washing slurry of mixing plant, and preparation method and application thereof |
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Effective date of registration: 20210423 Address after: 221000 Dahuang mountain village, Dahuang mountain, Xuzhou economic and Technological Development Zone, Jiangsu Province, No. 16 Patentee after: XUZHOU NATIONAL ECONOMIC DEVELOPMENT ZONE CHENGYI COMMERCIAL CONCRETE Co.,Ltd. Address before: 221000 17 Dahuangshan village, Dahuangshan Town, Gulou economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee before: XUZHOU ZHUJIAN BUILDING MATERIALS TECHNOLOGY Co.,Ltd. |
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