CN101891414A - Polycarboxylic acid type special additive for lightweight aggregate concrete - Google Patents
Polycarboxylic acid type special additive for lightweight aggregate concrete Download PDFInfo
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- CN101891414A CN101891414A CN2010102206161A CN201010220616A CN101891414A CN 101891414 A CN101891414 A CN 101891414A CN 2010102206161 A CN2010102206161 A CN 2010102206161A CN 201010220616 A CN201010220616 A CN 201010220616A CN 101891414 A CN101891414 A CN 101891414A
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
-
- 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
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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
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a polycarboxylic acid type special additive for lightweight aggregate concrete, which is formed by uniformly mixing 40-50 parts by weight of polycarboxylic acid type water reducing agent, 0.5-6 parts by weight of sodium gluconate, 0.1-0.4 part by weight of triterpenoids saponin, 0.05-0.2 part by weight of defoamer BYK-024 and 0.005-0.02 part by weight of cellulose ether with 50-60 parts by weight of water. The adoption of the special additive can lead lightweight aggregate to be difficult to float, avoid causing great impacts on the working performance of concrete, further avoid increasing the loss of slump constant, well control the performances of workability and homogeneity of the concrete, simplify the production process of the lightweight aggregate concrete, improve the production efficiency, simultaneously improve the construction working efficiency and obtain obvious economic benefits and social benefits.
Description
Technical field
The present invention relates to a kind of concrete special additive, particularly a kind of polycarboxylic acid type special additive for lightweight aggregate concrete that is applicable to belongs to building material technical field.
Background technology
Along with the fast development of China's building trade and the acceleration of infrastructure construction, lightweight aggregate concrete is widely used in all kinds of engineerings with its lightweight, high-strength, insulation, heat insulation, antidetonation, functional characteristics such as wear-resisting.
Lightweight aggregate concrete is exactly the concrete that utilizes aglite to make.Aglite divides lightweight coarse aggregate and lightweight fine aggregate.The lightweight coarse aggregate mainly contains natural weight aggregate (as float stone, tuff, perlite etc.), artificial light aggregate (as haydites of book structure, leca etc.), industrial waste light skeletal (as slag, natural gangue, lytag etc.).The lightweight fine aggregate mainly contains light weight sand, swelling perlite powder, natural gangue powder etc.Lightweight aggregate concrete has the characteristics from heavy and light, so the development lightweight aggregate concrete is considered to alleviate dead load, the main path that concrete is developed to lightweight, high-strength direction.
Because the density of light skeletal is little a lot of than sand-cement slurry, proportioning design or Construction control improperly under the situation light skeletal be very easy to float to concrete surface layer.And light skeletal can absorb moisture in construction process from cement slurry, causes the workability of concrete can variation, and slump-loss increases, homogeneity is variation also, cause scope of operation face work efficient reduction in the bridge floor construction process, influence construction speed, cause financial loss.Controlling workability of concrete and homogeneity when therefore, lightweight aggregate concrete is applied to bridge structure and Surfacing Construction well is lightweight aggregate concrete as an engineering difficult problem in the facing concrete construction.
People mainly absorb mixing water by the light skeletal of prewetting to reduce light skeletal in construction at present, and then improve its workability, but this method can there is no tangible improvement for concrete homogeneity and protect plasticity.And find that in the practice of construction process degree of prewetting of light skeletal is difficult to accurately control, bring the concrete strength fluctuation thus.Existing common admixture is mainly at the normal concrete exploitation, and the effect that is applied to lightweight aggregate concrete is also bad.
Lightweight aggregate concrete has a wide range of applications striding gauge structure, Highrise buildings, soft clay ground greatly and shake in the engineerings such as area more with its lightweight, high-strength, multi-functional characteristics.Because lightweight aggregate concrete no matter at composition, structure or aspect of performance, is compared with normal concrete, all is very different.Therefore carry out the concrete each side research of high performance lightweight aggregate, its meaning is very remarkable.
Lightweight aggregate concrete polycarboxylic acid type special additive provided by the invention is to develop at lightweight aggregate concrete specially, under light skeletal is not prewetted situation, realization is to the lightweight aggregate concrete construction of different densities grade, different construction requirements, simplify the production technique of lightweight aggregate concrete, enhance productivity.
Summary of the invention
The object of the present invention is to provide a kind of polycarboxylic acid type special additive that can improve deck paving with lightweight aggregate concrete workability and homogeneity.
In order to realize the problems referred to above, the technical solution adopted in the present invention is:
A kind of polycarboxylic acid type special additive for lightweight aggregate concrete, form by poly carboxylic acid series water reducer, Sunmorl N 60S, three obedient saponin(es, defoamer BYK-024 and ether of cellulose and water uniform mixing, the shared weight part of each raw material is: 40～50 parts of poly carboxylic acid series water reducers, 0.5～6 part of Sunmorl N 60S, 0.1～0.4 part of three obedient saponin(e, 0.05～0.2 part of BYK-024,0.005～0.02 part of ether of cellulose, 50～60 parts in water.
The serve as reasons unsaturated monomer that contains carboxyl and other monomer copolymerizations of described poly carboxylic acid series water reducer form, has comb shaped molecular structure, mainly be to be the multipolymer of carboxyl and polyoxyethylated polymethyl acrylic acid or the multipolymer of polyethers with the side chain, its molecular weight is 30000～50000, and water-reducing rate is 23～28%.
Described Sunmorl N 60S is an industrial glucose acid sodium, and retarding effect is best, guarantees that fresh concrete keeps the slump 1～2h.
Described fiber ether is mainly hydroxypropyl methyl cellulose ether or methyl hydroxyethylcellulose ether, and molecular weight is 50000～100000.
Described defoamer is BYK-024, and BYK-024 is low polysiloxane and a composite product thereof to 16～21Mn/m of surface tension.
This admixture is a main body by poly carboxylic acid series water reducer, and ether of cellulose, air entrapment agent, defoamer and slow setting plasticity-retention agent mix in the water according to a certain percentage, forms stable solution.
The poly carboxylic acid series water reducer main component is that side chain is the multipolymer of carboxyl and polyoxyethylated polymethyl acrylic acid, and its molecular weight is 30000-50000.
The ether of cellulose main component is poly-methyl hydroxypropyl methyl cellulose ether, and molecular weight is 50000-100000.
The main component of air entrapment agent is a triterpenoid saponin, and the bubble that can introduce in the concrete reaches 1,000,000,000 more than, and the bubble of introducing is that discontinuous sealing is spherical, and pore diameter range is 0.02～0.2mm; When air content 〉=5%, bubble spread ratio L＜100 μ m, when air content was 6%, bubble spread ratio L was about 80 μ m.
The main component of defoamer BYK-024 is low polysiloxane and a composite product thereof to 16-21Mn/m of surface tension.
The slow setting plasticity-retention agent mainly adopts Sunmorl N 60S, claims sodium pentahydyoxycaproate, white or faint yellow crystallization shape powder again, and is soluble in water, be slightly soluble in alcohol.Its slow setting is very strong, come from and suppress tricalcium silicate (C
3S) aquation can make concrete keep slump 1-2h under usual conditions behind mix, and the guarantor moulds with retarding effect apparent in view, and volume is between the 0.05%-0.2% of binder total amount usually.
The preparation method of above-mentioned a kind of deck paving lightweight aggregate concrete polycarboxylic acid type special additive, be with all raw material proportionally weighing add together in the entry after good, stirring gets final product, and generally is stirred to starting material and all is melted into settled solution.
Special additive volume scope is generally between the 0.5%-1.0% of gelling material gross weight.
Because the light skeletal of lightweight aggregate concrete has vesicular structure, the reason and the normal concrete of the loss of lightweight aggregate concrete serviceability have than big-difference.The slump of normal concrete through time loss mainly because hydrated cementitious causes that homogeneity generally is to adjust by admixture and water consumption.Lightweight aggregate concrete is then different, light skeletal with vesicular structure is from continuing suction the slurry on every side, be cause the lightweight aggregate concrete slump through the time loss major cause, in addition because light skeletal density is lighter, disturbed visibly moved easy come-up causes the homogeneity of concrete variation.The light porous of light skeletal is to cause the serviceability of lightweight aggregate concrete and the main reason that homogeneity is inferior to normal concrete.
Characteristics of the present invention are: at the characteristics of lightweight aggregate concrete serviceability loss, choose reasonable poly carboxylic acid series water reducer, defoamer BYK-024, three obedient saponin(es, cellulosic fibre, Sunmorl N 60S and water.The above-mentioned raw materials component is carried out compound with optimal components ratio, obtain a kind of lightweight aggregate concrete special additive, apply it in the lightweight aggregate concrete, to improve concrete workability and homogeneity.
More than each material the action effect of lightweight aggregate concrete is seen Table 1.
Table 1 different components is to the action effect of lightweight aggregate concrete
(1) diminishing component: with the polyacrylate is the poly carboxylic acid series water reducer of representative, it is the novel superplasticizer of the third generation in recent years, it can make the workability of the fresh concrete of low water binder ratio keep the certain hour cycle, and does not influence condensing and the hardened chemical admixture of cement system.Poly carboxylic acid series water reducer commonly used mainly contains polycarboxylic acid salt's superplasticizer (PC) and polyether-based superplasticizer (PE) and their graft copolymer etc.It has higher water-reducing effect than traditional diminishing component, and following table 2 is the influences to concrete performance of different manufacturers poly carboxylic acid series water reducer:
Table 2 different manufacturers poly carboxylic acid series water reducer is to the influence of concrete performance
(2) slow setting is protected and to be moulded component: the slow setting plasticity-retention agent generally is to be used for prolonging time of coagulation, makes the fresh concrete long period keep plasticity, and is commonly used organic and inorganic two kinds, organic as citric acid, tartrate, gluconic acid and their salt etc.; Mineral acid such as borax, zinc chloride, phosphoric acid salt and metaphosphate etc.Slow setting model retention effect commonly used is comparatively ideal to be Sunmorl N 60S.Its table 3 is the influence of Sunmorl N 60S to cement setting time.
Table 3. Sunmorl N 60S is to the influence of cement setting time
(3) tackify component: ether of cellulose has higher viscosity, can reduce the bleeding and the laminated segregation of lightweight aggregate concrete, improves concrete workability and homogeneity, its action effect such as following table 4.
Table 4 ether of cellulose is to the influence of fresh concrete workability
Annotate: mixture segregation degree is to adopt the laminated segregation device to estimate homogeneous index, and the segregation degree can be best less than 8.5% o'clock education resistance greater than 5.0%.
(4) froth breaking component: the effect that the existing inhibition foam of defoamer produces, the effect of the foamy of elimination is arranged again, the irregular defoamer that is distributed in fluid surface can suppress to form elastica, produces thereby suppress foamy.Froth breaking mechanism is that initial defoamer is adsorbed on the bubble; Be droplet drawout on face then; More then the droplet film in vacuolar membrane, permeate and replace the original surface active agent component, thereby last because the defoamer surface tension is lower than the vacuolar membrane surface tension to around further expand and make follicular rupture.
Table 5 is the influence data of BYK-024 defoamer to concrete performance.
Table 5BYK-024 defoamer is to the influence of concrete performance
Annotate: the volume of BYK-024 is the percentage ratio of polycarboxylic acid series additive weight
(5) bleed component: three obedient saponin(es are concrete air entrapment agents commonly used, can introduce a large amount of micro-bubbles in concrete, can reduce concrete density, and improve concrete flowability.Air entrapment agent is to the situation that influences such as the following table 6 of concrete performance.
Table 6 three obedient saponin(es are to the influence of fresh concrete workability
Annotate: the percentage ratio that three obedient saponin(e volumes are polycarboxylic acid series additive weight.
The present invention with respect to the beneficial effect of prior art is:
1. adopt this polycarboxylic acid type special additive for lightweight aggregate concrete, light skeletal is not easy come-up, can not cause very big influence to concrete serviceability, and slump-loss is increased.
2. adopt this special additive, concrete workability and homogeneity all can be well controlled.
3. adopt this special additive, simplified the production technique of lightweight aggregate concrete greatly, production efficiency improves, and has also improved construction working efficient simultaneously, has obtained tangible economic benefit and social benefit.
Embodiment
In order to understand the present invention better, below by embodiment the present invention is described in further details, these embodiment only are used for illustrating the present invention, do not limit the scope of the invention.
Embodiment 1
The special-purpose poly carboxylic acid special additive of a kind of lightweight aggregate concrete, by poly carboxylic acid series water reducer 400g, commercially available industrial glucose acid sodium 30g, three obedient saponin(e 1g, froth breaking B component YK-024 1g, hydroxypropyl methyl cellulose ether 0.05g, stir about was prepared from 90 seconds in the input 568g water.Described poly carboxylic acid series water reducer is that side chain is polyoxyethylated polymethyl acid copolymer, and water-reducing rate is more than 20%; The viscosity of described hydroxypropyl methyl cellulose ether is 12000～18000mPs; Described froth breaking B component YK-024 is polysiloxane and the composite product thereof that specific surface area is lower than 16～21Mn/m.
During use, claim earlier 1% of concrete gel material consumption, earlier with concrete medium sand, rubble, cement, mineral admixture mix after 1 minute, again water and admixture are added while stirring, stir more than 2 minutes, promptly get lightweight aggregate concrete, concrete mix and performance see Table 7 and table 8.Table 9 is the lightweight aggregate concrete performances of not mixing the poly carboxylic acid admixture.
Table 7 lightweight aggregate concrete proportioning (unit: kg/m3)
| Cement | Flyash | Haydites of book structure | River sand | Water | Special additive |
| 420 | 60 | 587 | 713 | 151 | 4.8 |
Annotate: water consumption is the total water amount, is dry haydite when mixing system.
Table 8 is mixed with the lightweight aggregate concrete performance of compound additive
Table 9 is not mixed with the lightweight aggregate concrete performance of compound additive
Example 2:
A kind of lightweight aggregate concrete polycarboxylic acid type special additive, by poly carboxylic acid series water reducer 800g, commercially available industrial glucose acid sodium 40g, three obedient saponin(e 2g, froth breaking B component YK-024 1.5g, methyl hydroxyethylcellulose ether 0.1g, stir about was prepared from 90 seconds in the input 1157g water.Described poly carboxylic acid series water reducer is that side chain is polyoxyethylated copolyether, and water-reducing rate is more than 20%; The viscosity of methyl hydroxyethylcellulose ether is 12000～18000mPS; Described froth breaking B component YK-024 is polysiloxane and the composite product thereof that specific surface area is lower than 16～21Mn/m.
During use, should do the test of admixture the optimum mix amount earlier, determine the volume that admixture is fit to.Earlier concrete medium sand, rubble, cement, mineral admixture mix after 1 minute, are added water and admixture more while stirring, restir promptly got lightweight aggregate concrete more than 2 minutes, and concrete mix and performance see Table 10 and table 11.Table 12 is the lightweight aggregate concrete performances of not mixing the poly carboxylic acid admixture.
Table 10 lightweight aggregate concrete proportioning (unit: kg/m3)
| Cement | Flyash | Haydites of book structure | River sand | Water | Special additive |
| 352 | 88 | 618 | 797 | 139 | 3.96 |
Annotate: water consumption is the total water amount, is dry haydite when mixing system.
Table 11 is mixed with the lightweight aggregate concrete performance of compound additive
Table 12 is not mixed with the lightweight aggregate concrete performance of compound additive
From example 1 and example 2 as seen, lightweight aggregate concrete for different densities, strength grade, the special-purpose poly carboxylic acid admixture of lightweight aggregate concrete provided by the invention all increases significantly to the homogeneity and the serviceability of lightweight aggregate concrete, reduce the concrete dry apparent density, to the not influence of mechanical property of concrete self.
The bound value and the interval value of poly carboxylic acid series water reducer of the present invention, Sunmorl N 60S, three obedient saponin(es, BYK-024 and ether of cellulose raw material can both be realized the present invention, in this illustrative example one by one not.
Claims (6)
1. polycarboxylic acid type special additive for lightweight aggregate concrete, it is characterized in that: it is formed by poly carboxylic acid series water reducer, Sunmorl N 60S, three obedient saponin(es, defoamer and ether of cellulose and water uniform mixing, the shared weight part of each raw material is: 40～50 parts of poly carboxylic acid series water reducers, 0.5～6 part of Sunmorl N 60S, 0.1～0.4 part of three obedient saponin(e, 0.05～0.2 part of defoamer, 0.005～0.02 part of ether of cellulose, 50～60 parts in water.
2. a kind of lightweight aggregate concrete poly carboxylic acid special additive according to claim 1, it is characterized in that: the serve as reasons unsaturated monomer that contains carboxyl and other monomer copolymerizations of described poly carboxylic acid series water reducer form, has comb shaped molecular structure, mainly be to be the multipolymer of carboxyl and polyoxyethylated polymethyl acrylic acid or the multipolymer of polyethers with the side chain, its molecular weight is 30000～50000, and water-reducing rate is 23～28%.
3. a kind of lightweight aggregate concrete poly carboxylic acid special additive according to claim 1 is characterized in that: described Sunmorl N 60S is an industrial glucose acid sodium, and retarding effect is best, guarantees that fresh concrete keeps the slump 1～2h.
4. a kind of lightweight aggregate concrete poly carboxylic acid special additive according to claim 1 is characterized in that: described fiber ether is mainly hydroxypropyl methyl cellulose ether or methyl hydroxyethylcellulose ether, and molecular weight is 50000～100000.
5. a kind of lightweight aggregate concrete poly carboxylic acid special additive according to claim 1 is characterized in that: described defoamer is BYK-024, and BYK-024 is low polysiloxane and a composite product thereof to 16～21Mn/m of surface tension.
6. a kind of lightweight aggregate concrete poly carboxylic acid special additive according to claim 1 is characterized in that: special additive volume scope is generally between the 0.5%-1.0% of gelling material gross weight.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014089815A1 (en) * | 2012-12-14 | 2014-06-19 | Dow Global Technologies Llc | Composition of cellulose ether and gluconate salts for use in cement containing skim coats |
| CN104016615A (en) * | 2014-06-13 | 2014-09-03 | 石家庄市长安育才建材有限公司 | Slow release type efficient polycarboxylic acid water reducer and preparation method thereof |
| CN104402299A (en) * | 2014-10-31 | 2015-03-11 | 桂林华越环保科技有限公司 | Concrete pumping agent |
| CN106045376A (en) * | 2016-06-01 | 2016-10-26 | 湖北大学 | Low-air-entrainment steel tube concrete admixture and preparing method thereof |
| CN106431058A (en) * | 2016-06-08 | 2017-02-22 | 黄河科技学院 | Early-strength polycarboxylic acid water reducing agent, preparation method therefor and application of early-strength polycarboxylic acid water reducing agent |
| CN106536445A (en) * | 2014-11-04 | 2017-03-22 | 株式会社Lg化学 | Cement composition additive comprising polycarbonic acid-based copolymer, zinc oxide particles, and gluconate |
| CN108218281A (en) * | 2018-03-02 | 2018-06-29 | 广东乐尔康生物科技股份有限公司 | The method that by-product in being produced using ursin prepares polycarboxylic admixture compounding |
| CN108275941A (en) * | 2018-01-25 | 2018-07-13 | 四川通德商品混凝土有限公司 | Clear-water concrete compound additive and clear-water concrete |
| CN108640560A (en) * | 2018-06-15 | 2018-10-12 | 中建西部建设西南有限公司 | A kind of high water absorbing capacity coarse aggregate concrete additive and its preparation method and application |
| CN108892412A (en) * | 2018-07-24 | 2018-11-27 | 成都建工预筑科技有限公司 | Lightweight aggregate concrete special additive and its preparation process |
| CN116003022A (en) * | 2022-12-07 | 2023-04-25 | 杨峰 | Cement gel film-forming coated sea sand additive, preparation and application thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014089815A1 (en) * | 2012-12-14 | 2014-06-19 | Dow Global Technologies Llc | Composition of cellulose ether and gluconate salts for use in cement containing skim coats |
| CN104016615A (en) * | 2014-06-13 | 2014-09-03 | 石家庄市长安育才建材有限公司 | Slow release type efficient polycarboxylic acid water reducer and preparation method thereof |
| CN104016615B (en) * | 2014-06-13 | 2015-11-11 | 石家庄市长安育才建材有限公司 | Slow release high-efficiency polycarboxylate water-reducer and preparation method thereof |
| CN104402299A (en) * | 2014-10-31 | 2015-03-11 | 桂林华越环保科技有限公司 | Concrete pumping agent |
| US10029946B2 (en) * | 2014-11-04 | 2018-07-24 | Lg Chem, Ltd. | Cement composition additive containing polycarboxylic acid copolymer, zinc oxide particles and gluconate |
| CN106536445A (en) * | 2014-11-04 | 2017-03-22 | 株式会社Lg化学 | Cement composition additive comprising polycarbonic acid-based copolymer, zinc oxide particles, and gluconate |
| CN106045376A (en) * | 2016-06-01 | 2016-10-26 | 湖北大学 | Low-air-entrainment steel tube concrete admixture and preparing method thereof |
| CN106431058A (en) * | 2016-06-08 | 2017-02-22 | 黄河科技学院 | Early-strength polycarboxylic acid water reducing agent, preparation method therefor and application of early-strength polycarboxylic acid water reducing agent |
| CN106431058B (en) * | 2016-06-08 | 2018-11-13 | 黄河科技学院 | A kind of high early strength poly-carboxylic type water-reducing agent and its preparation method and application |
| CN108275941A (en) * | 2018-01-25 | 2018-07-13 | 四川通德商品混凝土有限公司 | Clear-water concrete compound additive and clear-water concrete |
| CN108218281A (en) * | 2018-03-02 | 2018-06-29 | 广东乐尔康生物科技股份有限公司 | The method that by-product in being produced using ursin prepares polycarboxylic admixture compounding |
| CN108640560A (en) * | 2018-06-15 | 2018-10-12 | 中建西部建设西南有限公司 | A kind of high water absorbing capacity coarse aggregate concrete additive and its preparation method and application |
| CN108640560B (en) * | 2018-06-15 | 2021-04-13 | 中建西部建设西南有限公司 | Additive for high-water-absorption coarse aggregate concrete and preparation method and application thereof |
| CN108892412A (en) * | 2018-07-24 | 2018-11-27 | 成都建工预筑科技有限公司 | Lightweight aggregate concrete special additive and its preparation process |
| CN108892412B (en) * | 2018-07-24 | 2021-02-02 | 成都建工预筑科技有限公司 | Admixture special for lightweight aggregate concrete and preparation process thereof |
| CN116003022A (en) * | 2022-12-07 | 2023-04-25 | 杨峰 | Cement gel film-forming coated sea sand additive, preparation and application thereof |
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