CN109293276A - A kind of thickening water-retaining type additive and its preparation method and application - Google Patents
A kind of thickening water-retaining type additive and its preparation method and application Download PDFInfo
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- CN109293276A CN109293276A CN201811251601.4A CN201811251601A CN109293276A CN 109293276 A CN109293276 A CN 109293276A CN 201811251601 A CN201811251601 A CN 201811251601A CN 109293276 A CN109293276 A CN 109293276A
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- Prior art keywords
- water
- agent
- type additive
- concrete
- retaining type
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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
Abstract
The present invention provides a kind of thickening water-retaining type additive, main component includes water-reducing agent, retarder, air entraining agent, defoaming agent, viscosity thixotropic agent and water-retaining agent, and surplus is water.The present invention also provides the preparation method and application of above-mentioned thickening water-retaining type additive.Thickening water-retaining type additive provided by the invention, it can guarantee the water retention property for also improving concrete while concrete has preferable cohesiveness under the poor raw material such as discontinuous gradation Machine-made Sand, meet various working performance of concrete, concrete strength can be significantly improved, increase concrete density, keeps concrete durability more preferable, furthermore, use thickening water-retaining type additive provided by the invention, pumpability of concrete is improved, reduces stifled pump phenomenon, further saves man power and material.
Description
Technical field
The invention belongs to technical field of concrete additives, and in particular to a kind of thickening water-retaining type additive and its preparation side
Method and application.
Background technique
Sand is the biggish raw material of dosage in high performance concrete as concrete fine aggregate.Due to natural sand stone resource
Shortage, many places can be adopted without sand, replace natural sand stone more bright come the trend for preparing high performance concrete using mechanism sandstone
It is aobvious, however, being easy to cause concrete mixing water since most of mechanism grain fineness number modulus is big, gradation is discontinuous, clay content is high
Amount is big, and poor water retention property, cohesiveness is inadequate, finally declines concrete strength.
When concrete raw material unstable quality, it is ensured that concrete have preferable working performance, mechanical property with it is resistance to
Long performance, addition thickening water-retaining type additive, which just seems, to be even more important.CN105585673A discloses a kind of concrete thickening guarantor
Aqua, the sticking enhancing water-loss reducer with methyl alkene butyl polyoxyethylene polyoxypropylene, unsaturated monocarboxylic acid or/and its derivative, no
Being saturated olefin sulfonic acid or/and its sodium salt part and unsaturated alkenyl organosilicon cross-linking agent is raw material, and aggregated to obtain, the invention is also
The method for preparing above-mentioned concrete sticking enhancing water-loss reducer is provided, the sticking enhancing water-loss reducer which provides is applied to C30 and with junior
When other concrete, thickening Water-saving effect is excellent, and concrete flowability loss is small, however, the sticking enhancing water-loss reducer system that the invention provides
Standby process is cumbersome and needs to heat, and increases manufacturing cost.CN101538351B discloses a kind of polycarboxylic acids salt form concrete and subtracts
The preparation method of aqua sticking enhancing water-loss reducer, it is first with cornstarch, acrylic acid, methacrylic acid, butyl acrylate etc. for raw material
Degradation appropriate first is carried out to starch, then carries out copolymerization acquisition with acrylic acid, methacrylic acid, butyl acrylate again
Polycarboxylic acids salt form concrete high efficiency water reducing agent sticking enhancing water-loss reducer, it is anti-by the degradation and polymerization that control starch during the preparation process
The condition answered reaches the control to product structure performance, however, the Water-saving effect of the invention water-retaining agent is unknown.
To sum up, it in the prior art, since mechanism grain fineness number modulus is big, gradation is discontinuous, clay content is high, is easy to cause
The problem of concrete mixing water consumption is big, poor water retention property, cohesiveness not enough finally declines concrete strength still needs to develop one kind
New thickening water-retaining type additive is wanted with guaranteeing that working performance, intensity and durability during concrete production meet building
It asks.
Summary of the invention
To solve since mechanism grain fineness number modulus is big, gradation is discontinuous, clay content is high, to be easy to cause mixed in the prior art
The problem of solidifying soil mixing water amount is big, poor water retention property, cohesiveness not enough finally declines concrete strength, the purpose of the present invention it
One is to provide a kind of thickening water-retaining type additive.
The second object of the present invention is to provide the preparation method of above-mentioned thickening water-retaining type additive.
The third object of the present invention is to provide the application of above-mentioned thickening water-retaining type additive.
To achieve the above object, the invention adopts the following technical scheme:
A kind of thickening water-retaining type additive, the component comprising following mass percent meter:
Water-reducing agent 25.75~50.25%,
Retarder 10~30%,
Air entraining agent 0.01~0.5%,
Defoaming agent 0.05~0.8%,
Viscosity thixotropic agent 0.4~3.5%,
Water-retaining agent 0.05~2%,
Surplus is water.
Preferably, the water-reducing agent is high performance water reducing agent of polyocarboxy acid.
It is further preferred that the trade mark of the high performance water reducing agent of polyocarboxy acid is ZY-TPC.
It is further preferred that containing admittedly for the high performance water reducing agent of polyocarboxy acid is 35~45%.
Preferably, the retarder is at least one of Portugal's sodium, white sugar and maltodextrin.
Preferably, the air entraining agent is at least one of polyether phosphate and lauryl sodium sulfate.
Preferably, the defoaming agent is that polyethers synthesize defoaming agent.
It is further preferred that the trade mark of the polyethers synthesis defoaming agent is this grease of Suzhou bamboo ZB-XP.
Preferably, the viscosity thixotropic agent is polyurethane.
Preferably, the water-retaining agent is polyvinyl alcohol.
The preparation method of above-mentioned thickening water-retaining type additive, comprising the following steps:
(1) weigh each component according to the ratio, water be first added in container, sequentially add water-reducing agent, retarder, defoaming agent,
It is stirred evenly after viscosity thixotropic agent and water-retaining agent；
(2) air entraining agent is added into mixture obtained by step (1) and stirs evenly to get finished product.
Above-mentioned thickening water-retaining type additive is in the application in the concrete of C60 and following intensity rank.
Beneficial effects of the present invention
1, thickening water-retaining type additive provided by the invention can guarantee under the poor raw material such as discontinuous gradation Machine-made Sand
While concrete has preferable cohesiveness, the water retention property of concrete is improved, meets various working performance of concrete；
2, thickening water-retaining type additive provided by the invention can significantly improve concrete strength, increase concrete density,
Keep concrete durability more preferable；
3, using thickening water-retaining type additive provided by the invention, concrete flowability energy, therefore concrete pump are increased
It send performance to be improved, reduces stifled pump phenomenon, further save man power and material.
Specific embodiment
The following is specific embodiments of the present invention, and further retouches to technical solution of the present invention work in conjunction with the embodiments
It states, however, the present invention is not limited to these examples.
Embodiment 1
Present embodiments provide the preparation method of thickening water-retaining type additive, comprising the following steps:
(1) weigh each component according to the ratio, water be first added in container, sequentially add water-reducing agent, retarder, defoaming agent,
It is stirred evenly after viscosity thixotropic agent and water-retaining agent；
(2) air entraining agent is added into mixture obtained by step (1) and stirs evenly to get finished product.
Embodiment 2
The preparation method provided using embodiment 1, is prepared for the thickening water-retaining type additive of 7 kinds of different ratios, specifically matched
Side is as shown in table 1, wherein and water-reducing agent is the high performance water reducing agent of polyocarboxy acid that the trade mark is ZY-TPC, Gu containing being 40%.Defoaming agent is
Polyethers synthesize defoaming agent, and manufacturer is Suzhou bamboo sheet, and the grease trade mark is ZB-XP.Water-retaining agent is polyvinyl alcohol.Portugal's sodium refers to grape
Sodium saccharate.
7 kinds of thickening water-retaining type additives of 1 different ratio of table
Embodiment 3
Concrete mix is designed according to strength grade of concrete C30, each material utilization amount is shown in Table 2, wherein river sand is not using
Continuous grading Machine-made Sand substitution.
2 C30 concrete mix of table
Thickening water-retaining type additive A~G of 7 kinds of embodiments 2 is respectively applied in above-mentioned concrete, dosage uses glue
The 1.0% of the total dosage volume of material (concrete and coal ash), carries out concrete performance according to the method in the standards such as GB/50152-92
Measurement, measurement result are listed in table 3.
3 concrete performance measurement result of table
By being detected above it is found that thickening water-retaining type additive provided by the invention, can be such that the detection of fresh concrete items refers to
Mark is substantially better than the existing normal concrete additive in market, can significantly solve concrete because mixing caused by various poor raw material
The problem of concrete strength difference after solidifying native machine poor fluidity out, easy performance living are poor, bleeding isolates and molding demoulding, additionally it is possible to gently
Pine nut shows requirement of the poor raw material to working performance of concrete.
Claims (10)
1. a kind of thickening water-retaining type additive, which is characterized in that the component comprising following mass percent meter:
Water-reducing agent 25.75~50.25%,
Retarder 10~30%,
Air entraining agent 0.01~0.5%,
Defoaming agent 0.05~0.8%,
Viscosity thixotropic agent 0.4~3.5%,
Water-retaining agent 0.05~2%,
Surplus is water.
2. thickening water-retaining type additive according to claim 1, which is characterized in that the water-reducing agent is the high property of polycarboxylic acids
It can water-reducing agent.
3. thickening water-retaining type additive according to claim 2, which is characterized in that the high performance water reducing agent of polyocarboxy acid
It is solid containing being 35~45%.
4. thickening water-retaining type additive according to claim 1, which is characterized in that the retarder is gluconic acid
At least one of sodium, white sugar and maltodextrin.
5. thickening water-retaining type additive according to claim 1, which is characterized in that the air entraining agent is polyether phosphate
At least one of with lauryl sodium sulfate.
6. thickening water-retaining type additive according to claim 1, which is characterized in that the defoaming agent is polyethers synthesis
Defoaming agent.
7. thickening water-retaining type additive according to claim 1, which is characterized in that the viscosity thixotropic agent is poly- ammonia
Ester.
8. thickening water-retaining type additive according to claim 1, which is characterized in that the water-retaining agent is polyvinyl alcohol.
9. a kind of preparation method of the thickening water-retaining type additive of any one according to claim 1~8, which is characterized in that packet
Include following steps:
(1) each component is weighed according to the ratio, water is first added in container, sequentially adds water-reducing agent, retarder, defoaming agent, viscosity
It is stirred evenly after thixotropic agent and water-retaining agent；
(2) air entraining agent is added into mixture obtained by step (1) and stirs evenly to get finished product.
10. viscosifying the increasing of water-retaining type additive or the preparation of claim 9 the method as described in claim 1~8 any one
Viscous application of the water-retaining type additive in the concrete of C60 and following intensity rank.
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| CN201811251601.4A CN109293276A (en) | 2018-10-25 | 2018-10-25 | A kind of thickening water-retaining type additive and its preparation method and application |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655346A (en) * | 2019-09-29 | 2020-01-07 | 湖南中岩建材科技有限公司 | Machine-made sand regulator and preparation method thereof |
| CN111087193A (en) * | 2019-12-27 | 2020-05-01 | 杭州斯曼特建材科技有限公司 | Dry-mixed mortar thickening agent and preparation method thereof |
| CN111574104A (en) * | 2020-05-28 | 2020-08-25 | 中交一公局集团有限公司 | Water reducing agent and preparation method and application thereof |
| CN114195421A (en) * | 2020-09-17 | 2022-03-18 | 江苏尼高科技有限公司 | Preparation method of polycarboxylic acid admixture for machine-made sand concrete |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655346A (en) * | 2019-09-29 | 2020-01-07 | 湖南中岩建材科技有限公司 | Machine-made sand regulator and preparation method thereof |
| CN111087193A (en) * | 2019-12-27 | 2020-05-01 | 杭州斯曼特建材科技有限公司 | Dry-mixed mortar thickening agent and preparation method thereof |
| CN111574104A (en) * | 2020-05-28 | 2020-08-25 | 中交一公局集团有限公司 | Water reducing agent and preparation method and application thereof |
| CN114195421A (en) * | 2020-09-17 | 2022-03-18 | 江苏尼高科技有限公司 | Preparation method of polycarboxylic acid admixture for machine-made sand concrete |
| CN114195421B (en) * | 2020-09-17 | 2023-08-29 | 江苏尼高科技有限公司 | Preparation method of polycarboxylic acid additive for machine-made sand concrete |
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Application publication date: 20190201 |