CN108203256A - A kind of flocculant for high intensity non-dispersible underwater concrete - Google Patents
A kind of flocculant for high intensity non-dispersible underwater concrete Download PDFInfo
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- CN108203256A CN108203256A CN201611185396.7A CN201611185396A CN108203256A CN 108203256 A CN108203256 A CN 108203256A CN 201611185396 A CN201611185396 A CN 201611185396A CN 108203256 A CN108203256 A CN 108203256A
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- Prior art keywords
- weight
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- flocculant
- concrete
- high intensity
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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
- 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
- C04B28/06—Aluminous cements
-
- 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
- C04B40/0042—Powdery mixtures
-
- 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
- C04B2111/74—Underwater applications
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses a kind of flocculant for high intensity non-dispersible underwater concrete, this flocculant component is mixed according to corresponding proportion first, then adds to the product that the civil construction particularly suitable for carrying out under water is prepared in concrete again.For compared with the prior art, provided by the present invention for the flocculant of high intensity non-dispersible underwater concrete, being used for concrete formulation chance, water is not isolated, is not disperseed under water, setting time is short, has superior durability energy while the intensity for ensureing concrete structure.The intensity of concrete is high, and underwater molding test block pressure resistance intensity is big, and the preparation process of material is simple, at low cost.
Description
Technical field
The invention belongs to civil construction field of material technology, and in particular to one kind is used for high intensity non-dispersible underwater concrete
Flocculant.
Background technology
Normal concrete is mainly made of cement, water, sand, stone and additive, and non-dispersible underwater concrete is most heavy
What is wanted is to be added to an additive --- underwater anti-washout agent, i.e. flocculant.Do not disperse under water in order to which preparation performance is good
Concrete reasonably selects its each component material needs.
The developed countries such as America and Europe formulate regulation and standard in relation to non-dispersible underwater concrete not yet at present, and Germany,
The states such as Japan also only have the not test method of dispersant and non-dispersible underwater concrete.
For the reliable non-dispersible underwater concrete of preparation performance good quality, its every characteristic of the considerations of comprehensive is needed,
When carrying out mix-design, it is necessary to the rational performance requirements for meeting non-dispersible underwater concrete.Do not disperse to mix under water
The underwater dispersion resistance for coagulating soil can have a great impact to its construction quality with mobile performance.
Flocculant is also referred to as not dispersant or anti-dispersant, and referring in incorporation fresh concrete makes concrete pour in water
Cheng Zhong has and inhibits cement loss and aggregate segregation characteristic, non-dispersible underwater concrete is made to have the special additional of superperformance
Agent.The essence of flocculant mixed problem is the diffusion problem of coagulant hydrolysate in water.Make water-borne glue body particle while take off
Stable yields life cohesion is the prerequisite of the flocculating effect obtained.
Invention content
In order to preferably achieve the purpose that dispersion resistance, land and water intensity ratio and Self-leveling, this is also not disperse to mix under water
The mostly important performance of solidifying soil.The present invention proposes a kind of flocculant for high intensity non-dispersible underwater concrete, flocculant
Component includes：
(1) by following weight ratio, each raw material is weighed
20~50 parts by weight of polydimethyl diallyl ammonium chloride solution；
0~0.05 parts by weight of lauryl sodium sulfate,
4~8 parts by weight of hydrated lime in powder；
Cationic etherifying agent, hydroxyethyl cellulose, 0~0.1 parts by weight of hydroxypropyl methyl cellulose；
0~0.05 parts by weight of hydroxyethyl cellulose；
(2) mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 100 μm；
For above-mentioned technical proposal, in the case of preferred, the application method of above-mentioned flocculant：
500~600 parts by weight of sand；
500~600 parts by weight of cement；
6~15 parts by weight of Concrete superplastizer；
20~50 parts by weight of active mineral admixture,
5~10 parts by weight of CA50 aluminate cements；
SILICA FUME, ferrosilicon, 30~40 parts by weight of silicon carbide micro-powder, silicon carbide sand activated carbon or ground blast furnace slag；
Flocculant addition content is：2~3 parts by weight；
For above-mentioned technical proposal, in the case of preferred, cationic etherifying agent, hydroxyethyl cellulose, hydroxypropyl methyl are fine
The molecular weight of dimension element is more than 10Da.
For above-mentioned technical proposal, in the case of preferred, the active mineral admixture refers to metakaolin or SILICA FUME
Silicon ash.
For above-mentioned technical proposal, in the case of preferred, the Concrete superplastizer is selected from sulfonated melamine first
Aldehyde condensate (SMF), sulphonated naphtalene formaldehyde condensation product (SNF), modified lignosulfonates (MLS) or high-efficiency water-reducing agent of poly-carboxylic acid
(PCA)。
Using DLT 5117-2000《Non-dispersible underwater concrete testing regulations》It is detected；
For above-mentioned technical proposal, in the case of preferred, the flocculant volume is 2.5 parts by weight；
For above-mentioned technical proposal, in the case of preferred, the high-performance water reducing agent, volume is 7 parts, and water-reducing rate is more than
25%.
For compared with the prior art, concrete formulation provided by the invention is applied particularly suitable for the civil engineering carried out under water
Work, water is not isolated, is not disperseed under water chance, setting time is short, it is superior resistance to have while the intensity for ensureing concrete structure
Long performance.The underwater intensity for not disperseing high performance concrete of the present invention is high, and the underwater test block pressure resistance intensity that is molded is big, the system of material
It is standby simple for process, at low cost.
Specific embodiment
Following non-limiting examples can make those of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.Any one skilled in the art in the technical scope of present disclosure, according to
Technical scheme of the present invention and its inventive concept carry out equivalent substitution or change and belong to protection category of the present invention.
Embodiment 1
Its flocculant component includes：
(1) by following weight ratio, each raw material is weighed
20 parts by weight of polydimethyl diallyl ammonium chloride solution；
0.05 parts by weight of lauryl sodium sulfate,
8 parts by weight of hydrated lime in powder；
Cationic etherifying agent, 0.05 parts by weight；Molecular weight is more than 10Da.
0.05 parts by weight of hydroxyethyl cellulose；
(2) mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 100 μm；
The application method of above-mentioned flocculant：
600 parts by weight of sand；
500 parts by weight of cement；
15 parts by weight of Concrete superplastizer sulfonated melamine compound condensation product (SMF)；
50 parts by weight of active mineral admixture metakaolin,
5 parts by weight of CA50 aluminate cements；
30 parts by weight of SILICA FUME；
Flocculant addition content is：2 parts by weight；
Using DLT 5117-2000《Non-dispersible underwater concrete testing regulations》It is detected；
Dispersion resistance energy：7 days land and water intensity ratios are in 70%, 28 day land and water intensity ratio 80.
It is slump-retaining：Non-dispersible underwater concrete is quiet to stop 1 hour, the basic free of losses of the slump.
Concrete workability is excellent, no isolation, excreting water phenomenon
Freezing-thawing resistance and resisting carbonization are substantially better than normal concrete；
Embodiment 2
Its flocculant component includes：
(1) by following weight ratio, each raw material is weighed
20 parts by weight of polydimethyl diallyl ammonium chloride solution；
0.05 parts by weight of lauryl sodium sulfate,
8 parts by weight of hydrated lime in powder；
0.1 parts by weight of hydroxyethyl cellulose；Molecular weight is more than 10Da.
(2) mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 100 μm；
The application method of above-mentioned flocculant：
500 parts by weight of sand；
500 parts by weight of cement；
15 parts by weight of Concrete superplastizer modified lignosulfonates (MLS)；
20 parts by weight of active mineral admixture SILICA FUME silicon ash,
5 parts by weight of CA50 aluminate cements；
40 parts by weight of ferrosilicon and silicon carbide micro-powder；
Flocculant addition content is：2 parts by weight；
Using DLT 5117-2000《Non-dispersible underwater concrete testing regulations》It is detected；
Dispersion resistance energy：7 days land and water intensity ratios are in 70%, 28 day land and water intensity ratio 80.
It is slump-retaining：Non-dispersible underwater concrete is quiet to stop 1 hour, the basic free of losses of the slump.
Concrete workability is excellent, no isolation, excreting water phenomenon.
Freezing-thawing resistance and resisting carbonization are substantially better than normal concrete；
Embodiment 3
Its flocculant component includes：
(1) by following weight ratio, each raw material is weighed
25 parts by weight of polydimethyl diallyl ammonium chloride solution；
0.05 parts by weight of lauryl sodium sulfate,
5 parts by weight of hydrated lime in powder；
0.1 parts by weight of hydroxypropyl methyl cellulose；
(2) mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 100 μm；
The application method of above-mentioned flocculant：
600 parts by weight of sand；
500 parts by weight of cement；
6 parts by weight of Concrete superplastizer high-efficiency water-reducing agent of poly-carboxylic acid (PCA)；
25 parts by weight of active mineral admixture SILICA FUME silicon ash,
10 parts by weight of CA50 aluminate cements；
30~40 parts by weight of ground blast furnace slag；
Flocculant addition content is：3 parts by weight；
Using DLT 5117-2000《Non-dispersible underwater concrete testing regulations》It is detected；
Dispersion resistance energy：7 days land and water intensity ratios are in 70%, 28 day land and water intensity ratio 80.
It is slump-retaining：Non-dispersible underwater concrete is quiet to stop 1 hour, the basic free of losses of the slump.
Concrete workability is excellent, no isolation, excreting water phenomenon
Freezing-thawing resistance and resisting carbonization are substantially better than normal concrete.
Claims (7)
1. a kind of flocculant for high intensity non-dispersible underwater concrete, it is characterised in that：The component of the flocculant includes：
(1) by following weight ratio, each raw material is weighed
20~50 parts by weight of polydimethyl diallyl ammonium chloride solution；
0~0.05 parts by weight of lauryl sodium sulfate,
4~8 parts by weight of hydrated lime in powder；
Cationic etherifying agent, hydroxyethyl cellulose, 0~0.1 parts by weight of hydroxypropyl methyl cellulose；
0~0.05 parts by weight of hydroxyethyl cellulose；
(2) mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 100 μm.
2. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：The wadding
The application method of solidifying agent：
500~600 parts by weight of sand；
500~600 parts by weight of cement；
6~15 parts by weight of Concrete superplastizer；
20~50 parts by weight of active mineral admixture,
5~10 parts by weight of CA50 aluminate cements；
SILICA FUME, ferrosilicon, 30~40 parts by weight of silicon carbide micro-powder, silicon carbide sand activated carbon or ground blast furnace slag；
Flocculant addition content is：2~3 parts by weight.
3. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：Described
Cationic etherifying agent, hydroxyethyl cellulose, hydroxypropyl methyl cellulose molecular weight be more than 10Da.
4. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：Described
Concrete superplastizer is selected from sulfonated melamine compound condensation product (SMF), sulphonated naphtalene formaldehyde condensation product (SNF), and modification is wooden
Sulfonate (MLS) or high-efficiency water-reducing agent of poly-carboxylic acid (PCA).
5. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：The wadding
Solidifying agent volume is 2.5 parts by weight.
6. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：The work
Property mineral admixture refers to metakaolin or SILICA FUME silicon ash.
7. the flocculant according to claim 1 for high intensity non-dispersible underwater concrete, it is characterised in that：The height
Performance water-reducing agent, volume are 7 parts, and water-reducing rate is more than 25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185396.7A CN108203256A (en) | 2016-12-20 | 2016-12-20 | A kind of flocculant for high intensity non-dispersible underwater concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185396.7A CN108203256A (en) | 2016-12-20 | 2016-12-20 | A kind of flocculant for high intensity non-dispersible underwater concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108203256A true CN108203256A (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611185396.7A Pending CN108203256A (en) | 2016-12-20 | 2016-12-20 | A kind of flocculant for high intensity non-dispersible underwater concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759652A (en) * | 2019-11-27 | 2020-02-07 | 衡阳县海华水泥有限责任公司 | High-strength cement for underwater operation |
| CN112939528A (en) * | 2021-01-23 | 2021-06-11 | 广州市鸿磊混凝土有限公司 | Underwater low-bleeding concrete and preparation method thereof |
-
2016
- 2016-12-20 CN CN201611185396.7A patent/CN108203256A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759652A (en) * | 2019-11-27 | 2020-02-07 | 衡阳县海华水泥有限责任公司 | High-strength cement for underwater operation |
| CN112939528A (en) * | 2021-01-23 | 2021-06-11 | 广州市鸿磊混凝土有限公司 | Underwater low-bleeding concrete and preparation method thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180626 |