CN103524103A - Cement-based concrete interface agent - Google Patents
Cement-based concrete interface agent Download PDFInfo
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- CN103524103A CN103524103A CN201310463214.8A CN201310463214A CN103524103A CN 103524103 A CN103524103 A CN 103524103A CN 201310463214 A CN201310463214 A CN 201310463214A CN 103524103 A CN103524103 A CN 103524103A
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- cement
- agent
- concrete interface
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- interface agent
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Abstract
The invention provides a cement-based concrete interface agent having the advantages of fine particles, good fluidity and strong adherence force and capable of filling a concrete interface surface and interface apertures. The cement-based concrete interface agent comprises 50-68wt% of Ba-bearing sulphoaluminate cement, 30-48wt% of water, 1-3wt% of a conditioning agent sodium borate and 1-3wt% of an adhesive; the Ba-bearing sulphoaluminate cement contains 55-75wt% of anhydrous Ba-bearing calcium sulphoaluminate 1.75CaO.1.25BaO.3Al2O3.CaSO4, 8-37wt% of dicalcium silicate 2CaO.SiO2, 3-10wt% of an iron phase 2CaO.Fe2O3-6CaO.2Al2O3.Fe2O3 and 5-8wt% of gypsum, and the adhesive comprises 5-20% of silicon powder, 10-30% of fly ash, 5-20% of slag powder, 10-15% of an epoxy resin, 9-15% of a low-alkali expanding agent and 2-8% of hydroxypropyl methylcellulose ether.
Description
Technical field
The present invention relates to a kind of cement-base concrete interface agent, belong to building material technical field.
Background technology
Cement-base concrete interface agent is applied more extensive in construction work, for realizing the combination of differing materials, has played certain effect.When fresh concrete is poured into a mould on old concrete, concrete interface processing and adhesive property are the key factors that determines repairing quality.The interfacial agents that is painted on the old concrete surface of handling well can strengthen the adhesive property of new-to-old concrete interface, and it changes the adhesive model of New-old concrete from microcosmic, improves cohesive strength.
Summary of the invention
The object of the invention is to provide that a kind of particle is thin, good fluidity, adherence force are strong, fully the cement-base concrete interface agent of fill concrete interface surface and interface hole.
To achieve these goals, the present invention is achieved by the following measures:
, its component and content are:
Titanate-containing sulpho-aluminate cement: 50 ~ 68%
Water: 30 ~ 48%
Conditioning agent Sodium Tetraborate: 1 ~ 3%
Tackiness agent: 1 ~ 3%;
The composition of described titanate-containing sulpho-aluminate cement and content are:
Anhydrous baric calcium sulphoaluminate 1.75CaO1.25BaO3Al
2o
3caSO
4: 55 ~ 75%
Dicalcium Phosphate (Feed Grade) 2CaOSiO
2: 8 ~ 37%
Iron phase 2CaOFe
2o
3-6CaO2Al
2o
3fe
2o
3: 3 ~ 10%
Gypsum 5 ~ 8%
Described percentage ratio is weight percentage;
The composition of tackiness agent and content are: silica flour 5%～20%, flyash 10%～30%, slag powders 5%～20%, epoxy resin 10%～15%, low alkali expanding admixture 9%～15%, hydroxypropyl methyl cellulose ether 2%～8%.
Principal reaction equation of the present invention is as follows:
1.75CaO·1.25BaO·3Al
2O
3·CaSO
4+2(CaSO
4·2H
2O)+34H2O=1.75CaO·1.25BaO·Al
2O
3·3CaSO
4·32?H
2O?+2（Al
2O
3·3H2O）（gel）
Beneficial effect of the present invention:
1. it is a kind of hydraulic cementing materials, has intensity high, and particle is thin, good fluidity, the advantages such as hydrated product densification and microdilatancy.
2. can abundant fill concrete interface surface and interface hole.
3. adherence force is strong, and construction technology is simple, uses manpower and material resources sparingly.
4. free from environmental pollution, to the person without injury.
5. be applicable to New-old concrete.
Embodiment
Below in conjunction with embodiment, the present invention is made to specific description, following proportioning if no special instructions, is weight ratio.
Embodiment 1
The cement-base concrete interface agent of the present embodiment, its component and content are: titanate-containing sulpho-aluminate cement: 50%, water: 45%, conditioning agent Sodium Tetraborate: 2%, tackiness agent: 3%;
The composition of described titanate-containing sulpho-aluminate cement and content are: anhydrous baric calcium sulphoaluminate (1.75CaO1.25BaO3Al
2o
3caSO
4): 55%, Dicalcium Phosphate (Feed Grade) (2CaOSiO
2): 37%, iron phase (2CaOFe
2o
3-6CaO2Al
2o
3fe
2o
3): 3%, gypsum 5%; Described percentage ratio is weight percentage.
The composition of described tackiness agent and content are: silica flour 20%, flyash 30%, slag powders 12%, epoxy resin 15%, low alkali expanding admixture 15%, hydroxypropyl methyl cellulose ether 8%.
Cement-base concrete interface agent adopts following methods to make:
First according to bauxitic clay: Wingdale: gypsum: the ratio of barium sulfate==45%:35%:15%:5%, mix, be sintered into the grog that contains appropriate anhydrous barium-bearing calcium sulfo-aluminate, add again gypsum to make titanate-containing sulpho-aluminate cement, then titanate-containing sulpho-aluminate cement, water and composite regulator are mixed, make a kind of cement-base concrete interface agent.
With 150x150xl50mm mould, make the concrete sample of the half block of 150x150x75mm3, maintenance 28 days, they are carried out to surface roughening processing, and the present invention of the about 1mm of brushing one deck makes cement-base concrete interface agent, cast is thereon repaired with the concrete of the identical proportioning of former concrete, maintenance, after 28 days, is measured cleavage strength as table 1 again.
Table l
Can find out: adopt titanate-containing sulpho-aluminate cement base interfacial agents repair efficiency to have clear improvement than generic interface agent.
Ordinary Portland cement base interfacial agents was processed New-old concrete after splitting, before interface and reparation, there is no considerable change; And the concrete of repairing through titanate-containing sulpho-aluminate cement base interfacial agents, after splitting, has had considerable change, New-old concrete almost to become as a whole before interface and reparation, there is good ultimate compression strength.
Embodiment 2
Described a kind of cement-base concrete interface agent, its component and content are: titanate-containing sulpho-aluminate cement: 68%, water: 30%, conditioning agent Sodium Tetraborate: 1%, adhesive epoxy resin: 1%;
The composition of described titanate-containing sulpho-aluminate cement and content are: anhydrous baric calcium sulphoaluminate (1.75CaO1.25BaO3Al
2o
3caSO
4): 70%, Dicalcium Phosphate (Feed Grade) (2CaOSiO
2): 20%, iron phase (2CaOFe
2o
3-6CaO2Al
2o
3fe
2o
3): 3%, gypsum 7%, described percentage ratio is weight percentage.
The composition of described tackiness agent and content are: silica flour 15%, flyash 30%, slag powders 20%, epoxy resin 15%, low alkali expanding admixture 15%, hydroxypropyl methyl cellulose ether 5%.
Preparation method is with embodiment 1.
With 150x150xl50mm mould, make the concrete sample of the half block of 150x150x75mm3, maintenance 28 days, they are carried out to surface roughening processing, and the present invention of the about 1mm of brushing one deck makes cement-base concrete interface agent, cast is thereon repaired with the concrete of the identical proportioning of former concrete, maintenance, after 28 days, is measured cleavage strength as table 2 again.
Table 2
Can find out: adopt titanate-containing sulpho-aluminate cement base interfacial agents repair efficiency to have clear improvement than generic interface agent.
Embodiment 3
Described a kind of cement-base concrete interface agent, its component and content are: barium aluminosulfate cement: 60%, water: 35%, conditioning agent Sodium Tetraborate: 2%, adhesive epoxy resin: 3%;
Composition and the content of described barium aluminosulfate cement are: anhydrous baric calcium sulphoaluminate (1.75CaO1.25BaO3Al
2o
3caSO
4): 60%, Dicalcium Phosphate (Feed Grade) (2CaOSiO
2): 30%, iron phase (2CaOFe
2o
3-6CaO2Al
2o
3fe
2o
3): 5%, gypsum 5%.
The composition of described tackiness agent and content are: silica flour %, flyash 30%, slag powders 20%, epoxy resin 13%, low alkali expanding admixture 9%, hydroxypropyl methyl cellulose ether 8%.
Preparation method is with embodiment 1.
With 150x150xl50mm mould, make the concrete sample of the half block of 150x150x75mm3, maintenance 28 days, they are carried out to surface roughening processing, and the present invention of the about 1mm of brushing one deck makes cement-base concrete interface agent, cast is thereon repaired with the concrete of the identical proportioning of former concrete, maintenance, after 28 days, is measured cleavage strength as table 3 again.
Table 3
Can find out: adopt titanate-containing sulpho-aluminate cement base interfacial agents repair efficiency to have clear improvement than generic interface agent.
Claims (2)
1. a cement-base concrete interface agent, is characterized in that: its component and content are:
Titanate-containing sulpho-aluminate cement: 50 ~ 68%
Water: 30 ~ 48%
Conditioning agent Sodium Tetraborate: 1 ~ 3%
Tackiness agent: 1 ~ 3%;
The composition of described titanate-containing sulpho-aluminate cement and content are:
Anhydrous baric calcium sulphoaluminate 1.75CaO1.25BaO3Al
2o
3caSO
4: 55 ~ 75%
Dicalcium Phosphate (Feed Grade) 2CaOSiO
2: 8 ~ 37%
Iron phase 2CaOFe
2o
3-6CaO2Al
2o
3fe
2o
3: 3 ~ 10%
Gypsum: 5 ~ 8%
Described percentage ratio is weight percentage;
The composition of tackiness agent and content are: silica flour 5%～20%, flyash 10%～30%, slag powders 5%～20%, epoxy resin 10%～15%, low alkali expanding admixture 9%～15%, hydroxypropyl methyl cellulose ether 2%～8%.
2. cement-base concrete interface agent according to claim 1, is characterized in that: described anhydrous baric calcium sulphoaluminate is by the raw material of following weight percent, to be calcined and formed, bauxitic clay: Wingdale: gypsum: barium sulfate=45%:35%:15%:5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310463214.8A CN103524103A (en) | 2013-10-08 | 2013-10-08 | Cement-based concrete interface agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310463214.8A CN103524103A (en) | 2013-10-08 | 2013-10-08 | Cement-based concrete interface agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103524103A true CN103524103A (en) | 2014-01-22 |
Family
ID=49926518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310463214.8A Pending CN103524103A (en) | 2013-10-08 | 2013-10-08 | Cement-based concrete interface agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103524103A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556907A (en) * | 2014-12-31 | 2015-04-29 | 安徽中龙建材科技有限公司 | High-viscosity aerated concrete block binder as well as preparation method and application thereof |
| CN106007595A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Concrete interface treating agent |
| CN108798053A (en) * | 2018-05-31 | 2018-11-13 | 昆明理工大学 | A kind of method that ECC reinforces damaged frame Structure Beam-column node |
-
2013
- 2013-10-08 CN CN201310463214.8A patent/CN103524103A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556907A (en) * | 2014-12-31 | 2015-04-29 | 安徽中龙建材科技有限公司 | High-viscosity aerated concrete block binder as well as preparation method and application thereof |
| CN104556907B (en) * | 2014-12-31 | 2017-01-25 | 安徽中龙建材科技有限公司 | High-viscosity aerated concrete block binder as well as preparation method and application thereof |
| CN106007595A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Concrete interface treating agent |
| CN108798053A (en) * | 2018-05-31 | 2018-11-13 | 昆明理工大学 | A kind of method that ECC reinforces damaged frame Structure Beam-column node |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |