CN1052648A - Injection concrete adhesion agent - Google Patents
Injection concrete adhesion agent Download PDFInfo
- Publication number
- CN1052648A CN1052648A CN 89109309 CN89109309A CN1052648A CN 1052648 A CN1052648 A CN 1052648A CN 89109309 CN89109309 CN 89109309 CN 89109309 A CN89109309 A CN 89109309A CN 1052648 A CN1052648 A CN 1052648A
- Authority
- CN
- China
- Prior art keywords
- concrete
- adhesion agent
- injection
- sprayed
- concrete adhesion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
Abstract
A kind of injection concrete adhesion agent, it can increase the viscosity of dry shotcreting, reduces rebound loss, reduces the aerial content of dust, and the intensity of sprayed concrete is increased.This adhesion agent is synthetic by the number of chemical raw material, specialize in the additive that sprayed concrete is used, be applicable to the thickening of mine working, railway tunnel and sprayed concrete of substructure work, but also be applicable to normal concrete, can increase concrete viscosity and intensity, the anti-physicals such as ability of mixing.
Description
The present invention relates to a kind of concrete additive.It is used to increase the viscosity of sprayed concrete, thereby is referred to as injection concrete adhesion agent.
China's tunnel engineering uses universe shotcrete to reinforce country rock more at present, and when spraying dry concrete, water and pulverous concrete mixture mix in the shower nozzle exit, are sprayed onto then on the country rock surface.Because concrete under the effect of reactive force, springs back in the air in large quantities, workman place spatial water in air mud dust content is very big, and dust content reaches 50～60 milligrams in every cubic metres of air.A large amount of cement dusts is threatening that shaft and drift excavation workman and builder's is healthy in the air.The a large amount of rebound loss of sprayed concrete makes the economic benefit of bolting and shotcreting be difficult to improve, and a large amount of cement are wasted.General rebound loss amount reaches 30～50% of concrete total amount, and each jetting thickness is little, reaches 5～7cm only.
Developed countries adopts wet shotcreting to reinforce the country rock in tunnel more, thereby it is big not deposit above-described rebound loss, the serious problems that dust is big.China's wet shotcreting machinery does not reach a standard as yet, and a lot of mine workings and railway, underground works adopt dry shotcreting more.The technology that addresses the above problem has following several.(1) in concrete, mixes accelerating chemicals, the concrete that is ejected into rock surface can be solidified rapidly, in 2.5 minutes, solidify and no longer come off.This accelerating chemicals can only prevent that concrete from coming off after spraying, reduce concrete loss.But bounce-back is returned in this method and the unresolved course of injection, loses concrete problem.(2) metallurgical research institute develops a kind of tackifier.This kind tackifier are actual to be a kind of extra material.It is to grind the powder (silica flour) that forms by inorganic mineral.It can not reduce the rebound loss rate significantly, more can not reduce the content of dust in the air.Be badly in need of a kind of adhesion agent of exploitation at present, improve the viscosity of sprayed concrete, Dust Capacity in rebound loss in the minimizing concrete course of injection and the working space, the while can be thickeied the thickness of each spray-up.
The objective of the invention is to work out a kind of injection concrete adhesion agent.This adhesion agent is synthetic by producing anion surfactant, hardening accelerator and multiple polymeric resin, is intended to increase and improves sprayed concrete or general concrete viscosity, reduces the Dust Capacity of rebound loss and operating space.
Injection concrete adhesion agent of the present invention draws effect and fills a prescription preferably through repetition test, and the prescription of this adhesion agent is as follows.Trolamine: 0.3～1.0%; Alkyl sodium sulfonate (or sodium alkyl sulfate, sodium alkyl benzene sulfonate): 0.3～1.0%; Sodium sulfate: 1.0～2.0%; Yellow soda ash: 0.1～1.0%; Polyacrylic ester: 0.5～1.0%; Polyvinyl alcohol: 2.0～6.0%; Surplus is a water.
The present invention also can be mixed with liquid and be processed into pulverous finished product.During use again with pulverous adhesion agent furnishing liquid.
The action principle of injection concrete adhesion agent of the present invention (aqueous) is, when this adhesion agent becomes half mixture that wets with the concrete mixture mix after, deliver to shower nozzle ingress and water mixing gelatinization by transport pipe with pressure wind, be the conveying of 100～120 centimetres of pipelines again through a segment length, in the short period of time of this distance, form the numerous sticking very high micro-bubble of shape on every side in the concrete, they are dispersed in around the aggregate, and cement and sandstone particle bond are integral.During the concrete ejection, viscosity is big, and is flexible, adheres to rock surface easily, unlikely bounce-back.Simultaneously, the micro-bubble that is formed by multiple high-polymer resin in the concrete is blocked the hole of inside concrete closely, cement, sandstone aggregate are coupled to very hard integral body, thereby physical and mechanical properties such as concrete impervious ability and tensile strength are improved, strengthened concrete freeze-thaw-ability simultaneously.
This injection concrete adhesion agent tests successfully in the surrounding rock supporting of railway tunnel country rock.When concrete spray coating was 28 days the length of time, tensile strength was 2.72MPa, and ultimate compression strength is 34.50MPa, with the scar cohesive force be 1.85MPa, the impermeabilisation ability is more than the 2.5MPa.During injection, the concrete springback loss is 7.5% for concrete 7.5～15.2%(abutment wall, and vault is 15.2%).Dust concentration is in the air of sprayed concrete operating space, has only 5 milligrams in every cubic metres of air, is lower than the quantity of defined in the state health standards.In this cleaning ambient, the operator can not be with mouth mask, and is harmless to workman's health.
The advantage of injection concrete adhesion agent of the present invention is: (1) can increase substantially the sticking silk fabric degree of sprayed concrete; (2) rebound loss of reduction sprayed concrete, the economic benefit of raising bolting and shotcreting; (3) air of reduction sprayed concrete operating space contains Dust Capacity, ensures the spraying workers'health; (4) can allow other operation and sprayed concrete operation to carry out simultaneously simultaneously, improve the efficient and the progress of tunnel driving; (5) easy to use; (6) cost is low; (7) each jetting thickness is big, can reach 12cm.
Use the economical effectiveness of this injection concrete adhesion agent.With only mix accelerating chemicals relatively, spray every cubic meter of concrete and can save 61.60 yuan, and mix mineral dust (silica flour) and relatively can save 54.60 yuan (every cubic meter of concrete is by 350 yuan of calculating).
This adhesion agent can be made pulverous, with the powder water dissolution, then solution is added in the concrete mixture before using, and sprays according to the method described above then.
This adhesion agent is applicable to that the tackify of mine working, various tunnel, underground engineering wall rock injection coagulation is thick, is applicable to that also the tackify of various concrete castings is thick, increases the anti-freeze-thaw-etc. of mixing, strengthen.
Claims (2)
1, a kind of injection concrete adhesion agent is characterized in that: it is made by following set of dispense: trolamine 0.3～1.0%; Alkyl sodium sulfonate (or sodium alkyl sulfate, the stupid sodium sulfonate of alkyl) 0.3～1.0%; Sodium sulfate 1.0～2.0%; Yellow soda ash 0.1～1.0%; Polyacrylic ester 0.5～1.0%; Polyvinyl alcohol 2～6%; Its surplus is a water.
2, injection concrete adhesion agent as claimed in claim 1 is characterized in that it can be mixed with liquid, also can be condensed into powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109309 CN1052648A (en) | 1989-12-18 | 1989-12-18 | Injection concrete adhesion agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109309 CN1052648A (en) | 1989-12-18 | 1989-12-18 | Injection concrete adhesion agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1052648A true CN1052648A (en) | 1991-07-03 |
Family
ID=4857944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109309 Withdrawn CN1052648A (en) | 1989-12-18 | 1989-12-18 | Injection concrete adhesion agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1052648A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001068549A1 (en) * | 2000-03-15 | 2001-09-20 | Hubert Heider | Mineral construction-material composition and the use thereof |
| CN102617184A (en) * | 2012-03-27 | 2012-08-01 | 江苏名和集团有限公司 | Concrete carbonization inhibitor |
| CN104165063A (en) * | 2014-08-15 | 2014-11-26 | 山东科技大学 | Mine roadway concrete spray rebound amount measurement and simulation experiment system |
| CN114591019A (en) * | 2022-03-15 | 2022-06-07 | 武汉源锦建材科技有限公司 | Rebound quantity regulator for sprayed concrete and application thereof |
-
1989
- 1989-12-18 CN CN 89109309 patent/CN1052648A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001068549A1 (en) * | 2000-03-15 | 2001-09-20 | Hubert Heider | Mineral construction-material composition and the use thereof |
| CN102617184A (en) * | 2012-03-27 | 2012-08-01 | 江苏名和集团有限公司 | Concrete carbonization inhibitor |
| CN104165063A (en) * | 2014-08-15 | 2014-11-26 | 山东科技大学 | Mine roadway concrete spray rebound amount measurement and simulation experiment system |
| CN114591019A (en) * | 2022-03-15 | 2022-06-07 | 武汉源锦建材科技有限公司 | Rebound quantity regulator for sprayed concrete and application thereof |
| CN114591019B (en) * | 2022-03-15 | 2023-01-03 | 武汉源锦建材科技有限公司 | Rebound quantity regulator for sprayed concrete and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C03 | Withdrawal of patent application (patent law 1993) | ||
| WW01 | Invention patent application withdrawn after publication |