CN1233767C - Adhesive for slowly binding prestressed rib - Google Patents
Adhesive for slowly binding prestressed rib Download PDFInfo
- Publication number
- CN1233767C CN1233767C CN 02156688 CN02156688A CN1233767C CN 1233767 C CN1233767 C CN 1233767C CN 02156688 CN02156688 CN 02156688 CN 02156688 A CN02156688 A CN 02156688A CN 1233767 C CN1233767 C CN 1233767C
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- epoxy
- resins
- tackiness agent
- agent
- prestressed reinforcement
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Abstract
The present invention provides an adhesive for slow-binding prestressed reinforcement. Materials utilized by the adhesive are composed of epoxy resin, plasticizing agents, curing agents and fillers and have the proportion by weight of 100 % of epoxy resin, 6 to 12 % of plasticizing agents, 4 to 26 % of curing agents and 150 to 350 % of fillers. The present invention has the advantages that the adhesive for slow-binding prestressed reinforcement is firmly bond with prestressed reinforcement after solidification, the invasion of an external corrosive medium is blocked, and the prestressed reinforcement can keep away from corrosive action. Slow-binding prestressed reinforcement are directly connected with a structural reinforcing cage according to a designed position in structural construction without grouting materials and corrugated pipes, the disadvantage that the prestressed reinforcement is fixedly bond with the corrugated pipes due to the mortar leakage of the corrugated pipes is avoided, and the present invention has favorable adaptability in construction.
Description
Technical field
The present invention relates to a kind of tackiness agent, the tackiness agent of using especially for a kind of delayed bonding prestressed tendon of presstressed reinforcing steel.
Background technology
The processing method of deposit concrete (hereinafter to be referred as pretensioning method) and first deposit concrete post tensioning presstressed reinforcing steel (hereinafter to be referred as post stretching) behind the pretensioning presstressed reinforcing steel is all adopted in the construction of prestressed concrete structure.In post stretching technology, during deposit concrete, according to prestressed position, placement can penetrate the corrugated tube of presstressed reinforcing steel, after concrete to be cast reaches certain intensity, and stretch-draw and anchoring presstressed reinforcing steel.Adopt the technology of grout injection at last, will fill with grout in the corrugated tube, with the globality of increase presstressed reinforcing steel and structure, and the corrosion that alleviates presstressed reinforcing steel.
In the construction of engineering structure,, cause some inconvenience to construction because corrugated tube duct mortar in the concrete depositing operation bleeds.More, bring some hidden danger for the globality of structure and the corrosion of presstressed reinforcing steel because in the duct grouting operation, grout can not be full of the corrugated tube duct fully.Especially in the less member of section, the oblate corrugated duct of layout, the space is narrower, and the fullness rate of grout is poorer, and its presstressed reinforcing steel corrosive chance is more.Simultaneously, it is to be in the prestressed concrete structure that has under the corrosive medium condition that many engineering structures are arranged, and as sea port dock, offshore production platform, bridge over strait and marine oil storage facility etc., all is under the etching condition of seawater and marine atmosphere; Some prestressed structures in the sewage work, some prestressed structures in the large chemical plant all are in the environment of sewage and some other corrosive mediums, and presstressed reinforcing steel is corroded even more serious.Know that from Corrosion of Metallic Materials mechanism and envrionment conditions if the presstressed reinforcing steel in the structure is in the environment of neutrality or meta-alkalescence, the possibility that is corroded just seldom.If in the outside of construction pre-stress muscle, be coated with the material of bag one deck neutrality or meta-alkalescence, the passage between blocking-up presstressed reinforcing steel and the external environment just can play the effect of presstressed reinforcing steel in the protection structure.At present, the unbonded prestressing tendon surface is coated with the bag grease, and on the grease outer cover pe sheath of hot extrusion molding.Unbonded prestressing tendon can not solve the etching problem of presstressed reinforcing steel.
Summary of the invention
The purpose of this invention is to provide the tackiness agent that a kind of a kind of delayed bonding prestressed tendon that improves favorable applicability in presstressed reinforcing steel erosion resistance and the construction is used.
For achieving the above object, technical scheme of the present invention provides the tackiness agent that a kind of delayed bonding prestressed tendon is used, the used material of tackiness agent is made up of several parts of Resins, epoxy, softening agent, solidifying agent and filler, and its weight ratio is a Resins, epoxy: 100, softening agent: 6～12, solidifying agent: 4～26, filler: 150～350.
Described Resins, epoxy is the Resins, epoxy of bisphenol A-type, wherein adds 5～40% reactive thinner diglycidyl ether of ethylene glycol, the two is molten be mixed even after, the Resins, epoxy of using as tackiness agent.
Described softening agent is dibutyl phthalate or dioctyl phthalate (DOP).
Described solidifying agent is Dyhard RU 100 and imidazoles.
Described filler is levigate lime carbonate or levigate calcium oxide or materials such as cement or talcum powder.
Effect of the present invention bonds together with presstressed reinforcing steel after being the adhesive solidification used of delayed bonding prestressed tendon securely, has blocked the intrusion of extraneous corrosive medium, protects presstressed reinforcing steel not to be subjected to corrosive nature in good condition.Delayed bonding prestressed tendon is in the construction of structure, directly be connected by design attitude with the Framework Of Steel Reinforcement of structure, in construction, do not need injection material and save corrugated tube, and avoided because the disadvantage that presstressed reinforcing steel that the corrugated tube spillage produces and corrugated tube are consolidated has favorable applicability in construction.
Embodiment
The tackiness agent that a kind of delayed bonding prestressed tendon of the present invention is used is illustrated in conjunction with the embodiments.
The used material of the tackiness agent that delayed bonding prestressed tendon of the present invention is used is made up of several parts of Resins, epoxy, softening agent, solidifying agent and filler, and its weight ratio is a Resins, epoxy: 100, softening agent: 6～12, solidifying agent: 4～26, filler: 150～350; Described Resins, epoxy is the Resins, epoxy of bisphenol A-type, adds 5～40% reactive thinner diglycidyl ether of ethylene glycol therein, the two is molten be mixed even after, the Resins, epoxy of using as tackiness agent.
Described softening agent is dibutyl phthalate or dioctyl phthalate (DOP).
Described solidifying agent is Dyhard RU 100 and imidazoles.
Described filler is levigate lime carbonate or levigate calcium oxide or materials such as cement or talcum powder.
The tackiness agent that delayed bonding prestressed tendon of the present invention is used is made like this: add described Resins, epoxy by weight in the still of stirring is arranged: 100, heat to 35-45 ℃, adding softening agent again is dibutyl phthalate or dioctyl phthalate (DOP), stir, adding solidifying agent again is Dyhard RU 100 and imidazoles.The material that stirs by putting into the container that has stirring in the still, is added levigate lime carbonate or levigate calcium oxide or fillers such as cement or talcum powder, pour out after stirring, mix, make finished product by triple-roller mill.
The delayed bonding prestressed tendon that the tackiness agent of using with delayed bonding prestressed tendon is made be a kind of in the prestressed structure construction the presstressed reinforcing steel without injection material with Corrosion Protection.In construction of prestressed concrete structure, before the concrete depositing operation, Framework Of Steel Reinforcement according to design attitude and structure is connected, do not need the corrugated tube in the general post stressed concrete construction, in the time limit of concrete depositing and its gain in strength, be coated with and wrap in the tackiness agent not curing still that the delayed bonding prestressed tendon on the presstressed reinforcing steel is used, do not influence the stretch-draw anchor operation of construction pre-stress muscle, because of nothing has the corrugated tube duct, then saved the grouting operation, along with the continuity of time, just bond together securely with pe sheath and structural concrete after the tackiness agent completely solidified.The Resins, epoxy of the meta-alkalescence that the tackiness agent after the curing is selected for use is host, and solidifying agent and filler all are meta-alkalescences, so the tackiness agent after solidifying can not produce corrosion to deformed bar.Behind this adhesive solidification, bond together with presstressed reinforcing steel securely, blocked the intrusion of extraneous corrosive medium, protect presstressed reinforcing steel not to be subjected to corrosive nature in good condition.The presstressed reinforcing steel that is coated with the tackiness agent used of bag delayed bonding prestressed tendon is in the construction of structure, do not need injection material and corrugated tube by direct being connected of design attitude with the Framework Of Steel Reinforcement of structure, and avoided because the disadvantage that presstressed reinforcing steel that the corrugated tube spillage produces and corrugated tube are consolidated has favorable applicability in construction.
Claims (4)
1, the tackiness agent used of a kind of delayed bonding prestressed tendon, it is characterized in that: the used material of tackiness agent is made up of several parts of Resins, epoxy, softening agent, solidifying agent and filler, and its weight ratio is a Resins, epoxy: 100, softening agent: 6～12, solidifying agent: 4～26, filler: 150～350; Described Resins, epoxy is the Resins, epoxy of bisphenol A-type, and adds 5～40% reactive thinner diglycidyl ether of ethylene glycol therein, the two is molten be mixed even after, the Resins, epoxy of using as described tackiness agent.
3, the tackiness agent used of delayed bonding prestressed tendon according to claim 1, it is characterized in that: described softening agent is dibutyl phthalate or dioctyl phthalate (DOP).
3, the tackiness agent used of delayed bonding prestressed tendon according to claim 1, it is characterized in that: described solidifying agent is Dyhard RU 100 and imidazoles.
4, the tackiness agent used of delayed bonding prestressed tendon according to claim 1, it is characterized in that: described filler is levigate lime carbonate or levigate calcium oxide or materials such as cement or talcum powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156688 CN1233767C (en) | 2002-12-19 | 2002-12-19 | Adhesive for slowly binding prestressed rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156688 CN1233767C (en) | 2002-12-19 | 2002-12-19 | Adhesive for slowly binding prestressed rib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1425731A CN1425731A (en) | 2003-06-25 |
| CN1233767C true CN1233767C (en) | 2005-12-28 |
Family
ID=4752802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02156688 Expired - Fee Related CN1233767C (en) | 2002-12-19 | 2002-12-19 | Adhesive for slowly binding prestressed rib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233767C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506929C (en) * | 2004-04-28 | 2009-07-01 | 宝山钢铁股份有限公司 | Aqueous self-bonding coating for electrical steel |
| CN1304516C (en) * | 2005-12-23 | 2007-03-14 | 中冶集团建筑研究总院 | Adhesive for slow-binding prestress reinforcement |
| CN101338153B (en) * | 2008-08-20 | 2010-12-15 | 江苏科技大学 | High temperature resistant foam glue and method for preparing same |
| ATE556101T1 (en) * | 2009-11-30 | 2012-05-15 | Hilti Ag | TWO-COMPONENT ADHESIVE SUITABLE FOR CONSTRUCTION PURPOSES, ITS USE AND CURED STRUCTURAL ADHESIVE JOINTS OBTAINED THEREFROM |
| CN102295905A (en) * | 2011-07-01 | 2011-12-28 | 甘肃泰达建筑技术发展有限公司 | High performance retard-bonded material for retard-bonded prestressed reinforcing steel and preparation method thereof |
| CN104004437B (en) * | 2014-04-16 | 2016-07-06 | 国家电网公司 | A kind of transformator corrosion resistant coating |
| CN104746801B (en) * | 2015-02-10 | 2017-01-18 | 山西省交通科学研究院 | Prestressed concrete and construction method thereof |
| CN109207107A (en) * | 2018-10-16 | 2019-01-15 | 得时宝(广州)科技有限公司 | A kind of reinforcement type adhesive and preparation method thereof |
| CN109465958B (en) * | 2018-10-19 | 2021-04-27 | 德阳科吉高新材料有限责任公司 | Manufacturing process of high-speed rail plate containing inorganic reinforced fibers |
| CN111646734A (en) * | 2020-05-30 | 2020-09-11 | 吴立新 | Epoxy resin cementing material for slow-bonding prestressed tendon and use method thereof |
-
2002
- 2002-12-19 CN CN 02156688 patent/CN1233767C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1425731A (en) | 2003-06-25 |
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