GB1209701A - Prestressed concrete structures and a process for making them - Google Patents

Prestressed concrete structures and a process for making them

Info

Publication number
GB1209701A
GB1209701A GB1268168A GB1268168A GB1209701A GB 1209701 A GB1209701 A GB 1209701A GB 1268168 A GB1268168 A GB 1268168A GB 1268168 A GB1268168 A GB 1268168A GB 1209701 A GB1209701 A GB 1209701A
Authority
GB
United Kingdom
Prior art keywords
wire
coating
tendon
plastics
concrete
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.)
Expired
Application number
GB1268168A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1209701A publication Critical patent/GB1209701A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • C10M2201/083—Inorganic acids or salts thereof containing nitrogen nitrites
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06—Perfluorinated compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Ropes Or Cables (AREA)

Abstract

1,209,701. Prestressed concrete structures. E.I. DU PONT DE NEMOURS & CO. 15 March, 1968 [16 March, 1967], No. 12681/68. Heading E1W. [Also in Divisions D1 and C5] A tendon 4 in a pre-stressed concrete structure, comprises one or more "wires" 8 coated tightly and uniformly with a plastics material 10 which provides a coefficient of friction between the "wire" and coating of not more than 0.09. By "wire" is meant a filamentary material having an elastic limit of at least 150,000 psi, e.g. carbon steel or fibre glass. The wire diameter may be less than 0.03 ins. The plastics coating 10 may be up to 0.05 inches thick and formed about the wire by extrusion moulding. The plastic coating may be made of tetrafluoroethylene polymers and copolymers, polyamides and copolymers thereof, polyolefines, e.g. polyethylene and polypropylene, polystyrene, ABS resins, halogenated polyolefines, e.g. polyvinyl chloride, ethylene-methacrylic acid copolymer polyoxymethylene or polyethylene terephthalate. A lubricant may be as a film on the wire or it may be incorporated into the plastics coating. Specifled lubricants are (a) graphite, molybdenum disulphide and oils, e.g. silicone oil, for incorporation in the plastics and (b) mineral oils, hydrocarbon oils, graphites, and fluorocarbon polymers used alone or in combination with oil for use as a layer on the wire. A corrosion inhibitor, e.g. sodium nitriate ethanolamine or lauryl amine and a dispersing agent e.g. sulphonated hydrocarbons, sulphonamides and fatty acid salts can be present on the wire. In a modification, the "wire" has a first coating of plastics applied directly to the wire and a lubricant present between this first coating and a second coating functioning as the abovementioned coating. The tendon may be formed with a plurality of coated and lubricated wires in side-by-side and preferably separable, arrangement, see Figs. 6-11 not shown. The tendon is used for post-tensioning in concrete articles to hold the latter under compression. The tendon may lay in curved bent or rectilinear paths in the concrete. The total angle through which the tendon curves or bends may be up to 2000‹. The tendon 4 may be anchored in a crimped metal sheath 92, the latter abutting a bearing plate 80, see Figs. 24-26 not shown. The anchoring may be filled with grouting.
GB1268168A 1967-03-16 1968-03-15 Prestressed concrete structures and a process for making them Expired GB1209701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62370967A 1967-03-16 1967-03-16

Publications (1)

Publication Number Publication Date
GB1209701A true GB1209701A (en) 1970-10-21

Family

ID=24499123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1268168A Expired GB1209701A (en) 1967-03-16 1968-03-15 Prestressed concrete structures and a process for making them

Country Status (7)

Country Link
BE (1) BE712261A (en)
CH (1) CH469157A (en)
DE (1) DE1659205A1 (en)
ES (1) ES351663A1 (en)
FR (1) FR1556189A (en)
GB (1) GB1209701A (en)
NL (1) NL6803702A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113878329A (en) * 2021-11-19 2022-01-04 无锡明恒混合动力技术有限公司 Combined type motor rotor bearing pressure equipment device
CN115110774A (en) * 2022-06-16 2022-09-27 中化学建设集团有限公司 Post-tensioning method prestressed beam tensioning method and system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537731B2 (en) * 1972-10-19 1978-03-22
AT407766B (en) * 1989-02-27 2001-06-25 Vorspann Technik Gmbh Prestressing cable
ES2042271T5 (en) * 1989-04-12 1997-11-01 Vorspann Technik Gmbh TENSIONING GROUP OF VARIOUS TENSIONING ELEMENTS SUCH AS LACES, RODS OR WIRES.
DE19504235A1 (en) * 1995-02-09 1996-08-14 Ipa Isorast Int Process for the production of heat-insulated panels for large panel construction
AT407545B (en) * 1997-08-04 2001-04-25 Thal Hermann Dipl Ing TENSION BUNDLE AND METHOD AND DEVICE FOR PRODUCING THE SAME
CN109629462A (en) * 2019-01-17 2019-04-16 上海悍马建筑科技有限公司 Pre-stressed carbon fiber tension ground tackle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113878329A (en) * 2021-11-19 2022-01-04 无锡明恒混合动力技术有限公司 Combined type motor rotor bearing pressure equipment device
CN115110774A (en) * 2022-06-16 2022-09-27 中化学建设集团有限公司 Post-tensioning method prestressed beam tensioning method and system

Also Published As

Publication number Publication date
DE1659205A1 (en) 1971-01-07
BE712261A (en) 1968-07-15
CH469157A (en) 1969-02-28
FR1556189A (en) 1969-01-31
ES351663A1 (en) 1969-12-01
NL6803702A (en) 1968-09-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees