GB1250976A - - Google Patents
Info
- Publication number
- GB1250976A GB1250976A GB1250976DA GB1250976A GB 1250976 A GB1250976 A GB 1250976A GB 1250976D A GB1250976D A GB 1250976DA GB 1250976 A GB1250976 A GB 1250976A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- reinforcement
- conductors
- grout
- conductor
- 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
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
- E04C5/10—Ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/046—Post treatment to obtain pre-stressed articles
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
1,250,976. Post-tensioned concrete. PHILIPP HOLZMANN A.G. 6 May, 1969 [7 May, 1968], No. 23145/69. Heading E1W. [Also in Division H5] A tube 3 extending through a concrete structure 1 to define a duct for post-tensioned reinforcement 2 is, upon the introduction and during curing of the grout 7, heated by passing current through one or more insulated electrical conductors 5 in direct contact with the tube. The conductor or conductors may be wound helically around the exterior or interior of the tube and may be housed in a helically extended corrugation formed around the tube, Figs. 3 and 5 not shown or within a folded seam forming part of a known per se tube construction. Fig. 7 (not shown). The conductor or conductors may extend parallel to the axis, internally or externally of a tube which may be of corrugated profile or smooth. The heating may be effected prior to the introduction of grout and preferably with the tube filled with water, before the tensioning and anchoring of the reinforcement so that the reinforcement is subjected to thermal extension whereby an increase in prestressing force is effected when subsequent cooling is allowed to take place.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT439168A AT279124B (en) | 1968-05-07 | 1968-05-07 | Process and duct for the production of prestressed concrete components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1250976A true GB1250976A (en) | 1971-10-27 |
Family
ID=3563370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250976D Expired GB1250976A (en) | 1968-05-07 | 1969-05-06 |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT279124B (en) |
| CH (1) | CH506675A (en) |
| DE (1) | DE1800324A1 (en) |
| FI (1) | FI48007C (en) |
| FR (1) | FR2007961A1 (en) |
| GB (1) | GB1250976A (en) |
| NL (1) | NL6906877A (en) |
| SE (1) | SE407826B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070167A1 (en) * | 1999-05-14 | 2000-11-23 | Raffensperger, Patricia | Bonded prestressing system |
| WO2009098325A1 (en) * | 2008-07-14 | 2009-08-13 | Technical University Of Denmark | Light-weight load-bearing structures reinforced by core elements made of segments and a method of casting such structures |
| WO2013191615A1 (en) * | 2012-06-19 | 2013-12-27 | Btng Projekt Ab | Construction element and method to manufacture such a construction element |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT396152B (en) * | 1989-04-11 | 1993-06-25 | Wietek Bernhard Dipl Ing | SHELL PIPE FOR A STEEL REINFORCING BAR |
| EP0625414A1 (en) * | 1993-05-08 | 1994-11-23 | Wayss & Freytag Aktiengesellschaft | Process for increasing the adhesion in prestressed concrete sleepers or similar products of improved fatigue strength with grouted anchoring and forming apparatus for carrying out the process |
-
1968
- 1968-05-07 AT AT439168A patent/AT279124B/en not_active IP Right Cessation
- 1968-10-01 DE DE19681800324 patent/DE1800324A1/en not_active Withdrawn
-
1969
- 1969-04-30 CH CH664069A patent/CH506675A/en not_active IP Right Cessation
- 1969-04-30 FR FR6913785A patent/FR2007961A1/fr not_active Withdrawn
- 1969-05-06 GB GB1250976D patent/GB1250976A/en not_active Expired
- 1969-05-06 NL NL6906877A patent/NL6906877A/xx unknown
- 1969-05-06 SE SE636869A patent/SE407826B/en unknown
- 1969-05-06 FI FI132469A patent/FI48007C/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070167A1 (en) * | 1999-05-14 | 2000-11-23 | Raffensperger, Patricia | Bonded prestressing system |
| WO2009098325A1 (en) * | 2008-07-14 | 2009-08-13 | Technical University Of Denmark | Light-weight load-bearing structures reinforced by core elements made of segments and a method of casting such structures |
| EA018421B1 (en) * | 2008-07-14 | 2013-07-30 | Абео А/С | Light-weight load-bearing structures reinforced by core elements made of segments and a method of casting such structures |
| WO2013191615A1 (en) * | 2012-06-19 | 2013-12-27 | Btng Projekt Ab | Construction element and method to manufacture such a construction element |
Also Published As
| Publication number | Publication date |
|---|---|
| SE407826B (en) | 1979-04-23 |
| FR2007961A1 (en) | 1970-01-16 |
| NL6906877A (en) | 1969-11-11 |
| FI48007B (en) | 1974-01-31 |
| DE1800324A1 (en) | 1970-02-05 |
| AT279124B (en) | 1970-02-25 |
| FI48007C (en) | 1974-05-10 |
| CH506675A (en) | 1971-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |