ES338911A1 - Manufacture of prestressed concrete pipes - Google Patents
Manufacture of prestressed concrete pipesInfo
- Publication number
- ES338911A1 ES338911A1 ES338911A ES338911A ES338911A1 ES 338911 A1 ES338911 A1 ES 338911A1 ES 338911 A ES338911 A ES 338911A ES 338911 A ES338911 A ES 338911A ES 338911 A1 ES338911 A1 ES 338911A1
- Authority
- ES
- Spain
- Prior art keywords
- concrete
- pipe
- water
- mould
- pressure
- 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
-
- 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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/18—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements
-
- 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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
-
- 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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/90—Methods or apparatus for demoulding or discharging after shaping
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Prestressed reinforced concrete pipes are formed by forming a concrete pipe containing reinforcement in a hollow resilient mould, applying pressure inside the pipe before the concrete hardens and then releasing the pressure and removing the pipe from the mould. As described the mould comprises a rigid casing 2 and a resilient moulding surface 1 preferably of reinforced glass fibre. End pieces 7, 6 contain holes 10 in which the reinforcement 8A is located the concrete pipe 8B being formed round the reinforcement by any suitable process such as rotational casting. A lining 11 impermeable to water is placed over the inner face of the concrete and a bulkhead assembly 12 comprising a tube 14 with ends 16 and 18 is inserted into the mould so that end 16 sealably abuts end 7. A further bulkhead 22 with attached rim 24 seals the other end of the water cavity (13) and is attached to end member 18 by bolt 19 and nut 27. Suitable sealing rings are supplied at each join to prevent leakage of water. Warm water (to speed the setting of the concrete) is supplied under pressure through pipe 30 and the pressure maintained until the concrete has set. The water pressure is released and the bulkhead assembly 12 and also rings 7 and 6 are removed. Steel discs 31, 32 fitted with rubber gaskets are then fitted, 31 to the right hand end of the pipe and 32 (which contains a water inlet) to the right hand end of rigid casing 2. Water pumped through disc 32 into the space between these discs forces the pipe out of the mould.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU3913/66A AU391366A (en) | 1966-04-06 | 1966-04-06 | Improvements in and relating tothe manufacture of prestresses concrete pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES338911A1 true ES338911A1 (en) | 1968-08-16 |
Family
ID=3694388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES338911A Expired ES338911A1 (en) | 1966-04-06 | 1967-04-04 | Manufacture of prestressed concrete pipes |
Country Status (8)
| Country | Link |
|---|---|
| AU (1) | AU391366A (en) |
| BE (1) | BE696634A (en) |
| CH (1) | CH450262A (en) |
| DE (1) | DE1683945A1 (en) |
| ES (1) | ES338911A1 (en) |
| GB (1) | GB1142535A (en) |
| NL (1) | NL6704767A (en) |
| SE (1) | SE315537B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ216568A (en) * | 1985-06-18 | 1988-07-28 | Graeme Reginald Hume | Casting concrete pipes around expandable mandrel |
| CN110542703B (en) * | 2019-10-14 | 2022-07-19 | 哈尔滨工业大学 | Device and method for monitoring thermal expansion stress and deformation of foam concrete in constraint state |
| CN112895113B (en) * | 2021-01-15 | 2021-08-24 | 金华巨龙管道有限公司 | Multifunctional prestressed concrete pipe and manufacturing method thereof |
| CN113910441B (en) * | 2021-11-10 | 2022-11-25 | 徐州市解台水泥制品有限公司 | Cement pipe forming device |
-
1966
- 1966-04-06 AU AU3913/66A patent/AU391366A/en not_active Expired
-
1967
- 1967-04-04 GB GB1543567A patent/GB1142535A/en not_active Expired
- 1967-04-04 ES ES338911A patent/ES338911A1/en not_active Expired
- 1967-04-04 NL NL6704767A patent/NL6704767A/xx unknown
- 1967-04-05 BE BE696634D patent/BE696634A/xx unknown
- 1967-04-05 SE SE470067A patent/SE315537B/xx unknown
- 1967-04-05 DE DE19671683945 patent/DE1683945A1/en active Pending
- 1967-04-06 CH CH485167A patent/CH450262A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1142535A (en) | 1969-02-12 |
| SE315537B (en) | 1969-09-29 |
| DE1683945A1 (en) | 1971-03-04 |
| CH450262A (en) | 1968-01-15 |
| AU391366A (en) | 1969-10-10 |
| NL6704767A (en) | 1967-10-09 |
| BE696634A (en) | 1967-09-18 |
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