GB564938A - Improvements in the production of pre-stressed reinforced concrete sleepers - Google Patents

Improvements in the production of pre-stressed reinforced concrete sleepers

Info

Publication number
GB564938A
GB564938A GB614943A GB614943A GB564938A GB 564938 A GB564938 A GB 564938A GB 614943 A GB614943 A GB 614943A GB 614943 A GB614943 A GB 614943A GB 564938 A GB564938 A GB 564938A
Authority
GB
United Kingdom
Prior art keywords
mould
cover
concrete
reinforced concrete
tubes
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
GB614943A
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.)
DOWSETT ENGINEERING CONSTRUCTI
RONALD SAMUEL VERNON BARBER
Original Assignee
DOWSETT ENGINEERING CONSTRUCTI
RONALD SAMUEL VERNON BARBER
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 DOWSETT ENGINEERING CONSTRUCTI, RONALD SAMUEL VERNON BARBER filed Critical DOWSETT ENGINEERING CONSTRUCTI
Priority to GB614943A priority Critical patent/GB564938A/en
Publication of GB564938A publication Critical patent/GB564938A/en
Expired legal-status Critical Current

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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
    • 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

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

564,938. Reinforced concrete sleepers. DOWSETT ENGINEERING CONSTRUCTION, Ltd., and BARBER, R. S. V. April 16, 1943, No. 6149. [Class 20 (iv)] [Also in Group V] A pre-stressed reinforced concrete sleeper, beam, or slab is made in a mould 12 having a fixed end plate 14 to which the reinforcing wires are secured, and a movable end plate 16 carried by a plunger 18 to which the wires are secured by wedges 20. A cover 21 is carried by hydraulic rams 23 and is a sliding fit in the mould. In operation, the mould is filled with concrete and pressure applied by the cover 21. Water escapes through tubes 24 having openings 25 and the outward pressure on the plunger 18 stresses the'wires. When discharge of water ceases, rods 27 are pushed down to free the tubes 24 of concrete, and the tubes are then pushed down until the openings 25 are covered. The walls of the mould and the cover may be formed as a jacket for hot water or steam to expedite the setting of the concrete, and vibration may also be applied to the mould or cover. Specifications 338,864, [Class 20 (iv)], 364,621, 393,576, [both in Group V], 433,059 and 468,706 are referred to.
GB614943A 1943-04-16 1943-04-16 Improvements in the production of pre-stressed reinforced concrete sleepers Expired GB564938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB614943A GB564938A (en) 1943-04-16 1943-04-16 Improvements in the production of pre-stressed reinforced concrete sleepers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB614943A GB564938A (en) 1943-04-16 1943-04-16 Improvements in the production of pre-stressed reinforced concrete sleepers

Publications (1)

Publication Number Publication Date
GB564938A true GB564938A (en) 1944-10-19

Family

ID=9809300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB614943A Expired GB564938A (en) 1943-04-16 1943-04-16 Improvements in the production of pre-stressed reinforced concrete sleepers

Country Status (1)

Country Link
GB (1) GB564938A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0545346A1 (en) * 1991-12-03 1993-06-09 Technische Universität Dresden Filter core for dewatering during the pressing of fresh concrete
FR2781406A1 (en) * 1998-07-27 2000-01-28 Armines Ass Pour La Rech Et Le Method for the production of a hardening material, notably cement based, at higher production rates and with improved mechanical characteristics
WO2003056135A1 (en) * 2001-12-21 2003-07-10 Gordon Cowan Support apparatus and apparatus for producing concrete articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0545346A1 (en) * 1991-12-03 1993-06-09 Technische Universität Dresden Filter core for dewatering during the pressing of fresh concrete
FR2781406A1 (en) * 1998-07-27 2000-01-28 Armines Ass Pour La Rech Et Le Method for the production of a hardening material, notably cement based, at higher production rates and with improved mechanical characteristics
WO2003056135A1 (en) * 2001-12-21 2003-07-10 Gordon Cowan Support apparatus and apparatus for producing concrete articles

Similar Documents

Publication Publication Date Title
IT965788B (en) PROCEDURE FOR THE PRODUCTION OF A STEEL IN BARS FOR REINFORCEMENTS FOR PRECOMPRESSED CONCRETE
ES324760A1 (en) Procedure for manufacturing beams with soil of armed and-or pretensed concrete. (Machine-translation by Google Translate, not legally binding)
GB564938A (en) Improvements in the production of pre-stressed reinforced concrete sleepers
GB1375203A (en)
GB1075507A (en) Mould apparatus and method
ES432820A1 (en) Method of producing shaped concrete blocks for hydraulics
ES400451A1 (en) Reinforced girder
FR2434693A2 (en) Prestressing bed for precast concrete beams - has mould with fixed slotted end forms and pistons to assist striking
GB580716A (en) Improvements in or relating to kerb-stones
GB567865A (en) Improvements in or relating to reinforced pre-cast concrete columns
GB573309A (en) Improvements in the production of pre-stressed reinforced concrete sleepers and similar beams
GB541160A (en) Improvements in or relating to the stretching and anchorage of cables or bundles of hard steel wires for prestressed reinforced concrete
GB905303A (en) Improvements relating to anchoring cavities in concrete
ES104362U (en) Ceramic slab perfected (Machine-translation by Google Translate, not legally binding)
SU91619A1 (en) Hydraulic jack for tensioning reinforcement in the manufacture of prestressed concrete structures
GB567648A (en) An improved method of making concrete cavity beams
GB623703A (en) Improvements in and relating to the construction of tunnels
GB696528A (en) Improved building bricks and methods of building therewith
SU912883A1 (en) Apparatus for constructing underground structures
ES268142A1 (en) System of construction of aligerated forgeds of armed concrete, requested by negative moments (Machine-translation by Google Translate, not legally binding)
GB621106A (en) Improvements in the construction of concrete walls in situ
GB559489A (en) Improvements in concrete building structures
GB1166307A (en) Process for the Production of Prefabricated Cast Elements.
ES184369U (en) Mixed beam perfected. (Machine-translation by Google Translate, not legally binding)
ES262942A1 (en) Improvements in the prefabricated formwork molding systems and cement molds (Machine-translation by Google Translate, not legally binding)