LIGHTWEIGHT CONCRETE BEAMS: PARTIAL PRESTRESSING AND RESULTS OF 5-YEAR TESTS

POUTRES EN BETON LEGER: PRECONTRAINTE PARTIELLE ET RESULTATS DE CINQ ANNEES D'ESSAIS

The authors recall the basic principles of partial prestressing and the two basic conditions which have to be fulfilled during the design of bent members with partial prestressing: (1) static condition: safety against flexural failure must be adequate; (2) deformation condition: the extension or cracks of the tensioned edge caused by the total useful load must not exceed the permissible limits. Results are given of the main results obtained during long-term tests (5 years) carried out at the Institute of Applied Statistics and Construction of the "Ecole Polytechnique Federale", Zuerich, on partially prestressed lightweight concrete beams: maximum width of cracks, deflection, extension in one section, applied stresses on the stirrups. A study is also made of the cube compressive strength, shrinkage and creep of the lightweight concrete used in the tests. /TRRL/

• Corporate Authors:

  Societe de Diffusion de Tech du Bat et de Trav Pub

  9 rue la Perouse
  Paris 16e,   France 
• Authors:
  • BACHMANN, H
  • Flueckiger, P
• Publication Date: 1978-6

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 93-104
• Serial:
  • Annales de l'Institut Tech du Batiment Travaux Pub
  • Issue Number: 362
  • Publisher: Societe de Diffusion de Tech du Bat et de Trav Pub

Subject/Index Terms

• TRT Terms: Beams; Compressive strength; Concrete; Cracking; Deflection; Deformation; Failure; Fracture mechanics; Length; Lightweight concrete; Material reinforcement; Prestressed concrete; Prestressing; Shear strength; Shrinkage; Stirrups; Time
• Uncontrolled Terms: Concrete beams; Extension
• Old TRIS Terms: Concrete shrinkage
• ITRD Terms: 3472: Beam; 5211: Cracking; 5586: Deflection; 9032: Increase; 6488: Length; 4740: Lightweight concrete; 4796: Prestressed concrete; 5531: Shear; 3460: Stirrup (reinforcement); 5414: Time
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00300321
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: (Sols Fond-156)
• Files: ITRD, TRIS
• Created Date: Oct 17 1979 12:00AM