LOCATION OF JOINT DOWEL BARS IN CONCRETE SURFACINGS BY RADIOACTIVE MEANS

DETERMINACION DE LA POSICION DE LOS PASADORES EN JUNTAS DE PAVIMENTOS DE HORMIGON MEDIANTE MARCADO CON FUENTES RADIACTIVAS

The authors recall one of the disadvantages of rigid pavements: the discontinuity in the surfacing caused by expansion joints, which results in an uncomfortable ride. To remedy this defect, it is necessary to determine the relative position of the slabs, so that only expansion movements parallel to the axis of the alignment can occur. To achieve this, metal dowel bars 50 cm apart are placed in the joints parallel to the axis of the road. This parallel position can be controlled by means of destructive tests as non-destructive tests give inaccurate results. If the extremities of the dowel bars are marked by radioactive means, it is then possible to locate their exact position without having to extract any sample. This article describes those tests and results obtained, the latter being extremely satisfactory from the economic and technical point of view. The radioactive source used can be safely handled without any protection. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00348619
• Corporate Authors:

  Escuela de Ingenieros de Caminos

  Ciudad Universitaria
  Madrid 3,   Spain 
• Authors:
  • Enrique, B P
  • Antanoi, P D
• Publication Date: 1972-7

Language

• Spanish

Media Info

• Features: Figures; Photos;
• Pagination: p. 565-574
• Serial:
  • Revista de Obras Publicas
  • Issue Number: 3087
  • Publisher: Colegio de Ingenieros de Caminos
  • ISSN: 0034-8619

Subject/Index Terms

• TRT Terms: Alignment; Concrete pavements; Dowels; Electromagnetic radiation; Expansion; Expansion joints; Joints; Location; Mechanical tests; Position fixing; Radioactivity; Rigid pavements; Surfacing
• Uncontrolled Terms: Destructive testing; Position
• Old TRIS Terms: Joint
• ITRD Terms: 9138: Comfort; 9015: Discontinuous; 3896: Dowel; 3071: Evenness; 6720: Expansion; 2998: Joint (structural); 9061: Location; 6216: Non destructive testing; 6726: Radiation (nucl); 2964: Rigid pavement
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00096079
• Record Type: Publication
• Source Agency: Transportation & Soil Mechanics Laboratory, Spain
• Files: ITRD, TRIS
• Created Date: Sep 10 1975 12:00AM