CONTINUOUS NON-DESTRUCTIVE INSPECTION OF CONCRETE PAVEMENTS: ASPECTS OF THE METHOD EMPLOYED IN FRANCE FOR THE ROAD NETWORK MANAGED BY THE ADMINISTRATION
1. AUSCULTATION CONTINUE ET NON DESTRUCTIVE DES CHAUSSEES EN BETON. QUELQUES ASPECTS DE LA METHODE UTILISEE EN FRANCE POUR LE RESEAU GERE PAR L'ADMINISTRATION
Defects in concrete slabs are rarely attributable to the cement concrete, but their evolution is mainly linked with the deterioration of their bearing conditions. The main purpose of non-destructive inspection is to asses these bearing conditions. To this end, the LPC have developed, for the most significant indicators (deterioration of slabs, shifting of slabs, slab rocking) semi-rapid measuring instruments some of which work under traffic at speeds above 50 km/hr. GERPHO, the High Efficiency Unit for Photographic Surveying of Road Surface continuously photographs pavement traffic lanes at a speed of 50 to 60 km/hr. It is particularly good at detecting structural defects in concrete pavements: cracks and points where pumping phenomena occur between slabs. The A.P.L. (Longitudinal Profile Analyzer), used with a special data processing version, provides information on the shifting of slabs from measurements made at 72 km/hr. The D.M.B. D. (Slab Rocking Measurement Instrument) works at a much slower speed, about 1 kilometer an hour.
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Corporate Authors:
Laboratoire Central des Ponts et Chausees (LCPC)
Boulevard Lefebvre 58
Paris Cedex 15, France F-75732 -
Authors:
- Christory, J-P
- Publication Date: 1984-1
Language
- French
Media Info
- Features: References;
- Pagination: p. 99-109
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Serial:
- Bulletin de Liaison des Lab des Ponts et Chaussees
- Issue Number: 129
- Publisher: Laboratoire Central des Ponts et Chausees (LCPC)
Subject/Index Terms
- TRT Terms: Concrete; Concrete pavements; Defects; Detection and identification; Detectors; Flaw detection; Inspection; Measuring instruments; Nondestructive tests; Pavements; Photography; Slabs; Structural deterioration and defects; Surveying
- Old TRIS Terms: Bearing conditions; Structural defect detection
- Subject Areas: Highways; Maintenance and Preservation; Pavements;
Filing Info
- Accession Number: 00395119
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Jul 31 1985 12:00AM