ASSESSING THE DEGREE OF RUSTING OF THE SURFACE OF THE ORTHOTROPIC PLATE DECK OF THE MOTORWAY BRIDGE ACROSS THE WERRA VALLEY

BEURTEILUNG DES ROST-ZUSTANDES DER OBERFLAECHE DER ORTHOTROPEN FAHRBAHNPLATTE DER BAB-WERRATALBRUECKE HEDEMUENDEN

THE AIM WAS TO ASSESS THE DEGREE OF RUSTING ON AREAS CLEANED BY FLAME CLEANING OR SAND BLASTING AFTER AN INTERVAL OF 7 TO 15 YEARS, AND TO PROVIDE INFORMATION CONCERNING THE SUITABILITY OF FLAME CLEANING AS AN ADEQUATE SURFACE PREPARATION FOR BONDING COATS. AFTER REMOVAL OF THE BITUMINOUS SURFACING THE BONDING COATS OF BITUMEN OR EPOXIDE RESIN WERE REMOVED WITH A STRIPPING PASTE AND THE SURFACE OF THE STEEL DECK WAS THEN CLEANED WITH TRICHLORETHYLENE. VISUAL AND PHOTOGRAPHIC ASSESSMENT OF THE SURFACE WAS CARRIED OUT. CASTS WERE TAKEN TO DETERMINE THE ROUGHNESS OF THE SURFACE TEXTURE. THE RESULTS SO FAR AVAILABLE SHOW THAT BOTH FLAME CLEANING AND SAND BLASTING ARE FUNDAMENTALLY SUITABLE AS SURFACE PREPARATION OF STEEL BRIDGE DECKS FOR THE APPLICATION OF BONDING COATS. THE DEGREE OF DERUSTING ACHIEVED CORRESPONDED IN GENERAL TO THE QUALITY GRADES OF SIS 055900. THE SAND BLASTED AREAS WERE SOMEWHAT CLEANER THAN FLAME CLEANED AREAS. DIFFERING DEGREES OF ADHESION OF THE BONDING COATS DEPENDING ON THE TYPE OF SURFACE PREPARATION AND THE DEGREE OF SURFACE ROUGHNESS COULD NOT BE ESTABLISHED.

  • Corporate Authors:

    STAATLICHES MATERIALPRUEFUNGSAMT NORDRHEIN-WESTF., DORTMUND

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  • Publication Date: 1976

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01293038
  • Record Type: Publication
  • Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
  • Files: ITRD
  • Created Date: Nov 21 2010 3:49AM