INFLUENCE OF HOT-DIP GALVANISING ON THE PROPERTIES OF PRESTRESSING STEELS
UNTERSUCHUNGEN UEBER DEN EINFLUSS DER FEUERVERZINKUNG AUF DIE EIGENSCHAFTEN VON SPANNSTAEHLEN
THE UNIFORMITY, THICKNESS, ADHESION AND CRACKING OF ZINC COATINGS ON COMMERCIALLY GALVANISED PRESTRESSING WIRES AND REINFORCING STEEL MATS WAS EXAMINED. BASIC MECHANICAL COEFFICIENTS WERE DETERMINED ON NON-GALVANISED AND GALVANISED STEELS TO CHECK WHETHER THE STEELS SATISFY THE CONDITIONS OF THE STANDARD. RESULTS SHOWED THAT GALVANISING PRODUCES GOOD QUALITY PRESTRESSING STEELS, BUT THAT THE GALVANISATION OF THE REINFORCING STEEL MATS IS LESS SATISFACTORY BECAUSE OF THE NON-UNIFORM THICKNESS OF THE COATING. DUE TO THE EFFECT OF THE HEAT DURING GALVANISATION, STRENGTH VALUES OF THE PRESTRESSING STEELS ARE SOMEWHAT DIMINISHED; FATIGUE BEHAVIOUR IS EQUALLY GOOD OR BETTER WITH GALVANISED MATERIAL AND RELAXATION BEHAVIOUR REMAINS THE SAME. SIMILAR RESULTS WERE OBTAINED WITH THE REINFORCING STEEL MATS; IN SOME CASES THERE WERE EVEN MORE FAVOURABLE COMBINATIONS OF STRENGTH AND DEFORMATION BEHAVIOUR. THE SHEAR BEHAVIOUR OF WELDED JOINTS IS UNAFFECTED BY GALVANISING, AND FATIGUE BEHAVIOUR IS CONSIDERABLY BETTER.
Language
- German
Project
- Status: Completed
-
Sponsor Organizations:
GEMEINSCHAFTSAUSSCHUSS VERZINKEN E.V. (GERMAN ASSOCIATION FOR RESEARCH AND DEVELOPMENT ON HOT DIP GALVANIZING)
BEETHOVENSTR. 12
DUESSELDORF, Germany D-4000ARBEITSGEMEINSCHAFT INDUSTRIELLER FORSCHUNGSVEREINIGUNGEN E. V. (WORKING COMMITTEE OF INDUSTRIAL RESEARCH ASSOCIATIONS)
BAYENTHALGUERTEL 23
KOELN, Germany D-5000 -
Project Managers:
-,
-
Performing Organizations:
STUTTGART UNIV. (TH), AMTLICHE FORSCHUNGS- UND MATERIALPRUEFUNGSANSTALT FUER DAS BAUWESEN (OTTO-GRAF-INST.) (STUTTGART TECHNICAL UNIV., OFFICIAL RESEARCH AND TESTING LAB. FOR BUILDING MATERIALS (OTTO-GRAF-INST.))
PFAFFENWALDRING 4
STUTTGART, Germany D-7000 - Start Date: 0
- Expected Completion Date: 0
- Actual Completion Date: 0
- Source Data: ITRD D701359
Subject/Index Terms
- TRT Terms: Behavior; Deformation; Fire; Heat; High strength; Mechanical relaxation; Properties of materials; Research projects; Seal coats; Shear strength; Steel; Strength of materials; Tests; Welding; Zinc
- ITRD Terms: 9001: Behaviour; 5595: Deformation; 1624: Fire; 6743: Heat; 5537: High strength; 5925: Properties; 5407: Relaxation (mech); 8557: Research project; 2973: Sealing coat (on top of the surfacing); 5531: Shear; 4542: Steel; 5544: Strength (mater); 6255: Test; 3852: Welding; WEST GERMANY ; 7189: Zinc
- Subject Areas: Materials; Research; I34: Steels and Metals;
Filing Info
- Accession Number: 01300257
- Record Type: Research project
- Source Agency: Bundesanstalt für Straßenwesen (BASt)
- Files: ITRD
- Created Date: Nov 21 2010 7:46AM