THE BENDING TENSILE STRENGTH OF ROAD CONCRETE
ZUR BIEGEZUGFESTIGKEIT VON STRASSENBETON
THE PAPER DEALS WITH INVESTIGATIONS INTO THE MINIMUM PERIOD OF TIME AFTER WHICH NEW CONCRETE PAVEMENTS MAY BE OPENED TO TRAFFIC, WHEN THE RESISTANCE TO TENSILE BENDING STRESS HAS REACHED THE VALUE OF 34 KP/CM2. THE INVESTIGATIONS WERE PROMPTED BY THE FACT THAT EARLY FAILURE OF CONCRETE PAVEMENTS USUALLY OCCURS DUE TO EXCESSIVE TENSILE BENDING STRESSES. COMPARISON BETWEEN TEST BEAMS CAST IN THE NORMAL SLAB FORMS UNDER SITE CONDITIONS AND PLATE SPECIMENS SHOWED THAT THE LATTER HAD HIGHER SETTING TEMPERATURES, I.E. THAT THEY WERE WARMED BY HEAT OF HYDRATION. TESTS WITH DIFFERENT CURING TEMPERATURES AND WITH CEMENTS OF LOWER STANDARD STRENGTHS SHOWED CORRESPONDING INCREASES IN RESISTANCE TO TENSILE BENDING STRESS. THE RESULTING DIAGRAMS FACILITATE THE DETERMINATION OF AVERAGE TENSILE BENDING STRENGTH IN CONCRETE SLABS, AS WELL AS THE PREDICTED TENSILE BENDING STRENGTH AT A GIVEN TIME (E.G. AFTER 4 DAYS), AND ALSO THE ESTIMATION OF THE TIME REQUIRED FOR CONCRETE TO ATTAIN A SPECIFIED TENSILE BENDING STRENGTH.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00392200
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Authors:
- Kaltenboeck, H
- Publication Date: 1975
Language
- German
Media Info
- Pagination: 14-5
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Serial:
- STRASSENBAU-TECH
- Volume: 28
- Issue Number: 22
- ISSN: 0039-2200
Subject/Index Terms
- TRT Terms: Concrete; Concrete hardening; Deflection; Failure; Plan implementation; Rigid pavements; Strength of materials; Temperature; Tension; Time
- ITRD Terms: 4755: Concrete; 5586: Deflection; 5520: Failure; 4722: Hardening; 1104: Opening (road, transp line); 2964: Rigid pavement; 5544: Strength (mater); 6722: Temperature; 5502: Tension; 5414: Time
- Subject Areas: I32: Concrete; I52: Construction of Pavements and Surfacings;
Filing Info
- Accession Number: 01302830
- Record Type: Publication
- Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
- Files: ITRD
- Created Date: Nov 21 2010 8:49AM