RHEOLOGICAL PROPERTIES OF ASPHALTIC CONCRETE AT TEMPERATURES BELOW FREEZING POINT /IN RUSSIAN/
RESULTS OF THE EXPERIMENTAL STUDY OF STRESS RELAXATION IN ASPHALTIC CONCRETE AT TEMPERATURES BETWEEN + 20 AND - 40 DEGREES C ARE PRESENTED. THE TEST METHOD IS DESCRIBED. THE INVESTIGATION WAS CARRIED OUT WITH A TEST MACHINE DEVELOPED IN THE USSR, THE MRS-250, WHICH CONSISTS OF A MECHANICAL PRESS, FOR THE LOADING OF SAMPLES AT A GIVEN DEFORMATION RATE. THE CHARACTERISTICS OF THE TEST AND STRESS RELAXATION WERE RECORDED BY MEANS OF "LOAD-TIME" COORDINATES. STRESS RELAXATION WAS DETERMINED FOR ASPHALTIC CONCRETE CONTAINING BITUMEN BN-0 AND BN-2. IT WAS SHOWN DURING TESTS ON ASPHALTIC CONCRETE AT TEMPERATURES BETWEEN - 20 AND - 30 DEGREES C THAT THE FOLLOWING QUALITATIVE MODIFICATIONS OCCUR: (1) RELAXATION TAKES PLACE VERY SLOWLY, (2) THE LINEAR THERMAL EXPANSION COEFFICIENT DECREASES, (3) FOR ASPHALTIC CONCRETE WITH BITUMEN BN-0 AND BN-2, THE LOAD- DEFORMATION RELATION IS PRACTICALLY LINEAR, AND (4) ASPHALTIC CONCRETE IS SUBJECT TO BRITTLE FRACTURE. /LCPC/RRL/
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Supplemental Notes:
- No 11, pp 107-113, 7 FIG, 2 REF
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Authors:
- Kazarnovskaya, E A
- Publication Date: 1967
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Asphalt concrete; Fracture mechanics; Freezing; Mechanical relaxation; Rheological properties; Testing
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211228
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: Aug 1 1971 12:00AM