Abstract
Fatigue and creep crack growth experiments in sand asphalt specimens have been performed in four-point beading and center cracked tensile setups. Specimen thickness, frequency, and R values were varied. Most of the tests were constant load experiments, but a constant ΔK experiment was also performed.
It was found that Paris law matches the results. Specimen thickness does not affect the results. Results of tests at different frequencies can be reduced to a single scatter band by plotting da/dt(= f · da/dN) instead of da/dN versus ΔK. Different R values can be brought together by a parabolic crack closure relation. It is concluded that the dominant cause of crack growth in this type of asphalt, under the investigated circumstances, is creep.
Issue Section:
Research Papers
References
1.
Murakami
, Y.
, Stress Intensity Factors Handbook Vol. 1
, Pergamon Press
, Oxford
, 1986
.2.
Paris
, P. C.
and Erdogan
, F.
, Trans. ASME. J. Bas. Eng.
, Vol. 85
, No. 4
, 1963
, pp. 528
-553
.3.
Jacobs
, M. M. J.
, Crack Growth in Asphaltic Mixes
, Thesis Delft University of Technology
, 1995
.4.
Elber
, W.
, ASTM STP 486, American Society for Testing and Materials
, Philadelphia
, 1971
, pp. 230
-242
.5.
6.
Schijve
, J.
, “Four Lectures on Fatigue Crack Growth
,” Delft University of Technology, Department of Aerospace Engineering. Report LR-254, 1977
.7.
Ewalds
, H. L.
, Doorn
, F. C. van
, and Sloof
, W. G.
, ASTM STP 801, American Society for Testing and Materials
, Philadelphia
, 1983
, pp. 115
-134
.
This content is only available via PDF.
All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of ASTM International.
You do not currently have access to this content.
