The Effect of Accelerated Aging on the Durability of Rubberized Asphalt |
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Contents
REVIEW OF ACCELERATED AGING TECHNIQUES | 6 |
MATERIALS AND APPARATUS | 19 |
TEST PROCEDURE | 27 |
2 other sections not shown
Common terms and phrases
20 WEATHERING 50 hours 58 too soft 85-100 penetration grade absolute viscosity age hardening aged 5 hours APPENDIX asphalt samples asphaltic material carbon Cornell University decrease determined ductility durability of asphaltic elastomers exposure period film thickness hardening of asphalt INCORPORATION OF RUBBER Increases Increases Increases infrared lamps infrared radiation investigation light sources log absolute temperature log log viscosity log viscosity versus low temperature methods Monismith natural radiation original asphalt Penetration at 77°F penetration grade asphalt penetration retention Penetration values plot of log poises Pyrex radiant energy reactions Rubarite rubber addition RUBBER INTO ASPHALT rubberized asphalt Sample A Sample Sample A slope SAMPLE C 40 shear rate shearing stress sliding plate microviscometer soft too soft softening point solar radiation sunlight susceptibility factor Syneresis temperature susceptibility test results Thixotropy ultraviolet and infrared ultraviolet radiation versus log absolute viscosity versus log viscosity-temperature relationships wave lengths weathering agents weathering apparatus yield point