Effect of hydrated lime an long-term oxidative aging characteristics of asphalt

被引：0
|
作者：
Huang, SC [1 ]
Petersen, JC [1 ]
Robertson, RE [1 ]
Branthaver, JF [1 ]
机构：
[1] Western Res Inst, Laramie, WY 82072 USA
来源：
BITUMINOUS BINDERS 2002: MATERIALS AND CONSTRUCTION | 2002年 / 1810期
关键词：
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experiment involving neat asphalts AAD-1, ABD, and their mixtures with two different grades of hydrated lime was conducted to investigate the effect of lime on the long-term aging characteristics of asphalt binders. Rheological properties of unaged and aged asphalt-lime mixtures were measured with a dynamic shear rheometer at 25degreesC (77degreesF) and 60degreesC (140degreesF). The addition of hydrated lime to one asphalt (AAD-1) effectively reduced oxidative age hardening. In addition, the phase angle reached the same value as aging time reached after approximately 800 h at 60degreesC in the pressure-aging vessel for AAD-1 and its mixtures with lime. After 800 h of aging, the phase angle was greater for the lime-treated asphalt than for the untreated asphalt, and it continued to decrease at a slower rate. This result indicates that the addition of lime
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页码：17 / 24
页数：8
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