Evaluation of Low Temperature Performance for Diatomite Modified Asphalt Mixture

Yi Bo Zhang; Hong Zhou Zhu; Guo An Wang; Tuan Jie Chen

doi:10.4028/www.scientific.net/AMR.413.246

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 413Evaluation of Low Temperature Performance for...

Evaluation of Low Temperature Performance for Diatomite Modified Asphalt Mixture

Abstract:

According to the low temperature disease on asphalt pavement in the areas of cold and large temperature difference between day and night, conventional index test and low temperature bending creep test were used to analyze the influence of diatomite dosage on the low temperature performance of diatomite modified asphalt, and the mixture’s low temperature bending test was applied for verification. Test results show that after diatomite’s addition into asphalt, equivalent brittle point reduces significantly, ductility test cannot estimate low temperature performance very well, stiffness modulus increases and relaxation ability decreases; meanwhile, peak value of stiffness modulus and strain energy of asphalt mixture can be found, the low temperature crack resistance is enhanced; optimum dosage of diatomite is 13%. So, the low temperature performance evaluation method of diatomite modified asphalt mixture through BBR’s low temperature performance evaluation on diatomite modified asphalt remains to be discussed.

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Periodical:

Advanced Materials Research (Volume 413)

Pages:

246-251

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.413.246

Citation:

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Online since:

December 2011

Authors:

Yi Bo Zhang, Hong Zhou Zhu, Guo An Wang, Tuan Jie Chen

Keywords:

Asphalt Mixture (AC), BBR, Diatomite, Equivalent Brittle Point, Low Temperature Performance

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