Adhesion Between Asphalt Modified with Natural Asphalt and AggregateBased on Photoelectric Colorimetric Method

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Adhesion Between Asphalt Modified with Natural Asphalt and AggregateBased on Photoelectric Colorimetric Method

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[1]MA Feng,FU Zhi-peng,FU Zhen,et al.Adhesion Between Asphalt Modified with Natural Asphalt and AggregateBased on Photoelectric Colorimetric Method[J].Journal of Zhengzhou University (Engineering Science),2015,36(03):77-81.[doi:10.3969/j.issn.1671-6833.2015.03.017]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 36 Number of periods: 2015 03 Page number: 77-81 Column: Public date: 2015-06-30

Title:: Adhesion Between Asphalt Modified with Natural Asphalt and AggregateBased on Photoelectric Colorimetric Method

Author(s):: MA Feng1; FU Zhi-peng1; FU Zhen3; CHEN Bin-hua1; 1.School of Highway ,Chang’an University，Xian 710064，China;2.CCCC First Highway Consultant Co. , L.d; 3. School ofMaterials Science and Engineering , Chang’an University ，Xian 710064 , China

Keywords:: road engineering; natural asphalt; aggregate; photoelectric colorimetric method; adhesion

CLC:: U416.217

DOI:: 10.3969/j.issn.1671-6833.2015.03.017

Abstract:: In order to know the adhesion between natural asphalt and aggregate,two types of base asphalts andthree kinds of typical aggregates were selected.The adhesion between asphalt and aggregate were tested usingphotoelectric colorimetric method with dfferent doses of natural asphalt into base asphalt.The test results werecompared with that of boiling method. And the relation between adhesion rate and adhesion level was estab-lished. Meanwhile water stability of asphalt mixture through immersion Marshall test and freeze-thaw splittingtest were studied.Test results indicate that asphalt-aggregate adhesion can be analyzed quantitatively by photo-electric colorimetric method,and the optimal dosage of natural bitumen can be determined more accuratelyfrom the standpoint of adhesion.The adhesion may be improved significantly after base asphalt mixed with nat-ural asphalt.But the improving degree is different with different base asphalt and aggregate.The test results ofboiling method,immersion Marshall test and freeze-thaw splitting test verified the reliability of photoelectriccolorimetric method.

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