DSC Analysis on Asphalt and Asphalt Fractions

doi:10.3969 /j.issn.1674-0696.2013.02.08

Abstract

Abstract: Asphalt fraction analysis and DSC ( Differential Scanning Calorimetry) instrument were adopted to analyze the property of the asphalt from the microscopic． ESSO 90 # matrix asphalt and RTFO ( Rotary Film Oven) / PAV ( Pressure Aging) matrix asphalt were selected，and the asphalt four fractions ( asphaltene，saturates，aromatics，colloid) were studied during the test． The results show that: DSC can better describe internal phase state of asphalt changing with temperature，and remain consistent with the three major asphalt macro indicators; asphaltene and colloid affect the high temperature performance of asphalt． Saturates and aromatics affect the low temperature performance of asphalt; saturates has an significant impaction on asphalt property．

Key words: asphalt fraction, differential scanning calorimetry ( DSC) , aging

摘要： 采用沥青组分分析法和差示扫描量热仪( DSC) 从微观上分析沥青的性质。试验选取ESSO 90 # 基质沥青及RTFO( 旋转薄膜烘箱) /PAV( 压力老化) 基质沥青，研究了沥青的沥青质、饱和分、芳香分和胶质四组分。结果表明:DSC 能较好的描述沥青内部相态随温度的变化，并与沥青宏观上的三大指标保持一致; 沥青质、胶质对沥青的高温性能有影响，饱和分、芳香分对沥青的低温性能有影响; 饱和分对沥青性质的影响很大。

关键词: 沥青组分, 差示扫描量热仪, 老化

CLC Number:

U414

Chen Huaxin，He Mengshuang，Li Yuanyuan，Yan He. DSC Analysis on Asphalt and Asphalt Fractions[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(2): 207-0210.

陈华鑫，贺孟霜，李媛媛，颜赫. 沥青与沥青组分的差示扫描量热研究[J]. 重庆交通大学学报（自然科学版）, 2013, 32(2): 207-0210.

References

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