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煤直接液化残渣改性沥青胶浆性能研究

季节 徐新强 许鹰 王哲 王佳妮

季节, 徐新强, 许鹰, 王哲, 王佳妮. 煤直接液化残渣改性沥青胶浆性能研究[J]. 燃料化学学报.
引用本文: 季节, 徐新强, 许鹰, 王哲, 王佳妮. 煤直接液化残渣改性沥青胶浆性能研究[J]. 燃料化学学报.
JI Jie, XU Xin-qiang, XU Ying, WANG Zhe, WANG Jia-ni. Research on performance of direct coal liquefaction residue modified asphalt mortar[J]. Journal of Fuel Chemistry and Technology.
Citation: JI Jie, XU Xin-qiang, XU Ying, WANG Zhe, WANG Jia-ni. Research on performance of direct coal liquefaction residue modified asphalt mortar[J]. Journal of Fuel Chemistry and Technology.

煤直接液化残渣改性沥青胶浆性能研究

基金项目: 国家自然科学基金(51778038;52078025),北京市自然基金委-北京市教委联合资助项目(KZ201910016017),中国公路工程咨询集团有限公司开放性课题(YFZX-2019-06),长江学者和创新团队发展计划资助项目(IRT-17R06)
详细信息
    通讯作者:

    E-mail: jijie@bucea.edu.cn

  • 中图分类号: U414

Research on performance of direct coal liquefaction residue modified asphalt mortar

Funds: The project was supported by the National Natural Science Foundation of China (51778038 and 52078025), Beijing Natural Science Foundation Committee-Beijing Municipal Education Commission (KZ201910016017), China Highway Engineering Consulting Corporation (YFZX-2019-06), Program for Changjiang Scholars and Innovative Research Team in University (IRT-17R06)
  • 摘要: 为了研究煤直接液化残渣(Direct Coal Liquefaction Residue,DCLR)改性沥青胶浆的性能,制备不同DCLR掺量和粉胶比(Filler-Asphalt ratio, FA)的DCLR改性沥青胶浆。采用动态剪切流变仪与弯曲梁流变仪对胶浆的性能进行测试,并利用方差分析法分析了单一因素(DCLR掺量、温度、FA)及因素间耦合作用对胶浆性能的影响。结果表明:DCLR和矿粉的加入均能显著提高胶浆的高温性能,但对其低温及疲劳性能会造成较大的损伤。平衡DCLR掺量和FA对胶浆性能的综合影响,得出最佳DCLR掺量为10%,最佳FA为1.0。除此之外,单一因素(DCLR掺量、温度、FA)及因素间耦合作用对胶浆的性能均有着显著的影响,相对来说,因素间耦合作用对胶浆性能的影响要远小于单一因素对胶浆性能造成的影响。
  • 图  1  DCLR改性沥青胶浆制备流程

    Figure  1.  Preparation process of DCLR modified asphalt mortar

    图  2  不同温度下胶浆${G^*}/{\rm{sin}}\delta $值随粉胶比和DCLR掺量的变化

    Figure  2.  ${G^*}/{\rm{sin}}\delta $ value of asphalt mortar varies with FA and DCLR content at different temperatures

    图  3  不同温度下胶浆$m - $值和$S$值随粉胶比和DCLR掺量的变化

    Figure  3.  $m - $value and $S$value of asphalt mortar varies with FA and DCLR content at different temperatures

    图  4  不同DCLR掺量下胶浆${G^*} \cdot {\rm{sin}}\delta $值随粉胶比和温度的变化

    Figure  4.  ${G^*} \cdot {\rm{sin}}\delta $ value of asphalt mortar varies with FA and temperatures at different DCLR content

    图  5  典型温度下胶浆${G^*}/{\rm{sin}}\delta $值在RTFOT前后的变化

    Figure  5.  Change of ${G^*}/{\rm{sin}}\delta $ value at typical temperature before and after RTFOT

    图  6  DCLR改性沥青胶浆高温域临界破坏温度

    Figure  6.  Critical failure temperature of DCLR modified asphalt mortar at high temperature domain

    图  7  DCLR改性沥青胶浆低温域临界破坏温度

    Figure  7.  Critical failure temperature of DCLR modified asphalt mortar at temperature domain

    图  8  DCLR改性沥青胶浆中温域临界破坏温度

    Figure  8.  Critical failure temperature of DCLR modified asphalt mortar at medium temperature domain

    图  9  DCLR改性沥青胶浆性能指标方差分析F值

    Figure  9.  F value of variance analysis of DCLR modified asphalt mortar performance index

    表  1  DCLR性能

    Table  1.   Properties of DCLR

    Items25 °C density
    (g/cm3)
    Softening point
    (°C)
    25 °C penetration
    (0.1 mm)
    10 °C ductility
    (cm)
    Ash content
    (%)
    Test results1.231702216.2
    下载: 导出CSV

    表  2  SK-90沥青性能

    Table  2.   Properties of SK-90 asphalt

    Items25 °C penetration
    (0.1 mm)
    Softening point
    (°C)
    10 °C ductility
    (cm)
    60 °C viscosity
    (Pa·s)
    25 °C density
    (g/cm3)
    Residue after RTFOT
    Loss of
    mass(%)
    Residual
    penetration
    ratio(%)
    Residual
    ductility(cm)
    Test results8151.851218.41.032 ± 0.3646.5
    Requirements60~80 ≥ 46 ≥ 20 ≥ 180 ± 0.8 ≥ 61 ≥ 6
    下载: 导出CSV

    表  3  矿粉性能

    Table  3.   Properties of filler

    ItemsApparent density
    (g/cm3)
    Water content
    (%)
    Hydrophilic
    coefficient
    Plasticity
    Index(%)
    Granularity range(%)
    < 0.6 mm < 0.15 mm < 0.075 mm
    Test results2.7320.50.712.810099.7588.56
    Requirements ≥ 2.5 ≤ 1 ≤ 1 ≤ 410090~10075~100
    下载: 导出CSV

    表  4  DCLR的环保性指标

    Table  4.   Environmental properties of DCLR

    ItemspHContent of reactive hydrogen
    sulfide gas(mg/kg)
    The mass concentration of hazard components in leach solution (mg/L)
    non-volatility organic compounds:
    benzopyrene, etc.
    volatile organic compounds:
    benzene, toluene, etc.
    Test results6.92336 < 1 × 10−4 < 1 × 10−3
    Requirements6~8 ≤ 500 ≤ 0.01 ≤ 0.1
    下载: 导出CSV

    表  5  DCLR改性沥青胶浆性能指标方差分析P值

    Table  5.   P value of variance analysis of DCLR modified asphalt mortar performance index

    FactorP-value
    ${G^*}/{\rm{sin}}\delta $
    Before
    RTFOT
    ${G^*}/{\rm{sin}}\delta $
    After
    RTFOT
    $m - $valueS${G^*} \cdot {\rm{sin}}\delta $
    Temperature0.0000.0000.0000.0000.000
    DCLR content0.0000.0000.0000.0000.000
    FA0.0000.0000.0000.0000.000
    Temperature*DCLR
    content
    0.0000.0000.0000.0020.000
    Temperature*FA0.0000.0000.0000.0000.000
    DCLR content*FA0.0010.0040.0160.0000.000
    下载: 导出CSV
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  • 网络出版日期:  2021-03-09

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