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Effect of surface active agents on the rheological properties and solubility of layered double hydroxides-modified asphalt

机译:表面活性剂对层状双氢氧化物改性沥青流变性能和溶解度的影响

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摘要

Layered double hydroxides ( LDHs) modified asphalt is a typical solid-liquid mixture that is concentrated suspensions of solid particles in solutions. The influence of dodecyl benzenesulfonic acid (DBSA) and polyvinyl alcohol (PVA) on the rheological properties and solubility of LDHs modified asphalt (LMA) were investigated by dynamic shear rheometer, molecular dynamic simulations and optical microscopy. Research results indicated that the addition of DBSA or PVA to LDHs modified asphalt resulted in enhancement of the cracking resistance, stress relaxation and creep behavior at lower temperature. The solubility parameters of surface active agent and LMA showed that PVA and DBSA can contribute to the solution of LDHs in asphalt. The effect of PVA was better than DBSA. The morphology of LMA implied that the distribution of LDHs was uniform when 0.5wt-% DBSA or PVA were added and increasing DBSA contents under certain levels increased the uniformity of LDHs..
机译:层状双氢氧化物(LDH)改性沥青是一种典型的固液混合物,是固体颗粒在溶液中的浓缩悬浮液。通过动态剪切流变仪,分子动力学模拟和光学显微镜研究了十二烷基苯磺酸(DBSA)和聚乙烯醇(PVA)对LDHs改性沥青(LMA)的流变性能和溶解度的影响。研究结果表明,在LDHs改性沥青中添加DBSA或PVA可以提高低温下的抗裂性,应力松弛和蠕变性能。表面活性剂和LMA的溶解度参数表明,PVA和DBSA可以促进LDHs在沥青中的溶解。 PVA的效果优于DBSA。 LMA的形态表明,当添加0.5wt%的DBSA或PVA时,LDHs的分布是均匀的,在一定水平下增加DBSA的含量会增加LDHs的均匀性。

著录项

  • 来源
    《Materials Research Innovations》 |2015年第5期|S5.978-S5.982|共5页
  • 作者单位

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface active agent; Rheological properties; Solubility; LDHs; Modified asphalt;

    机译:表面活性剂;流变性能;溶解度;LDHs;改性沥青;

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