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首页> 外文会议>International conference on transportation engineering;ICTE 2011 >HIGH-TEMPERATURE BEHAVIOR OF COMPOUND CRUMB RUBBER MODIFIED ASPHALT
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HIGH-TEMPERATURE BEHAVIOR OF COMPOUND CRUMB RUBBER MODIFIED ASPHALT

机译：复合橡胶改性沥青的高温行为。

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摘要

The compound crumb rubber modified asphalt(CCRMA) was obtained by adding some amount of waste tire crumb rubber and SBS into base asphalt. The rheological characterization in high temperature and micro-structure of CCRMA was studied by using Dynamic Shear Rheometer (DSR) over wide range of temperatures and Scanning Electron Microscopy (SEM) and Thermogravimetric Analysis (TG). It was found that the network structure of rubber power can adsorb asphalt commendably, so that the heteropolymer-structure was formed in the modified aspha the decompose temperature of CCRMA was delayed and the thermal stability improved; the viscidity proportion of CCRMA was increased with temperature rising, but there always existed certain elasticity in CCRMA at 30~50°C to get better rutting resistant; the viscid-elastic parameter of Burgers model was fitted by the result of DSR, all those can provide theoretic foundation for CCRMA using in north region.
机译：通过在基础沥青中加入一定量的废轮胎废橡胶和SBS，可以得到复合橡胶碎料改性沥青（CCRMA）。通过使用动态剪切流变仪（DSR）在较宽的温度范围内以及扫描电子显微镜（SEM）和热重分析（TG），研究了CCRMA在高温下的流变特性。发现橡胶粉的网络结构可以很好地吸附沥青，从而在改性沥青中形成杂聚物结构。延缓了CCRMA的分解温度，提高了热稳定性。 CCRMA的粘度比随温度的升高而增加，但在30〜50°C时，CCRMA总是具有一定的弹性，以获得更好的抗车辙性。 DSR结果拟合了Burgers模型的粘弹性参数，为北部地区CCRMA的应用提供了理论基础。

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