| 不同标号沥青SHRP试验对比分析研究 |
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| 引用本文： | 葛琳延.不同标号沥青SHRP试验对比分析研究[J].河南科学,2008,26(11). |
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| 作者姓名： | 葛琳延 |
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| 作者单位： | 湖南岳常高速公路开发有限公司,长沙,410016;长沙理工大学,长沙,410016 |
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| 摘 要： | SHRP沥青试验方法以流变学为基础,不同温度范围内有相应的流变仪与之对应.其中使用最普通的有DSR动态剪切流变仪、BBR弯曲梁流变仪和Brookfield旋转粘度计.它们分别用于测定超常温(40～82℃)、低温(-5℃以下)、高温(100℃以上)下改性及非改性沥青的流变指标,且各指标与沥青路用性能有直接关联.通过对中海油泰州牌的3种不同标号的沥青(AH-30#,AH-50#,AH-70#)及其RTFOT残留沥青、PAV残留沥青进行简支梁弯曲试验(BBR)和动态剪切试验(DSR),来对比分析这3种沥青的性能,并最终确定其路用性能等级.
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| 关 键 词： | 沥青SHRP试验 动态剪切流变仪 低标号硬质沥青 抗车辙因子 弯曲梁流变仪 劲度模量 蠕变曲线斜率 |
The Comparative Analysis and Research of SHRP Test on Different Mark Asphalt |
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| Ge Linyan.The Comparative Analysis and Research of SHRP Test on Different Mark Asphalt[J].Henan Science,2008,26(11). |
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| Authors: | Ge Linyan |
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| Institution: | Ge Linyan(1.Hunan Yue-Chang Highway Development Company limited,Changsha 410016,China,2.Science , Technolgy,Changsha University,China) |
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| Abstract: | SHRP asphalt test method is based on the rheologyr,heometer corresponding to different temperature range.The most common using include DSR dynamic shear rheometer,BBR bending beam rheometer and Brookfield Rotary viscometer.They are used to determine the modified and non-modified asphalt flow indicators under super-normal temperature(40 ℃～82 ℃)l,ow temperature(-5 ℃ below),high temperature(100 ℃ above) separately.And it is direct correlation between the various indicators and asphalt pavement performance.Based on simple beam bending test(BBR)and dynamic Shear test(DSR)of three different mark asphalt of CNOOC Taizhou(AH-30#,AH-50#,AH-70#)and RTFOT residual asphalt,PAV asphaltc,ompared their pavement performance and ultimately determine their pavement performance grade. |
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| Keywords: | asphalt SHRP test dynamic shear rheometer low-mark hard asphalt anti-rut factor bending beam rheometer Stiffness modulus creep curve slope |
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