| Research on Adaptability of Semi?rigid Material as Base Course for Long-life Asphalt Pavement |
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| 引用本文： | 平树江,蒋亮,申爱琴,刘晓光.Research on Adaptability of Semi?rigid Material as Base Course for Long-life Asphalt Pavement[J].公路交通科技,2010,4(2):11-14. |
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| 作者姓名： | 平树江 蒋亮 申爱琴 刘晓光 |
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| 作者单位： | 1 Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'anShaanxi710064,China;
2 Binzhou Highway Administration Bureau,BinzhouShandong256614,China;
3 Tangshan Municipal Communications Bureau,TangshanHebei063000,China;
4 Zouping City Constructing Synthetic Development Co,Ltd,ZoupingShandong 256200,China |
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| 摘 要： | In the light of semi?rigid material as base course for perpetual asphalt pavement,the bearing capacity and fatigue life of asphalt pavement with semi-rigid base cause and different asphalt layer's thickness were computed with BISAR30 after chosen typical pavement The impact of thickened layer on the stress of the semi?rigid base,the dry shrinkage and temperature shrinkages of the material were analyzed,and its adaptability as base for perpetual pavement was studied The result shows that (1) under the same load,with thickening of the asphalt layer,the compressive stress on the top and the tensile stress at the bottom of the semi?rigid base decrease obviously and the fatigue life of
the base increases substantially; (2)the impact of temperature and humidity on the
semi-rigid base is remarkably weakened,which leads to the fractures,erosion and reflecting cracks of the semi?rigid base to be controlled effectively
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| 关 键 词： | road engineering semi?rigid base crack fatigue damage long life adaptability |
| 收稿时间： | 2008-03-25 |
Research on Adaptability of Semi?rigid Material as Base Course for Long-life Asphalt Pavement |
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| PING Shujiang,JIANG Liang,SHEN Aiqin,LIU Xiaoguang.Research on Adaptability of Semi?rigid Material as Base Course for Long-life Asphalt Pavement[J].Journal of Highway and Transportation Research and Development,2010,4(2):11-14. |
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| Authors: | PING Shujiang JIANG Liang SHEN Aiqin LIU Xiaoguang |
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| Institution: | 1 Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'anShaanxi710064,China;
2 Binzhou Highway Administration Bureau,BinzhouShandong256614,China; |
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| Abstract: | In the light of semi?rigid material as base course for perpetual asphalt pavement,the bearing capacity and fatigue life of asphalt pavement with semi-rigid base cause and different asphalt layer's thickness were computed with BISAR30 after chosen typical pavement The impact of thickened layer on the stress of the semi?rigid base,the dry shrinkage and temperature shrinkages of the material were analyzed,and its adaptability as base for perpetual pavement was studied The result shows that (1) under the same load,with thickening of the asphalt layer,the compressive stress on the top and the tensile stress at the bottom of the semi?rigid base decrease obviously and the fatigue life of
the base increases substantially; (2)the impact of temperature and humidity on the
semi-rigid base is remarkably weakened,which leads to the fractures,erosion and reflecting cracks of the semi?rigid base to be controlled effectively |
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| Keywords: | road engineering semi?rigid base crack fatigue damage long life adaptability |
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