| SMA混合料级配参数特征研究 |
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| 引用本文： | 何壮彬.SMA混合料级配参数特征研究[J].西部交通科技,2013(11):1-4. |
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| 作者姓名： | 何壮彬 |
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| 作者单位： | 广西交通职业技术学院,广西南宁530023 |
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| 基金项目： | 2011年广西交通科技项目（桂交科教发[2011]54-19号）;2011年广西自然科学基金项目（编号：2011GXNSFA018040）;2013年广西高校科研项目（编号：2013YB309） |
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| 摘 要： | 为研究SMA混合料在我国推广运用以来的级配变化情况及发展演变趋势,文章收集并分析了我国各地工程所使用的SMA16、SMA13混合料级配,并运用粗集料的粗比值、中位直径、频率直径及颗粒群均匀度等指标,对SMA混合料级配的粗细程度及其粒度均匀性进行分析评价.结果表明：SMA混合料级配逐渐变粗了,而且加大了粗集料中的大骨料用量,提高了SMA高温稳定性,级配均匀性逐渐下降,改善了施工和易性.
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| 关 键 词： | SMA沥青混合料 级配变化 粗细水平 颗粒均匀度 |
Studies on the Characteristics of SMA Mixture Gradation Parameters |
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| Institution: | HE Zhuang- bin (Guangxi Vocational and Technical College of Communications, Nanning, Guangxi, 530023) |
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| Abstract: | To study the gradation changes and evolution trends of SMA mixture since its pro- motion and application in China,this article collected and analyzed the SMA16 and SMA13 mixture gradation used in the engineering all over the country, and used the CA ratio,medi- an diameter, frequency diameter, particle group evenness and other indicators of coarse aggregate to analy-,~e and evaluate the thickness level of SMA mixture gradation and its par- ticle evenness. The results showed that： $MA mixture gradation became gradually coarser, the large aggregate consumption increased in coarse aggregates, the high-temperature stability of SMA was improved, and the grading evenness gradually decreased, which irn- proved the workability. |
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| Keywords: | SMA asphalt mixture Gradation changes Thickness level Particle evenness |
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