| 水泥稳定碎石用硬质砂岩关键性指标 |
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| 引用本文： | 丛卓红,闫红光,郑南翔.水泥稳定碎石用硬质砂岩关键性指标[J].长安大学学报(自然科学版),2011(5). |
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| 作者姓名： | 丛卓红 闫红光 郑南翔 |
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| 作者单位： | 长安大学道路施工技术与装备教育部重点实验室;四川广南高速公路有限责任公司;长安大学特殊地区公路工程教育部重点实验室; |
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| 基金项目： | 四川省交通科技项目(2006A16-43) |
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| 摘 要： | 针对硬质砂岩在半刚性基层中应用缺乏相关技术标准,造成就地取材技术上的困难,采用Pearson简单相关系数分析路用性能指标与原材料技术指标的相关系数,根据相关系数的排序,给出了硬质砂岩用于水泥稳定碎石基层的关键性质量控制指标,即坚固性试验后集料压碎值、岩石饱水抗压强度、集料压碎值、坚固性试验后岩石饱水抗压强度和吸水率5个指标。坚固性试验是评价砂岩质量的重要条件试验,在进行该试验时,可同时测定材料的坚固性质量损失率,也可作为原材料质量的控制标准。结果表明,硬质砂岩的强度与耐久性是影响水泥稳定碎石混合料路用性能的关键因素。
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| 关 键 词： | 道路工程 水泥稳定碎石 硬质沙岩 Pearson简单相关系数 坚固性试验 强度 耐久性 |
Key technical indexes about hard sandstone in cement stabilized aggregate mixture |
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| CONG Zhuo-hong,YAN Hong-guang,ZHENG Nan-xiang.Key technical indexes about hard sandstone in cement stabilized aggregate mixture[J].JOurnal of Chang’an University:Natural Science Edition,2011(5). |
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| Authors: | CONG Zhuo-hong YAN Hong-guang ZHENG Nan-xiang |
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| Institution: | CONG Zhuo-hong1,YAN Hong-guang2,ZHENG Nan-xiang3(1.Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China,2.Sichuan Guangnan Expressway Co Ltd,Chengdu 610041,Sichuan,3.Key Laboratory for Special Area Highway Engineering of Ministry of Education,China) |
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| Abstract: | Aimed at the deficiency of aggregate technical standards in semi-rigid base specification,the local hard sandstone materials are difficult to be used in expressway.According to the Pearson simple correlation coefficient between the mixture's pavement performance indexes and the raw material's indexes,the critical quality indexes of hard sandstone have five kinds,such as crushed stone value after ruggedness test,rock saturated compressive strength,crushed stone value,rock saturated compressive strength after... |
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| Keywords: | road engineering cement stabilized aggregate mixture hard stone Pearson simple correlation coefficient ruggedness test strength durability |
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