| 排水基层多孔混凝土的物理力学性质 |
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| 引用本文： | 孙家伟,王崇涛,郑木莲,王秉纲. 排水基层多孔混凝土的物理力学性质[J]. 公路, 2006, 0(8) |
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| 作者姓名： | 孙家伟 王崇涛 郑木莲 王秉纲 |
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| 作者单位： | 广东西部沿海高速公路珠海段有限公司，长安大学特殊地区公路工程教育部重点实验室，长安大学特殊地区公路工程教育部重点实验室，长安大学特殊地区公路工程教育部重点实验室 中山市528467，西安市710064，中交第一公路勘察设计研究院西安市710075，西安市710064，西安市710064 |
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| 基金项目： | 陕西省自然科学基础研究计划资助项目(2005E207)，长安大学科技发展基金项目(05Q03) |
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| 摘 要： | 多孔混凝土作为路面的基层,应具有良好的物理性质和力学性质,前者主要指其排水、收缩及抗冲刷等性能,后者主要指其强度和应力-应变特性。通过试验与分析,给出多孔混凝土有效空隙率和全空隙率,及渗透系数与空隙率的关系;得出多孔混凝土强度随龄期的发展规律,弯拉强度、劈裂强度与抗压强度的相关关系,抗压强度与空隙率的关系以及两种形式下的双对数疲劳方程;提出多孔混凝土弯拉弹性模量与弯拉强度,以及抗压弹性模量与轴心抗压强度的关系;得出多孔混凝土的温缩系数和干缩系数。
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| 关 键 词： | 道路工程 多孔混凝土 空隙率 渗透系数 强度 疲劳方程 模量 |
Physical and Mechanical Performance of Porous Concrete for Drainage Base |
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| SUN Jia-wei. Physical and Mechanical Performance of Porous Concrete for Drainage Base[J]. Highway, 2006, 0(8) |
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| Authors: | SUN Jia-wei |
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| Affiliation: | SUN Jia-wei~ |
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| Abstract: | As base course material,porous concrete should has good physical and mechanical performance,and the former refers to the characters of drainage,shrinkage,anti-erosion and etc.,while the latter refers to the characters of strength and stress-strain.According to tests and analysis,the relationship of effective porosity and total porosity,permeability coefficient and porosity of porous concrete are adduced.The strength development with time,relationships between flexural tensile strength,split strength and compression strength,the relationship between compression and porosity,and two types of double logarithm fatigue equation of porous concrete are got.The relationships between flexural tensile elastic module and flexural tensile strength,compression elastic module and compression strength of porous concrete are drawn.Last,the temperature contraction coefficient and dry shrinkage coefficient of porous concrete are advanced. |
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| Keywords: | road engineering porous concrete porosity permeability coefficient strength fatigue equation modulus |
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