| 半刚性基层温度收缩机理分析 |
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| 引用本文： | 李运涛.半刚性基层温度收缩机理分析[J].价值工程,2012,31(28):115-117. |
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| 作者姓名： | 李运涛 |
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| 作者单位： | 开封市通达公路工程有限公司,开封,475004 |
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| 摘 要： | 半刚性基层材料是由固相(矿物颗粒、颗粒之间的胶结物)、液相(水溶液)和气相(气体)组成的,其温度收缩主要由固相、液相引起的,其中液相的水是通过"扩张作用"、"毛细管张力作用"和"冰冻作用"三个作用过程对半刚性基层材料的热胀缩性产生影响,而且半刚性基层材料温缩性主要受组成材料的矿物成分、含水量、最大干密度、空隙率、龄期、结构强度等的影响。
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| 关 键 词： | 半刚性基层 温度收缩 机理 胀缩性 固相 液相 |
The Analysis of the Temperature Shrinkage Mechanism of Semi-rigid Base |
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| LI Yun-tao.The Analysis of the Temperature Shrinkage Mechanism of Semi-rigid Base[J].Value Engineering,2012,31(28):115-117. |
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| Authors: | LI Yun-tao |
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| Institution: | LI Yun-tao(Kaifeng Tongda Highway Engineering Co.,Ltd.,Kaifeng 475004,China) |
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| Abstract: | Semi-rigid base material is formed by solid-state(mineral particle,cement between particles),liquid(aqueous solution),gas phase(gas).Temperature shrinkage is mainly caused by solid-state and liquid.Liquid water influences hot swell-shrink characteristics of semi-rigid base material through 3 processes: expansion effect,capillary tension effect,frost effect.And the temperature shrinkage of semirigid base material is influenced by the mineral composition of composed material,water content,maximum dry density,porosity,age,structural strength and so on. |
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| Keywords: | semi-rigid base temperature shrinkage mechanism swell-shrink characteristics solid-state liquid |
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