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高温后高强混凝土与轧制钢板黏结剪切强度和摩擦系数
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国家重点基础研究发展计划（973计划）项目（2012CB719703）


Shear Bond Strength and Friction Coefficient between High Strength Concreteand Rolled Steel Plate after Elevated Temperatures Exposure
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    摘要:

    配制了C100高强混凝土，测试了高温后高强混凝土的抗压强度，测试了高温后高强混凝土与轧制钢板间的黏结剪切强度和摩擦系数，并从高温引起混凝土细微观结构损伤演化的角度分析了抗压强度、黏结剪切强度和摩擦系数随温度的变化规律.研究表明：当温度超过400℃后，高强混凝土抗压强度大幅下降；高强混凝土与轧制钢板间的黏结剪切强度随温度的升高而线性降低；高温后高强混凝土间的静、动摩擦系数为0.5～0.6，高强混凝土与轧制钢板间的静、动摩擦系数为0.25～0.35.

    Abstract:

    C100 high strength concrete(HSC) was prepared. Compressive strength of HSC as well as shear bond strength and friction coefficient between HSC and rolled steel plate were tested after the specimens were exposed to elevated temperatures. The variation of compressive strength, shear bond strength and friction coefficient were analyzed from the view points of damage evolution for the meso and micro structure of concrete after exposure in different elevated temperatures. The results show that the compressive strength of HSC drops significantly when the temperature is higher than 400℃. The shear bond strength between HSC and rolled steel plate keeps a linear decrease with increasing temperature. The static and dynamic friction coefficient between HSC and HSC is 0.50.6, while the static and dynamic friction coefficient between HSC and rolled steel plate is 0.250.35.

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肖建庄,赵卫平.高温后高强混凝土与轧制钢板黏结剪切强度和摩擦系数[J].建筑材料学报,2012,(5):697-702

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  • 收稿日期:2011-06-03
  • 最后修改日期:2012-01-20
  • 在线发布日期: 2012-11-07
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