研究了聚丙烯纤维和微膨胀复合对混凝土抗折强度、抗渗性和收缩变形的影响。
The influence of compounding polypropylene fiber and expansion on flexure strength, impermeability and the shrinkage deformation is studied.
水份从阴极附近通过沉积过程排斥出来，引起涂膜脱水，这种涂膜已具有抗物理变形性。
Water is driven from the vicinity of the cathode through the deposited film, causing the dehydration of the film. Such a film is relatively resistant to physical distortion.
继而从新的思路，以扩径作为薄壁管的变形方式进行抗撞性研究。
With new research ideas, thin-walled tube occur plastic deformation by expanding to achieve the purpose of energy absorption.
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