欧美性爱视频福利网,波多野结衣在线一区二区,国产综合久久久久影院,性感美女一级毛片,国产美女久久,日本乱码视频中文字幕,伊人妞干网

CN
CN
  • 潤強(qiáng)絲?-VI Polyacrylonitrile Fiber
    潤強(qiáng)絲?-VI Polyacrylonitrile Fiber Download

    1565848076396889qH9L.jpg

    RQS ? -Ⅵ is comprised of short, thin fibers, predominantly comprised of Polyacrylonitrile (PAN), with a non-circular section shape made by wet spinning for fiber-reinforced high-performance concrete and mortar. The fiber possesses excellent dispersion in cement-based materials with an effective bonding property between fiber and the matrix due to the surface treatment of hydrophilic modification. RQS ? -Ⅵ can decrease and impede the plastic and drying shrinkage of cement-based materials. It can also significantly improve the crack-resistance, impermeability, impact and fire resistance of cement-based materials.