| 摘要 |
<p>A reinforced hydraulic cementitious composition containing a fibrous material comprising a homopolymer of acrylonitrile or a copolymer of acrylonitrile having a molar concentration of acrylic nitrile monomer units in the range of from about 98 percent to about 100 percent which has a denier in the range of from about 1 to about 25 and a length of from about 0.15 inch to 1 inch.</p> |
