5QI C,WEISS J,OLEK J.Characterization of plastic shrinkage cracking in fiber reinforced concrete using image analysis and a modified weibull function[J].Materials and Structures,2003,36(260):386-395.
6CHTOUROU H,RIEDL B.Graft copolymerization of methacrylic acid onto isotactic polypropylene by radiochemical methods[J].Polym Degrad Stab,1994,43(1):149.