ji yu hui se li lun de pva-frcc kang dong xing shou ming yu ce

Grey model GM (1,1) was established to predict service life of polyvinyl alcohol fiber reinforced cementi-tious composites (PVA-FRCC) under the condition of freeze-thaw cycle. The research results show that the variance (C) of GM(1,1) is less than 0.35 and the small error possibility (P) is more than 0.95. So precision of GM (1, 1) is excellent and it can be used to predict and analyze the service life of PVA-FRCC. Relative dynamic elastic modulus of PVA-FRCC de-creased slower by adding PVA fiber in it. The degradation curve of relative dynamic elastic modulus is most smooth and the service life is longest when PVA fiber content is 1%, even in Changchun with lower temperature, the service life of PVA-FRCC can reach up to 143 years.