关键词: 聚乙烯醇纤维增强水泥基复合材料;对数变换GM(1,1)模型;冻融循环

Abstract: Using logarithmic transform GM (1,1) model instead of the original GM (1,1) model, predicting the relative dynamic elastic modulus of PVA -FRCC in salt under the coupled action of frozen -load, and based on the rule of life prediction , forecasting the freeze-thaw cycles.Results show that the established logarithmic transformation of the GM (1,1) model can be used in the medium long term prediction and the accuracy level is one .By adjusting the logarithmic transform model 's parameters c and d to rise the model's fitting and forecasting precision, expanded the scope of the model .The error of the test value and the predicted value of the elastic modulus is less than 5％.Compared with other specimens, the number of freeze-thaw cycles under different stresses is greater than the sample of F 1.5 with 1.5 percent fiber content.

Key words: PVA-FRCC;logarithmic transformation GM(1,1) model;freez-thaw cycle