聚丙烯纤维混凝土强度冻融损失率灰色关联分析
Grey relational analysis on strength loss rate in freeze-thaw cycles of polypropylene fiber concrete
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摘要: 利用灰色系统理论的灰色关联分析,在文献数据基础上,对影响聚丙烯纤维混凝土强度冻融损失率的4个主要参数(水灰比、纤维含量、粉煤灰含量、减水剂含量)的关联度大小进行分析,并利用灰色预测模型建立关于聚丙烯纤维混凝土强度冻融损失率GM(1,N)方程.结果表明:对聚丙烯纤维混凝土强度冻融损失率影响因素关系为水灰比 > 减水剂含量 > 粉煤灰含量 > 纤维含量,可利用灰色关联分析的方法有效预测聚丙烯纤维混凝土强度冻融损失率.灰色预测模型GM(1,5)的冻融损失率的预测结果有较好精度.Abstract: Using the grey relational analysis of grey system theory, the correlation of four main parameters of the effect strength loss rate of polypropylene fiber concrete on freeze-thaw cycles: water-cement ratio, volume fraction of fiber, fly ash content, and superplasticizer content was analyzed based on literature, and using the grey prediction model, the GM(1, N) equation of the strength loss rate of polypropylene fiber concrete in freeze-thaw cycles was established. The results showed that influencing factors of the strength loss rate of polypropylene fiber concrete in freeze-thaw cycles were as follows: water-cement ratio > superplasticizer content > fly ash content > volume fraction of fiber. The results of grey forecasting model GM(1, 5) showed good agreement with the experimental results. It was shown that could effectively predict the strength loss rate of polypropylene fiber concrete in freeze-thaw cycles by using the method of grey relational analysis.
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