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采用灰色关联理论对结构物混凝土的早期抗冻能力影响因素进行研究,以抗冻临界强度作为评价指标,水灰比、冻结温度、粉煤灰掺量和硅灰掺量作为影响因素,试验研究发现:对混凝土的早期抗冻能力影响最大的是水灰比,其次是冻结温度和硅灰掺量,最后是粉煤灰掺量;本试验研究的水灰比、冻结温度、粉煤灰掺量和硅灰掺量四个因素与混凝土抗冻临界强度的灰色关联度均大于0.6,说明这四个因素对混凝土的早期抗冻性能均有重要影响。
The influence factors of early frost resistance of structural concrete were studied by using gray relational theory. Taking frost critical strength as evaluation index, water-cement ratio, freezing temperature, fly ash content and silica fume content as influence factors, the experimental study It is found that the most important influence on the early frost resistance of concrete is the water-cement ratio, followed by the freezing temperature and the silica fume content, and finally the fly ash content. The water-cement ratio, freezing temperature, The gray relational degree between the four factors and the frost resistance critical strength of concrete is greater than 0.6, which shows that these four factors have an important influence on the early frost resistance of concrete.