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针对在冻融条件下粉煤灰混凝土的力学特性,本文对不同粉煤灰掺量的钢筋混凝土构件进行了弯压冻融循环试验,由试验结果分析表明,在混凝土中掺入适量粉煤灰,有利于混凝土的后期强度发展和承受弯曲变形的能力,不同程度的抑制了混凝土构件在破坏过程中裂缝的发展,提高了混凝土的抗裂性,说明在混凝土中掺入适量粉煤灰是改善混凝土性能简便而有效的方法之一。
In view of the mechanical properties of fly ash concrete under freeze-thaw conditions, the flexural freeze-thaw cycle tests of reinforced concrete components with different fly ash contents were carried out. The analysis of the test results showed that appropriate amount of fly ash was mixed into the concrete. It is conducive to the late strength development of concrete and its ability to withstand bending deformation. It inhibits the development of cracks in concrete structures in various degrees of failure, improves the crack resistance of concrete, and shows that it is better to incorporate appropriate amount of fly ash in concrete. One of the simple and effective methods of concrete performance.