The paper designs concrete deicer-frost recycle test,studies the impacts of fly ash and mineral powder mixture upon concrete deicer-frost capacity,discusses the fly ash and mineral powder hydration mechanism,and obtains the impacts of mineral mixture variety and amount upon concrete deicer performance.And then,it points out that double mixing fly ash and mineral powder can effectively improve the concrete performance,and too much mineral mixture will be bad for frost.As a result,it solves the problem of highway concrete mixing proportion design.%设计了混凝土盐冻循环实验,进行了粉煤灰和矿粉的掺入对混凝土抗盐冻能力影响的研究,并从粉煤灰、矿粉水化机理出发进行了论述,得出了矿物掺合料的掺入种类和掺量对混凝土抗盐冻性能的影响,指出双掺粉煤灰和矿粉能有效的提升混凝土的性能,同时发现了矿物掺合料过量的不利结果,解决了公路用混凝土配合比设计的重要问题。
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