研究了冻融与磨耗复合作用下的混凝土耐久性能。
The concrete durability under the compound action of freeze-thaw and abrasion is studied.
具有改善混凝土抗裂能力、抗冲击抗磨耗能力等作用。
It can be used to improve the concrete cracking resistance and seepage resistance.
运用轮轨相互作用原理，研究轮轨磨耗伤损的机理。
Based on the principle of wheel-rail interaction, the mechanism of the abrasive wear damage of wheels and rails is studied.
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