飞机除冰液对停机坪水泥混凝土的影响

通过除冰液成分分析、混凝土试件除冰液浸泡实验、物相分析和冻融理论分析，探讨了剥落损坏发生的原因和机理。研究发现除冰液和水泥混凝土之间并不会发生化学反应；除冰液的渗入会增加混凝土内的水压力、渗透压、蒸气压差异和温度梯度。结果表明，除冰液参与下的剥落属于物理损坏，主要由冻融循环引起；除冰液的存在和入渗加剧了混凝土表面层的冻融剥落发生。建议从减少除冰液的用量、使用范围、与混凝土的接触时间，以及混凝土的抗冻等方面进行剥落防治。

Influence of aircraft deicer on apron cement concrete

In order to explore the cause and mechanism of apron cement concrete scaling, deicer component analysis, concrete specimen deicer soaking test and phase analyzing were carried out. It is found that there is no chemical reaction between deicer and cement concrete, water pressure, penetration pressure and vapor pressure variation are increased in concrete after deicer infiltration. The results show that scaling is caused by the freeze thawing cycle, infiltration of deicer deteriorates scaling. The scaling preventive treatments, such as reducing the volume of deicer, limiting its application area and contact time to concrete, and freeze proof ability of concrete could be considered. 3 tabs, 6 figs, 7 refs.