论文部分内容阅读
近年来,经济的快速发展,人们物质生活水平的提升,人们出行时选择飞机作为交通工具的现象已较为普遍。飞机作为空中交通工具,其飞机安全性至关重要,也受到全社会的普遍关注。在寒冷地区,飞机容易出现结冰的情况,一旦飞机结冰则会给飞行安全带来较大的影响,所以在飞机结冰状态下是严禁进行飞行的。目前为了确保冬季飞机的安全,往往会使用除冰液来做避免飞机出现结冰的现象。除冰液的主要成分为乙二醇,其使用后是对飞机结冰现象得到了有效的缓解,但对于停机坪上的混凝土也带来了较大的破坏,使用飞机除冰液后,混凝土出现了不同程度的脱皮和砂石剥落的情况,这不仅对飞机起飞和降落时的舒适性带来较大的影响,而且还危及到飞行的安全性。文中针对3.5%-25%浓度飞机除冰液作用下的混凝土的抗冻性能进行了分析,从试验中可以发现随着飞机除冰液浓度的不断升高,混凝土冻融破坏程度则随之减弱,但飞机除冰液不会被化学侵蚀。
In recent years, with the rapid economic development, the improvement of people’s material living standards and the choice of aircraft as means of transportation for people traveling, the phenomenon has become more common. Aircraft as air transport, its aircraft safety is crucial, but also by the general concern of society. In cold areas, aircraft are prone to icing. Once icing, the flight will have a greater impact on flight safety, so it is forbidden to fly while the aircraft is in an icing condition. At present, in order to ensure the safety of winter aircraft, deicing fluid is often used to avoid the phenomenon of ice on the aircraft. The main component of de-icing fluid is ethylene glycol. After its use, it has effectively alleviated the icing phenomenon of the aircraft, but also brought great damage to the concrete on the tarmac. After using the aircraft de-icing fluid, the concrete Various degrees of peeling and gravel exfoliation have occurred, which not only have a great impact on the comfort of the aircraft during take-off and landing, but also endanger the flight safety. Frost resistance of concrete under 3.5% -25% concentration deicing fluid was analyzed in this paper. It can be found from the experiment that as the deicing fluid concentration increases, the degree of freeze-thaw damage will be weakened , But aircraft deicing fluid will not be chemically attacked.