评估除冰化学品对冻融循环下机场混凝土路面性能的影响

Seyed Saleh Sadeghi, Ali Abdi Kordani, Mohammad Zarei
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引用次数: 0

摘要

降雨和冻融循环等天气条件会影响机场的路面性能,因此需要考虑使用除冰化学品等方法来维持机场跑道的正常状态。除上述因素外,除冰化学品因其化学性质,对路面性能和对路面造成的损害也起着重要作用。因此,研究除冰化学品的影响并确定合适的材料来维护机场跑道是工程师的首要任务。本研究调查了三种除冰化学品氯化钠、醋酸钾和乙二醇(浓度分别为 23.3%、49% 和 69.07%)对混凝土在冻融循环下的抗滑性(英国摆锤试验(BPT)和道路试验机(RTM))和机械性能(抗压强度试验)的影响。BPT 测试结果表明,当循环次数超过 100 次时,氯化钠的抗滑性优于其他化学品。在 RTM 试验中,所有循环也都得出了这一结果。此外,根据 BPT 和 RTM 测试结果,乙二醇也不适合用于提高防滑性。此外,混凝土混合物的抗压强度结果表明,除冰化学品降低了混凝土混合物的抗压强度。根据所有结果,氯化钠的效果优于其他化学品。
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Evaluation of the Effect of De-icing Chemicals on Performance of Airport Concrete Pavement under Freeze-Thaw Cycles
Weather conditions such as rainfall and freeze-thaw cycles affect the pavement performance of airports; therefore, methods such as using de-icing chemicals are considered in order to maintain the normal condition of the airport runway. In addition to the above factors, de-icing chemicals play an important role in pavement performance and the damage caused to it due to their chemical nature. Therefore, investigating the effect of de-icing chemicals and determining the appropriate material to maintain the airport's pavement is a priority for engineers. In this study, the effect of three de-icing chemicals, sodium chloride, potassium acetate, and ethylene glycol (at concentrations of 23.3%, 49%, and 69.07%, respectively) on skid resistance (The British Pendulum Test (BPT) and The Road Test Machine (RTM)) and the mechanical properties (Compressive Strength Test) of the concrete under Freezing and Thawing Cycle were investigated. The BPT test results showed that sodium chloride resulted in better skid resistance than other chemicals when the number of cycles is more than 100 cycles. This result was also obtained for all cycles in the RTM test. Also, ethylene glycol was not suitable for improving skid resistance based on BPT and RTM tests. Furthermore, the results of the compressive strength of concrete mixtures showed that the de-icing chemicals reduced the compressive strength of concrete mixtures. Based on all the results, sodium chloride had better results than other chemicals.
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