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首页> 外文会议>International Conference on Soil Mechanics and Geotechnical Engineering(16 ICSMGE) vol.3; 2005; Osaka(JP) >Extruded polystyrene (XPS) foam frost insulation boards in railway structures
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Extruded polystyrene (XPS) foam frost insulation boards in railway structures

机译：铁路结构中的挤塑聚苯乙烯（XPS）泡沫防冻板

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摘要

The use of extruded polystyrene foam boards in track structures requires that high thermal resistance is retained in the harsh loading environment of the track. To retain low thermal conductivity, the frost insulation board must be able to resist the absorption of water despite minor mechanical damage. The replacement of the blowing agent used in board production over the last 15 years, due to environmental concerns, has also decreased the thermal resistance of the board. This paper discusses the field and laboratory studies conducted to evaluate the sustained performance of XPS boards. As a result of the project, the dimensioning value for the thermal conductivity of XPS frost insulation boards was changed to 0.050 W/Km and stricter compressive strength requirements for the boards under high axle loads were introduced.
机译：在轨道结构中使用挤出的聚苯乙烯泡沫板要求在轨道的恶劣负载环境中保持高的耐热性。为了保持较低的导热率，防冻板必须能够抵抗轻微的机械损坏，但仍能抵抗水的吸收。由于对环境的关注，在过去15年中更换板材生产中使用的发泡剂也降低了板材的耐热性。本文讨论了为评估XPS板的持续性能而进行的现场和实验室研究。作为该项目的结果，将XPS防霜隔热板的导热系数的尺寸值更改为0.050 W / Km，并提出了在高轴载荷下对木板的更严格的抗压强度要求。

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