土工合成材料 土工合成材料抗冲击损伤保护效率的测定

[中文适用范围]： 本文件描述了用于测定地合成材料在硬表面受到半球形物体冲击载荷时防护效率的指标测试。该测试测量放置在地合成材料和刚性支撑之间的薄铅板厚度的变化。它还可用于性能测试，通过使用实际的刚性表面进行保护并使用真实的地合成材料序列。本测试适用于所有孔径小于 \(15 \mathrm{~mm}\) 的地合成材料（最大尺寸）。 [外文原描述]： This document describes an index test for the determination of the protection efficiency of a geosynthetic on a hard surface, exposed to the impact load of a hemispherical object. The index test measures the change in thickness of a thin lead plate lying between the geosynthetic and a rigid support. It is also used as a performance test, by using the real rigid surface to protect and the real sequence of geosynthetics. The test is applicable to all geosynthetics with apertures smaller than 15 mm (maximum size).