Standard Test Method for Microscopic Evaluation of the Dispersion of Carbon Black in Polyolefin Geosynthetics

Importancia y uso:

5.1 Carbon black is added to many polymers to provide long-term resistance to ultraviolet-induced degradation. To achieve this, carbon black should be dispersed uniformly throughout the as-manufactured geosynthetic material. This test method is used to evaluate the uniformity of carbon black dispersion.

5.2 This test method is suitable only for those geosynthetics that can be sampled using a rotary or sledge microtome. The geometry, stiffness (hardness), or elasticity of some geosynthetic products precludes their being sampled with a micro-tome. The cross-sectional area of the geosynthetic must be composed of a continuous solid polyolefin material to be sampled using a microtome.

5.3 Extruded and oriented geogrids will require that microtome specimens be cut from the non-oriented bars of uniaxial products and the non-oriented nodes of biaxial products.

Subcomité:

D35.02

Referida por:

F2905_F2905M-24A, F2968_F2968M-24, F3534_F3534M-22, F3597-23, F1473-24, F3288_F3288M-20R24

Volúmen:

04.13

Número ICS:

59.080.70 (Geotextiles)