ASTM D4355-0 光にさらされたジオテキスタイルの劣化に関する標準試験方法, 水分, キセノンアーク装置の熱と

ASTM D4355 は、光にさらされたジオテキスタイルの劣化に関する標準試験方法です。, 水分, and heat in xenon arc type equipment. This test describes the determination of tensile strength degradation of any permeable textile material used for soil, foundation, 土壌, ロック, 等. It is based on ASTM G155 practices.

ASTM D4355-0 光にさらされたジオテキスタイルの劣化に関する標準試験方法, 水分, キセノンアーク装置の熱と

Deterioration of geotextiles

By exposing the sample to xenon arc radiation, 湿気と熱 (end-use conditions), it is intended to cause property changes. 実際には, when exposed to these types of factors, polymers can have significantly altered mechanical, 電気, and optical properties. Localized weather-induced deterioration simulations, 大気汚染などの, 生物攻撃, and saline exposure, are not expected by the exposures used in this practice. After each exposure period, the sample is cut or stretched strip stretched to produce a degradation curve. The latter allows users to determine the tendency of geotextile materials to deteriorate when exposed to various factors such as solar radiation, water and heat. For a combination of UV exposure and salt water, you should consider ASTM D5894.

Typical experimental parameters for ASTM D4355 testing

The characteristics and operating conditions of the samples are specified in Tables 1 そして 2, それぞれ.

ASTM D4355-0 光にさらされたジオテキスタイルの劣化に関する標準試験方法, 水分, キセノンアーク装置の熱と

表 1: Specifications of sample characteristics

口論製品仕様書
Number of specimens required20 for each test direction
試験片サイズ50 バツ 150 んん (2 バツ 6 で)
厚さWithin ± 10% of nominal size

テーブル 2: Specifications of equipment operating conditions

irradianceAt 340nm
0.35W/(m2nm) Maintained at 0.02W/(m2nm)
Exposure periodOnly 90 minutes oF light at 65±3 oC (149±5 oF) uninsulated black panel temperature;
30 minutes of light spray
相対湿度50±10%
(Only during exposure)

Lamp filter

To specify
(Daylight, window glass or extended UV)

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