ASTM D4355-0 Geotekstillerin Işığa Maruz Kaldığında Bozulmasına İlişkin Standart Test Yöntemi, Nem, Ksenon Ark Cihazlarında Isı ve Isı

ASTM D4355, ışığa maruz kalan geotekstillerin bozulmasına yönelik standart bir test yöntemidir, nem, 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, toprak, kaynak, vesaire. It is based on ASTM G155 practices.

ASTM D4355-0 Geotekstillerin Işığa Maruz Kaldığında Bozulmasına İlişkin Standart Test Yöntemi, Nem, Ksenon Ark Cihazlarında Isı ve Isı

Deterioration of geotextiles

By exposing the sample to xenon arc radiation, nem ve ısı (end-use conditions), it is intended to cause property changes. Aslında, when exposed to these types of factors, polymers can have significantly altered mechanical, elektriksel, and optical properties. Localized weather-induced deterioration simulations, such as atmospheric pollution, biyolojik saldırılar, 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 Ve 2, sırasıyla.

ASTM D4355-0 Geotekstillerin Işığa Maruz Kaldığında Bozulmasına İlişkin Standart Test Yöntemi, Nem, Ksenon Ark Cihazlarında Isı ve Isı

Table I: Specifications of sample characteristics

argumentProduct specification
Number of specimens required20 for each test direction
Numune boyutu50 X 150 mm (2 X 6 içinde)
kalınlıkWithin ± 10% of nominal size

Masa 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
Bağıl nem50±10%
(Only during exposure)

Lamp filter

To specify
(Gün ışığı, window glass or extended UV)

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