ASTM D 868-2021 “Evaluation of the Degree of Penetration of Road Sign Paint

Kahulugan at Layunin
4.1 Solvents in traffic paints may cause road surface components to penetrate into traffic markings, thus making traffic markings less effective as lane or direction indicators. This procedure describes how to prepare a panel for the coating under test and a reference panel coated with a specific solvent based traffic coating to be used as a control for the evaluation.

4.2 This practice is particularly useful for evaluating solvent-based traffic paints, but can also be used for other types of traffic signs, including waterpass paints.

4.3 describes two basic procedures for measuring the amount of bleeding. The procedure to be used shall be agreed upon by the buyer and the seller.

ASTM D 868-2021 “Evaluation of the Degree of Penetration of Road Sign Paint

Saklaw ng
1.1 This specification describes the test procedures used to determine the degree of seepage of traffic or road marking paint. Specific formulations of solvent-based traffic paint formulations are included as potential bleeding reference controls.

1.2 Values expressed in SI units shall be regarded as standards. Ang mga halaga na ibinigay sa mga panaklong ay para sa sanggunian lamang.

1.3 Ang pamantayang ito ay hindi nilayon upang matugunan ang lahat ng mga isyu sa kaligtasan, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng gumagamit ng pamantayang ito na magtatag ng angkop na kaligtasan, mga kasanayan sa kalusugan at kapaligiran at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.

1.4 Ang internasyonal na Pamantayang ito ay binuo alinsunod sa mga internasyonal na kinikilalang prinsipyo ng standardisasyon na itinatag sa Desisyon sa mga Prinsipyo para sa Pag unlad ng Internasyonal na Pamantayan, Mga Patnubay at Rekomendasyon na inilabas ng Komite sa mga Teknikal na Hadlang sa Kalakalan ng World Trade Organization.

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