نطاق 1.1 This test method includes an accelerated procedure for simultaneously determining the comparative characteristics of the insulating coating system applied to the exterior of the steel pipe with the purpose of preventing or mitigating corrosion that may occur in underground service where the pipe will come into contact with...
المعنى والغرض 4.1 The deterioration of insulation coating is closely related to its moisture content. Water permeability testing provides a means of monitoring the passage of water through a coating material by its change in dielectric constant. When expressed in time, the test data will reflect the rate of deterioration...
المعنى والغرض 4.1 قد تتسبب المذيبات الموجودة في دهانات المرور في اختراق مكونات سطح الطريق للعلامات المرورية, مما يجعل علامات المرور أقل فعالية كمؤشرات للحارة أو الاتجاه. This procedure describes how to prepare a panel for the coating under test and a reference panel coated with a specific solvent...
المعنى والغرض 4.1 This practice aims to assess the wear resistance of road markings. It should be noted that the high wear resistance of road markings applied to exposed road surfaces may not guarantee similar results when the same road markings are applied to old road surfaces. أستم د 913-2020 "Evaluating...
المعنى والغرض 3.1 Paint may over-settle if improperly formulated or processed. Oversettled paint is difficult to reintegrate into the paint system, resulting in time delays or valuable pigment remaining in the drum. This test method attempts to assess the extent of settlement caused by the accelerated test method D1309. The...
المعنى والغرض 5.1 This test method provides a standard procedure for color determination of thermoplastic pavement marking materials. The test method can be used in conjunction with various thermoplastic pavement marking specifications to determine whether the material complies with the described specifications. Manufacturers of these materials can also use this...
المعنى والغرض 4.1 The roundness of a glass sphere is a measurable aspect related to its performance as a retroreflective medium. The function of this test method is to measure the percentage of true spheres associated with compliance with the applicable specification. ملحوظة 1: This method has been used in other...
1 نِطَاق 1.1 This method involves laboratory test steps over a period of two weeks to simulate possible settlement of road sign paint in normal storage for approximately 12 months. 1.2 This standard is expressed in IN-1B units and the values given in parentheses are for reference only. 1.3 This standard is not...
