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ASTM D711-20

Заменен
Standard Test Method for No-Pick-Up Time of Traffic Paint — 5 стр.
Значение и использование

3.1 This test method serves as a laboratory control test. Types of traffic paints that can be tested with this method are waterborne, solventborne, and some 100 % solids liquid traffic paints. If wet film thickness, temperature, and humidity are controlled within the tolerances specified herein, this method can be useful for relative testing of traffic paints and potentially for qualification of traffic paints for field application in approved specifications. For improved repeatability and meaningful comparison of paint samples being tested, consistent air flow over the paint films during testing is important. Although a no-air-flow (static) test environment is standard, the buyer and seller should agree upon the air flow conditions, whether it be static or carefully regulated air flow (see 4.6.1 and 4.6.2). Because of the many variables operative in the field application of traffic paint (for example, film thickness, air temperature, humidity, wind speed, pavement type (asphalt or concrete), film profile over pavement, pavement temperature, pavement porosity, pavement moisture content, and the presence or absence of direct sunlight during striping), a direct correlation between the results of this test and field applications is difficult to obtain. However, relative field performance can be predicted using this method if the testing protocol is adhered to.

FIG. 1 Traffic Paint Drying Time Wheel and Ramp—Dual Model

FIG. 2 Picture of Apparatus and Traffic Paint Film Being Tested

           Each pass of wheel over the paint film should be at least 2.5 mm (1 in.) from each end of the paint film.

Область применения

1.1 This test method covers a laboratory procedure for determining the no-pick-up time of a traffic paint. The method uses a wheel consisting of a metal cylinder with rubber O-rings. The wheel is rolled down a ramp over a freshly applied traffic paint film repeatedly until there is no transfer of paint to the rubber rings. The elapsed time from paint film application to point of no paint transfer is the no-pick-up time. Key variables to be controlled during testing are film thickness, temperature, humidity, and air flow.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ICS
87.040 Paints. Including coating powders, paint coatings and protective paint systems / Краски и лаки. Включая порошки для нанесения покрытий, лакокрасочные покрытия и системы защитной окраски
93.080.30 Road. Including road traffic warning and control systems, devices and installations (speed controls, traffic signal installations, vehicle loop detectors, pavement markers, manholes, etc.) / Дорожное оборудование и установки. Включая технические средства и установки для регулирования дорожного движения (ограничители скорости, сигнальные установки для регулирования движения, указатели объезда, элементы разметки проезжей части автодорог, смотровые колодцы и т.д.)
Сборник ASTM
06.02 Paint –– Products and Applications; Protective Coatings; Pipeline Coatings / Красители – Продукты и их применение; Защитные покрытия; Покрытия для трубопровода