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ASTM D7402-09(2017)
Standard Practice for Identifying Cationic Emulsified Asphalts
4 стр.
Действует
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Разработчик:
Зарубежные/ASTM
ICS:
75.140 Waxes, bituminous materials and other petroleum products / Парафины, битумные материалы и другие нефтепродукты91.100.50 Binders. Including geomembranes, asphalts for buildings, etc. / Связующие вещества. Уплотнители. Включая геомембраны, строительный асфальт и т.д.93.080.20 Road. Including asphalts, road pavements, etc. / Дорожно-строительные материалы. Включая асфальт, дорожные покрытия и т.д.
Сборник (ASTM):
04.03 Road and Paving Materials; Vehicle–Pavement Systems / Материалы для покрытия и мощения дорог, Дорожно-транспортные системы
Тематика:
Road & Paving
Описание
Значение и использование

3.1 Cationic emulsified asphalts are identified by the migration of the particles to a negatively charged electrode (cathode) by means of a direct current. Aggregates and sands used in conjunction with emulsified asphalts are often predominantly either negatively or positively charged. Emulsified asphalts should be selected to be compatible with the available aggregate or sand. This practice will aid in identifying a cationic type of emulsified asphalt as defined by Specification D2397.

Область применения

1.1 This practice is used to identify cationic emulsified asphalts. Positively charged particles are classified as cationic. Emulsified asphalts that don’t register a positive charge may also be classified as cationic slow-setting if they coat a specific type of negatively charged silica sand.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

Ключевые слова:
asphalt emulsion; cationic emulsified asphalt; emulsified asphalt; emulsion; particle charge;