Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 2: TFOT method
沥青和沥青粘合剂 - 热和空气影响下耐硬化性的测定 - 第2部分:TFOT方法
发布日期:
2014-11-05
实施日期:
2014-11-05
EN 12607的这一部分规定了一种测量沥青或沥青粘合剂薄膜上的热和空气的组合效应的方法,模拟大多数沥青粘合剂在沥青搅拌站混合过程中经历的硬化。该方法适用于其他沥青粘合剂,而不是沥青沥青,但参考温度可能会导致过度的硬化,与工厂混合过程中的实际条件不相似。该方法可能不代表在温热混合粘合剂混合期间发生的硬化。
此外,EN 12607的这一部分规定了加热后测定氧化沥青和硬工业沥青质量变化的方法。该方法用于检测挥发性成分。
该方法被称为TFOT,即薄膜烘箱测试。
警告:使用本欧洲标准可能涉及危险材料,操作和设备。本欧洲标准不旨在解决与其使用相关的所有安全问题。本欧洲标准的用户有责任确定危害并评估执行此测试方法所涉及的风险,并采取足够的控制措施来保护个体操作者(和环境)。这包括适当的安全和h
This part of EN 12607 specifies a method for measuring the combined effects of heat and air on a film of bitumen or bituminous binder, simulating the hardening which most bituminous binders undergo during mixing in an asphalt mixing plant. The method is suitable for other bituminous binders than paving grade bitumen, but the reference temperature might give excessive hardening that does not resemble real conditions during mixing at the plant. The method may not represent the hardening that occurs during mixing of warm mix binders.
Additionally, this part of EN 12607 specifies a method for the determination of the change in mass of oxidized bitumens and hard industrial bitumens after heating. The method is used to detect volatile components.
The method is referred to as TFOT, i.e. Thin Film Oven Test.
WARNING: Use of this European Standard can involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this European Standard to identify the hazards and assess the risks involved in performing this test method and to implement sufficient control measures to protect individual operators (and the environment). This includes appropriate safety and health practices and determination of the applicability of regulatory limitations prior to use.
If there is a likelihood of volatile components being present in a binder, this procedure should not be used. It should not be used for cut-back bitumen or bituminous emulsions before these products have been stabilized, e.g. in accordance with EN 13074 2.