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Expect cooler temperatures

机译：预计温度会降低

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摘要

A decade ago, a typical compaction temperature for hot-mix asphalt (HMA) was 275°F. Though we all knew we should determine the equiviscous compaction temperature, a single compaction temperature was typically used for commonly available binder grades such as AC-20 or AC-30. In 1994, the Superpave mix design system was introduced. The implementation of the Superpave system brought renewed emphasis for the use of equiviscous mixing and compaction temperatures in the laboratory. In the field, agencies placed an increased emphasis on in-place density. There also was a significant increase in the use of polymer-modified binders. It is now commonplace to see inspectors and contractor personnel frequently checking mat surface temperatures with infrared thermometers. They have even been mounted on rollers. All of these factors have tended to increase production temperatures.
机译：十年前，热拌沥青（HMA）的典型压实温度为275°F。尽管我们都知道应该确定等压压实温度，但是通常将单一压实温度用于常用的粘合剂等级，例如AC-20或AC-30。 1994年，推出了Superpave混合料设计系统。 Superpave系统的实施重新强调了实验室使用等粘度混合和压实温度的重要性。在实地，机构更加重视就地密度。聚合物改性的粘合剂的使用也显着增加。现在，检查员和承包商人员经常使用红外温度计检查垫子表面温度已经司空见惯。它们甚至已经安装在滚筒上。所有这些因素都倾向于提高生产温度。

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