Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO TP 72:2008
• Năm ban hành / Publication date: 2008
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Method of Test for Quantitative Determination of the Percentage of Lime in Hot Mix Asphalt (HMA)
• Số trang / Page: 5

Phạm vi áp dụng / Scope of standard

This method covers the quantitative determination of the
percentage of lime in hot mix asphalt (HMA) by calculation of the
calcium hydroxide, Ca(OH)2, recovered from a sample of the mixture.
A specimen is obtained through drilling into the HMA and collecting
the drilling dust. The specimen is subjected to an acid filter boil
and wash and is analyzed using either Atomic Absorption (AA)
Spectrometry or Ion Exchange Chromatography (IEC).

This standard may involve hazardous materials, operations,
and equipment. 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 and health practices and determine the
applicability of regulatory limitations prior to use.