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选用国内最具代表性的８种沥青，按照国标（ＧＢ／Ｔ４９０５）对针入度进行测定，通过平行实验和重复性试验，探讨了针入度对室温的敏感性与ＰＩ或ＰＶＮ的关系。
The most representative 8 kinds of asphalt in China were selected, and the penetration was measured according to the national standard (GB / T4905). The relationship between the sensitivity of needle penetration to room temperature and PI or PVN was discussed through parallel experiments and repetitive tests.