penetration index针入度指数
1.Discussion on Penetration Index as Key Quality Gradation Index of Paving Asphalt;针入度指数作为沥青质量分级指标的利弊
2.To get the relationship between indices on penetration index PI,equivalent brittle point T1.为了验证不同老化程度沥青结合料的针入度测量误差与针入度指数PI和当量脆点T1。
3.Since different penetration indexes (PI) were required for grade A and grade B asphalts in the new "Technical Specification for Construction of Highway Asphalt Pavements" (JTG F40-2004), which was issued by the China Ministry of Communications, some modification tests were carried out for improving the PI value of an AH-90 heavy-duty road asphalt to meet the grade A requirement.新的交通部行业标准JTG F40-2004《公路沥青路面施工技术规范》对A、B级沥青的针入度指数(PI)提出了不同的要求。
3)penetration-viscosity针入度粘度指数
1.Three kinds of evaluation method such as penetration index, penetration-viscosity index and complex modulus index are carried out to evaluate several kinds of asphalt binders.通过针入度指数PI、针入度粘度指数PVN以及复数模量指数GTS等3种指标评价了不同类型的沥青胶结料,总结了3种评价指标评价胶结料的优缺点,并根据试验结果说明了3种评价指标在评价不同沥青胶结料温度敏感性方面的适用性。
4)Penetration index method针入度指数法
5)penetration index PI针入度指数PI
6)penetration index(PI) of bitumen沥青针入度指数
延伸阅读
针入度分子式：分子量：CAS号：性质：标准圆锥体（一般共载重150克，也有规定100克的）在5秒钟内沉入保温在25℃时的润滑脂试样中的深度。单位是1/10毫米。针入度愈大表示润滑脂愈软，即稠度愈小；反之则表示润滑脂愈硬，即稠度愈大。沥青的针入度测定，不用标准圆锥体而用载重共100克的标准尖针。测定的条件与润滑脂相同。
