【摘要】 为了解和提高国内实验室对沥青针入度测定的检测技术水平,能力验证提供者(CNAS PT0031)承担了中国国家认证认可监督管理委员会的沥青针入度测定的能力验证活动,有22个省、市、自治区共97家实验室参加。介绍了沥青针入度测定能力验证计划的样品制备、均匀性和稳定性检验、以及基于稳健评定的结果统计和分析等实施过程,对各实验室采用的针入度测试标准进行了统计和分析,提出了针入度测定的技术建议。能力验证计划统计表明,满意的实验室有85家,占反馈总数的87.6%。更多还原

【Abstract】 In order to investigate and improve the detection level of penetration of asphalt of domestic laboratories, proficiency testing provider PT0031(CNAS) has organized a proficiency testing(PT) program of penetration of asphalt of CNCA and 97 laboratories from 22 provinces/cities/municipals took part in the PT. This article introduces the implementation process of proficiency testing for determination of penetration of asphalt, including sample preparation, homogeneity and stability test, the results of statistics of robust statistic technique and analysis,summary. We also analyzed the different test standards widely used in the laboratories so as to put forward the technological suggestions for the improvement of test quality of penetration. Satisfactory results were obtained by 85 laboratories, amounting to 87.6% of the total participating laboratories.更多还原