影响针入度分析准确度的因素探讨

Discussion on Influence Factors of Accuracy of Penetration Analysis

就水浴温度精度、不同厂家标准针、沥青放置时间长短及重复加热对针入度及针入度比的影响进行探讨,试验表明这些因素对针入度结果影响较明显,而对针入度比结果影响并不大。

In this paper, certain research was done to explore the influence of the precision of water temperature from the standard needle by different manufacturers, the storage period of asphalt , the reheating on penetration and the penetration ratio. The experiments showed that these factors had a fairly obvious influence on the penetration, but do little to the penetration ratio.