硅酸盐通报2024，Vol.43Issue(11)：4240-4253,14.
路面材料典型力学参数的不确定度评定试验研究
Experimental Study on Uncertainty Evaluation of Typical Mechanical Parameters of Pavement Materials
摘要
Abstract
To test and reflect the influences of objects,instruments,methods,and conditions on results and to obtain more reliable and accurate representative values of the mechanical parameters of pavement materials,this study was based on the theory of measurement uncertainty.It used cement stabilised aggregates and AC-16C asphalt mixtures as study objects and proposed using synthetic standard uncertainty instead of standard deviation in calculating the representative value to determine the standard deviation of measurement results.The synthetic formula was employed to determine the standard variance of measurement results.The results were evaluated with class A and class B uncertainties and verified by the Monte Carlo method(MCM).The results indicate that using synthetic standard uncertainty instead of standard deviation to calculate the representative value for structural design is more conservative and accurately reflects the actual project situation.The representative value of pavement mechanical parameters obtained based on measurement uncertainty theory effectively reflects the uncertainty of the mechanical parameters of the pavement material.This,in turn,affects the uncertainty of the pavement structural mechanical calculation and the pavement performance in the later stages of the project.The"Guide to the Expression of Uncertainty in Measuremen"(GUM)is applicable to the measurement uncertainty of pavements.While the GUM has a wide range of applicability,it presents significant errors for nonlinear measurement models and mathematical models with strong correlation components.Compared with the MCM,the evaluation process of GUM is relatively complex and prone to errors.The findings of this study are expected to provide a reference for accurately evaluating the representative values of typical mechanical parameters of pavement materials,thereby promoting the widespread application of measurement uncertainty evaluation theory in design,construction,and quality control.关键词
道路工程/水稳碎石/沥青混合料/测量不确定度/力学参数代表值Key words
road engineering/cement stabilised aggregate/asphalt mixture/measurement uncertainty/representative value of mechanical parameter分类
交通工程引用本文复制引用
唐利民,龚贵恩,彭守波..路面材料典型力学参数的不确定度评定试验研究[J].硅酸盐通报,2024,43(11):4240-4253,14.基金项目
湖南省教育厅自然科学研究重点项目(21A0206) （21A0206）
