无机结合料稳定材料强度最少试件数量计算公式的研究

Study on the Formula for Calculating the Minimum Number of Specimens for the Strength of Materials Stabilized with Inorganic Binders

利用数理统计知识推导无机结合料稳定材料强度的最少试件数量与变异系数的关系,将计算结果形成表格,可解决当变异系数不能满足规范要求时如何确定最少试件数量的问题。进一步辨析论证《公路工程无机结合料稳定材料试验规程》、《公路路面基层施工技术细则》、《公路工程质量检验评定标准》对强度最少试件数量的相关规定存在相互矛盾及疏漏之处。

The relationship between the minimum number of specimens and the coefficient of variation of the strength of materials stabilized with inorganic binders was deduced by using the knowledge of mathematical statistics,and formed the calculation results into a table,which can solve the problem of how to determine the minimum number of specimens When the coefficient of variation can not meet the specifications.And it’s further analyzed and demonstrated that there were contradictions and omissions in the relevant provisions on the minimum number of strength specimens in Test Methods of Materials Stabilized with Inorganic Binders,Technical Guidelines for construction of Highway Roadbases and Inspection and Evaluation Quality Standards for Highway Engineering.