Differences in the accuracy of test methods in the field of testing aggregate and determination of their causes

Construmat 2018

Uxa, R.^1 ; Vymazal, T.^1

Department of Building Testing, Faculty of Civil Engineering, VUT in Brno, Veveri 95, Brno, Czech Republic^1

关键词: Coefficient of variation;    Interlaboratory comparison;    Proficiency testing;    Sample preparation;    Test method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012060/pdf
DOI  :  10.1088/1757-899X/385/1/012060

来源: IOP

【 摘 要 】

A The article is based on the authors' many years of experience in providing laboratory proficiency testing including organization of proficiency testing by interlaboratory comparison. In the introduction are compared the basic tests in the field of aggregates, based on their coefficient of variation. Another part details the influence of each testing stage (sampling, sample preparation and the test itself) on the accuracy of the test results and proposes possible measures to reduce their variance.