Proficiency Testing Program for Fly Ash: Ensuring Quality and Consistency Through Standardized Evaluation

Author:

Vashishtha Shwet1

Affiliation:

1. National Test House (NR), Kamla Nehru Nagar, Ghaziabad, India

Abstract

This case study evaluates a Proficiency Testing Program (PTP) for fly ash testing, focusing on the homogeneity, stability, and performance of participating laboratories. The study aims to identify areas for improvement in testing methodologies to enhance the reliability of fly ash analysis. The PTP adheres to international standards, including ISO 13528:2015 and ISO/IEC 17043:2010, for sample preparation, testing, and data analysis. The PTP ensures the homogeneity of test samples through meticulous division, testing, and data-driven analysis. The stability of samples is monitored through regular tests at predetermined intervals, with results compared to initial homogeneity tests. The methodology of evaluation involves calculating Z' (z-prime) scores to assess the performance of participant laboratories, with scores within ±2.0 considered satisfactory and scores beyond ±3.0 considered outliers. The results of the proficiency testing reveal variations in the performance of participant laboratories across specific gravity, fineness, compressive strength at 7 days, and soundness by autoclave parameters. While most laboratories demonstrate adherence to expected values, some deviations raise concerns and highlight the need for continuous improvement. Laboratories with deviations are encouraged to evaluate their testing methodologies and address factors contributing to the observed deviations. Overall, the study underscores the importance of proficiency testing in ensuring the quality and consistency of fly ash testing. Continued development and refinement of proficiency testing programs are essential for the sustainable utilization of fly ash in various applications.

Publisher

Science Publishing Group

Reference15 articles.

1. Svegl F., Strupi J. S., Svegl I. G., (2006), “Proficiency testing of chloride content in different types of Portland cement”, Accred Qual Assur (2006) 11: 414-421.

2. Kaarls R. et. al. “Laboratory capacity building through the use of metrologically traceable reference values in proficiency testing programmes” Accred Qual Assur (2017) 22: 321–334.

3. Coarna M., Guslicov G., Neciu D., Toader M., Stancu C., “Split-Samples Testing Scheme According to EN ISO/CEI 17043 – Case Study on A Certified Fly Ash for Concrete”, Fourth International Proficiency Testing Conference Brasov, Romania (17) 18th − 20th September, 2013.

4. PIELERT, J., 1990, October. “Proficiency Testing as a Component of Quality Assurance In Construction Materials Laboratories”. In Test Quality for Construction, Materials and Structures: Proceedings of the International RILEM/ILAC Symposium (Vol. 9, No. E456, p. 60). CRC Press.

5. Kotyczka-Moranska, M., et al. "Inter-laboratory proficiency testing of the measurement of gypsum parameters with small numbers of participants." Accreditation and Quality Assurance 25 (2020): 373-381.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3