https://ph01.tci-thaijo.org/index.php/jermutt/issue/feed 2026-09-07T15:24:04+07:00 รศ. ดร.ศศิรดี จันทสี enjournal@en.rmutt.ac.th Open Journal Systems <p>Frontiers in Engineering Innovation Research has ISSN 3056-9273 (Online). It has published the high quality of article on physical science and technology which emphasize on engineering research. The target groups of the publication consist of lecturer, under graduate student, graduate student and researcher whose are the insider and third party of Rajamangala University of Technology Thanyaburi. This journal has published 2 issues per year such as the first issue on January to June and the second issue on July to December. </p> https://ph01.tci-thaijo.org/index.php/jermutt/article/view/268625 2026-07-23T08:15:51+07:00 Thatpicha Saengsawang thatpicha.saengsawang@g.swu.ac.th Supachai Sinthaworn suppachai@g.swu.ac.th

<p>This article aims to present the evolution and advancement of applying Electrical Conductivity (EC) measurement techniques for evaluating the quality and pozzolanic reactivity of materials, which was developed to overcome the limitations of traditional test methods, such as the Strength Activity Index (SAI), which are time-consuming and often subject to inaccuracies caused by physical impacts (packing effect). The EC technique is a rapid indirect method that monitors the reduction of calcium ions in a Portland cement solution under a controlled temperature of 80 °C, which can classify preliminary material reactivity trends within merely 24–28 hours. Based on relevant studies to date, this technique is widely accepted for analyzing the potential of complex novel alternative materials, such as activated stockpile ashes, agricultural biomass ashes, and binary blends. Statistical data confirm that the reduction in electrical conductivity exhibits a significant correlation with traditional standard test methods. However, this technique still has limitations that require precaution when assessing materials with soluble salts, high calcium content, or hidden calcite. Ultimately, the conclusion of the study indicates that the EC technique is a highly efficient preliminary screening tool, which, when considered in conjunction with chemical composition analysis, will help shorten the research time for new Supplementary Cementitious Materials (SCMs).</p>

2026-09-07T00:00:00+07:00 Copyright (c) 2026 Frontiers in Engineering Innovation Research