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Keyword: Concrete
A Review on the Effect of Varied Sand Types in Concrete at High Temperature
by Samya Hachemi and Zine Elabidine Rahmouni
Journal of Engineering Research and Sciences, Volume 1, Issue 4, Page # 38-47, 2022; DOI: 10.55708/js0104005
Abstract: In fact, aggregates in concrete generally occupied a considerable proportion of volume (60%-75%); sand constitutes about 30% to 50% of aggregates volume. It is well known that the nature of aggregates plays an important role on quality and properties of concrete. This suggests that the behavior of concrete exposed to high temperature is strongly linked… Read More
(This article belongs to the Section Civil Engineering (CVE))
A Study on the Hierarchical Expansion of the Triangle Concept in Mathematics Education
by Hyeseong Kang and Eunsung Jekal
Journal of Engineering Research and Sciences, Volume 5, Issue 5, Page # 12-18, 2026; DOI: 10.55708/js0505002
Abstract: This study aims to analyze the hierarchical development of the triangle concept across elementary and secondary mathematics curricula through the theoretical lens of Van Hiele’s geometric thinking levels. The triangle is introduced in elementary school as a visual and perceptual object, reinterpreted in middle school as a structure involving relationships among sides and angles, and… Read More
(This article belongs to the Section Education and Educational Research (EER))