Strength and fracture analysis of polymer-granular matter composites at variable weight percent ratios
DOI:
https://doi.org/10.20526/pisika.01a18.08Abstract
In this study, the optimal weight percent ratio of resin and aggregate for a polymer-granular matter composite
(PGMC) was determined in terms of its compressive strength. The PGMC was made with polyester for its
resin, and white sand as its aggregate. The weight percent ratios of the PGMC varied as follows: 15:85, 20:80,
and 25:75 for resin and aggregate respectively. The PGMC specimens underwent a compression test after
a curing period of seven days at room temperature to determine its compression strength. Results indicate
that the PGMC with weight percent ratio 25:75 had the highest average compression strength at 76.4 MPa
which is more than twice the strength of cement-based concrete. The 15:85 and 20:80 PGMCs yielded average
compression strengths of 19.8 MPa and 60.8 MPa respectively. The most common fracture type for the PGMCs
having weight percent ratios 20:80 and 25:75 was shear, occurring 83.3% of the time. On the other hand, the
PGMC having weight percent ratio 15:85 displayed shear wedge fracture for five of the six trials.
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Issue
Welcome to the maiden online issue of PISIKA.
PISIKA is a bi-annual online journal that was conceived to provide physicists and physics educators, both from the Philippines and abroad, an accessible reference and online resource. The name “PISIKA” pays homage to the quarterly journal previously published by the Samahang Pisika ng Pilipinas (SPP), which was launched in October 2007. With this online journal, it is hoped that the dissemination of research output and sharing of scientific knowledge will be more expedient.
The articles appearing in this issue are select, peer-reviewed papers presented during the 36th SPP Physics Conference held in Palawan, Philippines from June 6 to 9, 2018. In the future, this online journal will welcome submission of articles from the following research fields: astrophysics and atmospheric physics, complex systems, computational physics, condensed matter physics, instrumentation physics, lasers and their applications, liquid crystals, materials science, mathematical physics, optics and photonics, physics in medicine and biology, plasma physics, signal and image processing, theoretical physics, and physics education research, among others.
On behalf of the interim Editors-in-Chief, I would like to thank the members of the advisory panel and topical editors composed of experts in the fields of Photonics, Material Science, High Energy Physics, Computational Physics and Plasma Physics. PISIKA, as the Philippines’ first online physics journal is a testament to their invaluable contributions.
Thank you very much.
Interim Editor in Chief
About the Cover:
Monthly averaged Tropical Rainfall Measuring Mission (TRMM) satellite images for the years 2008-2017. See article by Archie Ilarian Veloria and co-authors, DOI: 10.20526/pisika.01a18.01. Cover art by Miguel Y. Bacaoco.
