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All Journal Dentika Dental Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Journal of Technomaterial Physics
Zuriah Sitorus
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Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Dentistry Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Journal : Journal of Technomaterial Physics

 1 
Manufacture and Characterization of Porous Ceramics Based On Clay Soil And Banana Frond Powder Lisa Arianty; Zuriah Sitorus
Journal of Technomaterial Physics Vol. 4 No. 2 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i2.8398

Abstract

This work reports the manufacture and characterization of porous ceramics synthesized using clay and banana frond powder by employing the dry-pressing method. The clay and banana frond powder was filtered with a grain size of 200 mesh. Production of printed ceramics was made with the proportion of the combination of clay and banana frond powder of 100%:0%; 95%:5%; 90%:10%; 85%:15%; 80%:20%; 75%:25%; 70%:30%; 65%:35%; 60%:40%; 55%:45%; 50%:50% and heated with a sintering temperature of 1000°C with a holding time of 3 hours. The resulting ceramics are described by determining their actual properties (thickness, porosity, and shrinkage), mechanical properties (compressive strength and hardness), surface morphology and pore size (SEM), and base material (EDX). The results show that the mixed varieties of 50%:50% clay and banana frond powder have a density value of 1.22 g/cm3, a porosity of 41.31%, and heat loss of 11.41 %, compressive strength of 1.36 MPa, and hardness of 99.15 MPa. The surface morphology results showed that the sample has evenly distributed pore sizes of 10.54 m, 10.77 m, and 12.15 m, which is called a macroporous ceramic with a pore size of > 50 nm.
Manufacture of Polymer Concrete Based on Snake-Fruit Seeds (Salacca zalacca) and Sawdust with Polyester Resin as an Adhesive Mahdi Jauhar Harahap; Zuriah Sitorus
Journal of Technomaterial Physics Vol. 5 No. 2 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i2.12380

Abstract

This study aims to determine the effect of adding snake-fruit (Salacca zalacca) seeds and sawdust on polymer concrete's physical and mechanical properties. The results showed that the highest physical properties were 1.27 g/cm3 density, 12.5% ​​porosity, and 13.22% water absorption. The lowest physical properties are a density of 0.85 g/cm3, porosity of 2.65%, and water absorption of 2.07%. The highest mechanical properties are compressive strength of 16.70 Mpa, tensile strength of 4.39 Mpa, and flexural strength of 7.93 Mpa. The lowest mechanical properties are compressive strength of 6.80 Mpa, tensile strength of 1.11 Mpa, and flexural strength of 1.50 Mpa. SEM test results showed that the microstructure of polymer concrete showed differences between concrete samples A1 (consisting of 35 g of snake-fruit seeds, 15 g of sawdust, and 15 g of polyester resin) and polymer concrete samples B1 (consisting of 30 g of snake-fruit seeds, 15 g of sawdust, and 20 g of polyester resin). The SEM analysis of the A1 concrete sample reveals a dark surface color and conspicuous white lumps, which are attributed to polyester resin and arise from inadequate mixing of ingredients. In the case of sample B1, a higher concentration of visible resin lumps is observed.
Co-Authors Awan Maghfirah Eddy Dahar Lisa Arianty Mahdi Jauhar Harahap Syahrul Humaidi, Syahrul Yoshephin Romania