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Jurnal Teknologi
Published by Politeknik Negeri Lhokseumawe
ISSN : 14121476     EISSN : 25500961     DOI : http://doi.org/10.30811/teknologi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Jurnal Teknologi is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of technology and engineering sciences. The journal publishes original papers in Indonesian and English, which contribute to the understanding of engineering science and the improvement of engineering technology. Papers may be theoretical, experimental, or both, and applied engineering science and technology. The articles submitted to Jurnal Teknologi should be unpublished before and not under consideration for publication elsewhere. The scope of Jurnal Teknologi includes a wide spectrum of technology and engineering science subjects including: Civil engineering; Mechanical engineering; Chemical engineering Electrical engineering; Information and technology; Computer science and engineering; Materials science and engineering; Renewable energy engineering;
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 191 Documents
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Karakteristik Mekanik Beton Pozzolan dengan Agregat Halus Limbah Konstruksi dan Serat Bambu Efra Junior Lonteng; Steve Supit; Debby Willar
Jurnal Teknologi Vol 26, No 2 (2026): Agustus 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i2.9700

Abstract

The continued use of Portland cement and natural aggregates in concrete can increase carbon emissions and deplete natural resources. This study aims to analyze the effects of using fly ash, lime powder, red brick waste, and bamboo fibers on the characteristics of mortar and concrete, as well as the economic value of concrete mixtures. The study was conducted experimentally using five variations of mortar mixtures and three variations of concrete mixtures. The parameters tested included the flow table, mortar compressive strength, mortar porosity, concrete compressive strength, concrete flexural strength, and material cost analysis. The results showed that the use of alternative materials reduced the flow table value due to an increase in the water-to-cement ratio. The mortar mixture with 1% bamboo fiber addition yielded the highest compressive strength of 19.1 MPa with a porosity of 1.93% at 28 days. For concrete, the BC-3 mixture showed an increase in compressive and flexural strength compared to BC-1 without increasing material costs. Economic analysis showed that the material costs for BC-1 and BC-3 were Rp59,889.00, which is 13.13% lower than those of normal concrete. The research results indicate that the combination of fly ash, lime powder, red brick waste, and bamboo fiber has the potential to produce more economical concrete with better mechanical properties than modified concrete mixtures without fiber, thereby supporting the development of more sustainable construction materials.

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