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MOMENT-CURVATURE ANALYSIS OF GRADED CONCRETE BEAM WITH CONCRETE STRENGTH DISPARITY VARIATIONS M. Mirza Abdillah Pratama; Moch. Febrian Andi; Christian Hadhinata
Jurnal Pensil : Pendidikan Teknik Sipil Vol 11 No 1 (2022): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.35 KB) | DOI: 10.21009/jpensil.v11i1.25072

Abstract

The application of graded concrete on structural elements is predicted to increase the capacity of the structural performance, serviceability, and to reduce costs compared to conventional concrete structures. This study aims to analyze (1) the load-deflection relationship, (2) the moment-curvature, (3) the deflection ductility ratio, and (4) the crack pattern. This study used reinforced concrete (RC) beams specimens with the dimension of 13x19x150 cm which was categorized as reference specimens and graded concrete beams. For reference specimens, an RC beam possessing concrete strength of 30 MPa; 40 MPa; 50 MPa were prepared; For the graded concrete beams, two specimens made of 30-40 MPa; 30-50 MPa; 40-50 MPa were prepared. In terms of casting graded concrete beams, low-strength concrete is placed on the tensile fiber of the beam, while on the compressive fiber of the beam, high-strength concrete is placed. The specimens were tested using the four-point bending method. The results showed that the increase in the concrete strength in the compression fiber of the beam contributed to the increase in load capacity, stiffness, and serviceability in the post-crack phase. The increase of concrete strength in compression fibers by 20 MPa is considered effective and has a positive impact on the moment-curvature capacity and is considered efficient in construction costs. The deflection ductility of the beam is classified as partial ductile and is adequate for structural design in earthquake-prone areas. A flexural cracks pattern was found on each specimen.
PENINGKATAN KEWASPADAAN DAN PEMAHAMAN GURU TERHADAP ETIKA PENULISAN KARYA ILMIAH (STUDI KASUS: SD NEGERI 4 KEDOYO KABUPATEN TULUNGAGUNG) M. Mirza Abdillah Pratama; Christian Hadhinata; Kartika Indah Wahyuni; Ummi Afifatul Mufida; Syafa Aqilla Fadya; Julieta Eka Yudho Putri; Siti Nur Rahmah Anwar; Sri Umniati; Prijono Bagus Susanto; Lusty Mustikasari
Jurnal Pengabdian Kepada Masyarakat Vol. 1 No. 3 (2022): September: Jurnal Pengabdian Kepada Masyarakat
Publisher : Sekolah Tinggi Pastoral Kateketik Santo Fransiskus Assisi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkm.v1i3.19

Abstract

Writing scientific papers is one of the most significant things a teacher can do, especially if they want to advance to functional positions. However, producing scientific papers is a barrier for many teachers, leading to teachers engaging in dishonest behavior while writing scientific papers. The goal of this service is to organize socialization, training, and mentorship for SD Negeri 4 Kedoyo instructors on the importance of ethical issues and codes of ethics in scientific paper writing. This service's implementation is divided into three stages: pre-implementation, implementation, and post-implementation. As a result of this activity, socialization, training, and support in scientific writing with three primary resources, namely plagiarism, paraphrasing approaches, and reference managers, have been implemented. The post-test questionnaire score increased by 42.67% for the plagiarism indicator, 43.18% for the paraphrasing technique indicator, and 47.74% for the reference manager indicator, indicating an increase in SD Negeri 4 Kedoyo teachers' knowledge and understanding of literacy violations, ethics, and the code of ethics in writing scientific papers.