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All Journal Rang Teknik Journal Construction and Material Journal APPLIED RESEARCH ON CIVIL ENGINEERING AND ENVIRONMENT (ARCEE) Civil Engineering Collaboration Jurnal Rivet: Riset dan Invensi Teknologi
Rita Nasmirayanti
Civil Engineering Department, Engineering Faculty, Universitas Putra Indonesia YPTK Padang, Indonesia
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Concrete Compressive Strength of Post Combustion With and Without Watering Rafki Imani; Rita Nasmirayanti; Julio Rendi Akbar
Applied Research on Civil Engineering and Environment (ARCEE) Vol. 4 No. 01 (2023)
Publisher : POLITEKNIK NEGERI JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/arcee.v4i01.4803

Abstract

The strength of the building structure after a fire is determined by the length of time the fire takes place and the cooling process used. According to several previous studies, it is said that the longer the concrete burns, the lower the quality of the concrete will be. This study aims to observe the compressive strength of concrete after the combustion process by cooling through experimental trials on 21 samples of cube model concrete. The concrete sample consisted of three samples of normal concrete and 18 samples of concrete that would be given combustion treatment and the quality of the design concrete was K250. Three samples of normal concrete were tested at the age of 14 days, then 18 samples were prepared for the combustion process with normal fire. A total of nine samples of concrete were treated with combustion for one hour, two hours and three hours with normal cooling in the open air as many as three samples each. Meanwhile, nine other concrete samples that had undergone combustion were given cooling treatment by sprinkling with water. The average compressive strength of concrete with a duration of one hour, two hours and three hours without water cooling respectively is 320.05 kg/cm2, 285.65 kg/cm2 and 235.21 kg/cm2, with the percentage of decrease in the quality of concrete to normal concrete respectively is 9%, 19%, and 33%. Meanwhile, the average compressive strength of concrete with water cooling for the same duration of combustion is 295.72 kg/cm2, 245.34 kg/cm2 and 210.17 kg/cm2, with the percentage of decrease in the quality of concrete to normal concrete respectively is 16%, 30%, and 40%. Based on the results of this study, the duration of combustion and the cooling treatment used can reduce the quality of concrete compared to normal concrete.
RESPON STRUKTUR TERHADAP BEBAN DINAMIK GEMPA PADA RUSUN MAHASISWA INSTITUT TEKNOLOGI PADANG DENGAN SHEARWALL Ibnu Hanif Sudarmaka; Rafki Imani; Rita Nasmirayanti; Kharisma Permata Sari
JURNAL RIVET Vol 3 No 01 (2023): Juni 2023
Publisher : Program Studi Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/rivet.v3i01.1023

Abstract

Rusun Mahasiswa ITP Padang was originally designed without using a shearwall, but in practice, it was changed to using a shearwall with L-frame type. This study aims to analyze the effect of using shearwall on the columns and beams of Rusun Mahasiswa ITP Padang. The results showed that the use of shearwall with L-frame type on columns caused a 3% decrease in the axial force on the column, up to 90% in cross-sectional force, and up to 84% in moment load reduction. Meanwhile, the beam elements can reduce the shear force by up to 24%, and the moment load can be reduced by up to 35%. The deviation between floors in Rususn Mahasiswa ITP Padang has met the required limit, where the deviation values for the x direction (Δx) and y direction (Δy) are smaller than the permit deviation (Va).
Co-Authors Afrilda Sari Anggara Yunanda Asri Yuda Trinanda Deded Eka Sahputra Dimas Wicahyadi Fakhru Rozi Fitri, Meldia Ibnu Hanif Sudarmaka Ilham Novian Imani, Rafki Jihan Melasari Julio Rendi Akbar Kahfi Al Fajri Muis Kharisma Permata Sari Maiyozzi Chairi Maulana Ishaq Nadra Arsyad Tedy Wiraseptya Utami Dewi Arman