Article Per Year (5 Year)
p-Index From 2019 - 2024
2.036
P-Index
This Author published in this journals
All Journal Jurnal technoscientia Jurnal Teknologi Jurnal Ilmiah MTG Jurnal Geosains dan Teknologi JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Pengabdian kepada Masyarakat Nusantara Journal of Earth and Marine Technology (JEMT)
Nofrohu Retongga
Sumbawa University Of Technology
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search
Journal : JURNAL TEKNOLOGI TECHNOSCIENTIA

 1 
ANALISIS KUALITAS INTRUSI ANDESIT SEBAGAI BAHAN BANGUNAN BERDASARKAN SIFAT KETEKNIKAN DI DAERAH BEJI, KECAMATAN UNGARAN TIMUR, KABUPATEN SEMARANG, JAWA TENGAH Retongga, Nofrohu; Purnamawati, Dwi Indah; Rakhman, Arie Noor
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 13 No 2 Februari 2021
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to identify the quality of andesite intrusive rocks as a building material. The research location is in the Beji area, East Ungaran District, Semarang Regency, Central Java Province. Analysis of rock quality using data from the test results of engineering and petrographic properties. The andesite studied is an intrusion into basalt. Based on the quality standard requirements for natural stone for buildings (SNI 03-0394-1989) these rocks can be mined for building materials, especially medium to heavy building foundations (1,150.040 -1,421.621 kg/cm2). The middle andesite has a higher strength than the lower andesite. The strength of the rock is supported by resistant minerals in the form of plagioclase, which dominates up to 35%. However, in the andesite body getting down, olivine tends to decrease by 5%. The weathering of these minerals is influenced by the condition of the water in the rock where the water content is 0.391 to 0.412%. In water-saturated conditions, the degree of saturation of the lower rock can reach 100%, exceeding the rock above, 87.5%. The strength of the rock at the bottom is lower, making the slope potentially easy to collapse when the mining method is started from the bottom, especially the excavation is carried out on steep vertical slopes.
Co-Authors Abdurrahman Saputra Adella Ulyandana Jayatri Aghib Dirgantara Agus Munandar Ahmad Husnul Fiqri Alfal Gilang Ramadhan Andika Gerardus Oratmangun Andyono Broto Santoso Aqmal Septian Hakim Ardian Anwar Arie Noor Rakhman Atikah Zahidah Atikah Zahidah Bayu Syakiran Budiman Budiman Dandy Firdiansyah Diana Septiani Roos Dwi Indah Purnamawati, Dwi Indah Efrat N Nainggolan Emi Prasetyawati Umar Frida Rosidatul Mu’awanah Friska Agustin Friska Agustin Indah Aprianti L. Muh. Fathur Rizki Landy Pratono Lia Alfianita M. Haris Marolop P Pangaribuan Muhammad Haikal Razi Muhammad Jihad Muhammad Rivai Nur Widi Astanto Agus Tri Heri Nurhikmah Putri Wijaya Oan Marcello Lukas Watania Popi Jolia Salia Rian Andriansyah Rio Bagas Saputa Rizaldi Rizaldi Rizky Syaputra Rohmad Bagus Abadi Samsun Samsun Sayidatina Hayatuzzahra Veri Irshapratama