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All Journal JURNAL TEKNIK Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil
Kristina Sembiring
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH KARAKTERISTIK KUAT TEKAN BETON MENGGUNAKAN SERBUK KAYU PADA CAMPURAN BETON Sempurna Bangun; Kristina Sembiring
Jurnal Teknik Vol 11, No 2 (2022)
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jt.v11i2.6660

Abstract

Concrete is one of the fastest building materials in today's development. Developments in the development sector have triggered high demand which has an effect on increasing productivity in today's construction world, so that manufacturers want to create new innovations. Therefore, research related to efforts to improve concrete quality is necessary. The basic ingredients of concrete are cement, sand, gravel and water. This study uses the type of cement, namely the type of cement PCC (Portland Cement Composite) in a concrete mixture and its effect on the quality of the concrete. In the development of concrete, no research is often carried out on the use of sawdust for concrete. One of the sawdust that can be used as for concrete mixtures that are natural and environmentally friendly is sawdust. The purpose of this study was to determine the effect of adding sawdust. The time in this study for 35 days was tested for concrete aged 7, 28, and 35. In order to achieve the stated goals, this research has stages that must be carried out. The tests carried out were testing the constituent materials of concrete including fine aggregate and coarse aggregate, as well as testing the compressive strength of this study adding sawdust to the concrete mixture. From this study, the compressive strength value of the use of two types of cement is lower than normal concrete for the compressive strength value, for the strength value. The addition of sawdust increases the compressive strength and flexural strength values in concrete from the addition of 10% and 20% sawdust.
Analisis Faktor-Faktor Pekerjaan Proyek Prasarana Jalan Lingkungan Kelurahaan Sukma Jaya Kecematan Sukma Jaya Kota Depok Wennas Alau; Sempurna Bangun; Kristina Sembiring
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 2 No. 2 (2024): April: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sip
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v2i2.216

Abstract

The factors that can affect the delay in the completion of road construction projects within the government of the Depok City Public Works Agency which are obtained from the analysis are poor material procurement; insufficient human resources; less than optimal contract management; procurement of construction equipment that is not managed; there is a request for changes to the work being done; financial problems; poor construction work monitoring and control; negative intervention from the community; slow decision making by the owner and changes in field conditions (weather, accidents, etc.). Based on the relative index method, the most influential factors are: 1. Unmanaged procurement of construction equipment 2. Changes in field conditions. Meanwhile, in the factor analysis method, it is obtained: Inadequate human resources (in the form of quantity and quality) less incompatible with the existing location of activities CCO (Contract Change Order) often occurs.
Co-Authors Sempurna Bangun Sempurna Bangun Wennas Alau