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STUDI PENGGUNAAN VARIASI CAMPURAN METERIAL PLASTIK JENIS HIGH DENSITY POLYETHYLENE (HDPE) PADA CAMPURAN BERASPAL UNTUK LAPIS AUS AC-WC (ASPHALT CONCRETE WEARING COURSE) Suprayitno Suprayitno; Sri Wiwoho Mudjanarko; Koespiadi Koespiadi; Arthur Daniel Limantara
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 8 No. 2 (2019)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.8.2.1410.222-233

Abstract

Roads with flexible pavement use asphalt as a binding aggregate so that it is much in demand rather than rigid pavement. Road infrastructure requires ongoing maintenance. The use of plastic packaging cannot be separated in everyday life. HDPE is a high density polyethylene. Based on the problem of the amount of used plastic waste currently available, this research is needed to find out how well the pavement uses the use of HDPE plastic as a mixed plastic waste. After testing in the laboratory and analyzing it according to the General Specifications of the Highway for normal composition without a plastic mixture of 0%, the asphalt content that meets all the requirements is estimated at asphalt level between 5.6% - 6%. From the results of the study with 4 different compositions, it was found that the optimal asphalt content composition of HDPE plastic mix 0%, 4%, 8% and 12% that meet the VIM and Stability obtained optimal 8% HDPE plastic mixture with an optimal asphalt content of 4.45%. Jalan dengan perkerasan lentur menggunakan aspal sebagai pengikat agregat sehingga banyak diminati daripada perkerasan kaku. Infrastruktur jalan membutuhkan pemeliharaan bersifat berkelanjutan. Penggunaan kemasan plastik tidak bisa dipisahkan dalam kehidupan sehari-hari. HDPE adalah polietilena berdensitas tinggi. Berdasarkan masalah jumlah sampah plastik bekas yang ada sekarang, penelitian ini diperlukan untuk mengetahui seberapa baik perkerasan menggunakan penggunaan jenis plastik HDPE sebagai limbah plastik campuran. Setelah menguji di laboratorium dan menganalisanya sesuai dengan Spesifikasi Umum Jalan Raya untuk komposisi normal tanpa campuran plastik 0%, kadar aspal yang memenuhi semua persyaratan diperkirakan tingkat aspal antara 5.6% - 6%. Dari hasil penelitian dengan 4 komposisi berbeda diperoleh komposisi konten aspal optimal campuran plastik HDPE 0%, 4%, 8% dan 12% yang memenuhi VIM dan Stabilitas diperoleh campuran plastik HDPE 8% optimal dengan kadar aspal optimal 4.45%.
Analysis of Project Network Planning Using the Critical Path Method Moh. Akhir; Koespiadi Koespiadi; F. R. Edy Santosa
THE SPIRIT OF SOCIETY JOURNAL : International Journal of Society Development and Engagement Vol 9 No 1: September 2025
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/scj.v9i1.3561

Abstract

In the development of the implementation of building construction projects, work is often delayed from the specified time, to overcome this, an implementation method is needed, one of which is using Network Planning with the Critical Path Method (CPM ). CPM is a basic method of planning and controlling a work system based on a network or network that can increase efficiency and effectiveness in allocating time and costs. The research method used is the primary research method, conducting observations or direct observations in the field and conducting face-to-face interviews on projects being implemented with a self-management system, carried out by the SMK Negeri 1 Bualemo school by forming a school construction team (P2S). The application of network planning with the CPM method in building construction can accelerate the project implementation schedule compared to the specified time and can increase the cost effectiveness of project implementation. The results of the study using CPM are known to be Critical Paths, namely Activities A – C – H – L – M – N – T – W – X – Y with the original project completion time of 175 days to 157 days, optimizing the time by 18 days, with the original Budget of Rp. 2,224,035. 000,- to Rp. 2,140,996,000 ,- cost optimization of Rp. 83,038,723.02.