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All Journal Portal: Jurnal Teknik Sipil Proceeding Applied Business and Engineering Conference
Yusniyanti, Erna
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Analisa Akresi, Erosi dan Perubahan Tata Guna Lahan Secara Spasial Pasca Terbentuknya Konstruksi Jetty Kuala Jangka Fahmi, Mirza; Majuar, Edi; Reza, Muhammad; Yusniyanti, Erna; Syarwan, Syarwan; Iskandar, Iskandar
Portal: Jurnal Teknik Sipil Vol 15, No 2 (2023): October Edition
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v15i2.4205

Abstract

As time goes by the impact of the construction of the Jetty construction which is located on Kuala Term Beach, Bireuen Regency around the coast causes accretion and erosion every year. To find out how big the impact caused by accretion and erosion on the coast was analyzed using Qgis software with sources based on satellite imagery. The purpose of this study was to determine the amount of accretion and erosion caused by sedimentation and eroded areas, to determine the success of coastal vegetation, and to determine the success of jetty construction on land use around the coast. The amount of accretion that occurred in 2006 was 302,140 m2, in 2009 it was 532,585 m2. Whereas in 2014 it was 385,239 m2, in 2015 it was 552,830 m2, in 2016 it was 526,214 m2 and in 2017 it was 541,591 m2. This resulted in the advancement of the coastline impacting an increasing area. Furthermore, in 2006 coastal erosion also affected the coastline of 472,178 m2, in 2009 it was 592,996 m2, in 2014 it was 361,477 m2, in 2015 it was 496,354 m2 and in 2017 304,765 m2 was the area that was eroded. As a result accretion and erosion also have an impact on changes in land use. Such as coastal vegetation, settlements, traders, and pond areas. According to the results of interviews with the community, dredging is very necessary to prevent shallowing in the estuary so that it does not interfere with the shipping lanes of fishing boats.
Evaluation of the Effect of Coconut Coir Fiber Addition on Polypropylene Matrix Composite Properties Milawarni, Milawarni; Yusniyanti, Erna; Nurlaili, Nurlaili; Suryati, Suryati
ABEC Indonesia Vol. 12 (2024): 12th Applied Business and Engineering Conference
Publisher : Politeknik Negeri Bengkalis

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Abstract

Research has been conducted on coconut coir fiber composites with a polypropylene matrix. The aim of thisstudy is to examine the effect of adding coconut coir fiber to the polypropylene matrix on the physical and mechanicalproperties of the composite. The method used is the hand lay-up method, which is carried out in the laboratory by initiallypreparing coconut coir fibers and polypropylene matrix, then mixing them and placing them into molds. Subsequently, hotpressing is performed at a pressure of 38 atm and a temperature of 150°C for 30 minutes. After being cooled to roomtemperature, the composite is tested according to testing standards. The results obtained are the density values of thecoconut coir fiber (CCF) and polypropylene (PP) composites ranging from 0.543-0.7 g/cm3, water absorption capacityranging from 0.5-16.45%, moisture content ranging from 0.14 – 0.22%, and thickness swelling value ranging from 0.76 -15%. For mechanical properties, the MOR value ranges from 11.22 – 19.20 MPa and the MOE value ranges from 220 –350 MPa.
Co-Authors Iskandar Iskandar Majuar, Edi Milawarni, Milawarni Mirza Fahmi Muhammad Reza Nurlaili Nurlaili Suryati Suryati Syarwan, Syarwan