Marine Debris or Marine Liiter is a solid material that inadvertently or unintentionally left in the sea that has the impact of threatening the continuity and sustainability of marine life. Research on marine debris was conducted in West Aceh regency covering four coastal districts namely: Meurebo, Johan Pahlawan, Samatiga, and Arongan Lambalek. The purpose of this research is to identify the composition of marine debris in West Aceh district. So it can be as basic information to know the number and types of marine debris scattered in the coastal area of West Aceh regency, as well as for the related services in the management of marine debris. Data collection of marine debris is obtained by using line transects stretched along the coastline at the lowest tide. The results of research showed that Samatiga District is the most abundant area of marine debris with a total of 2300, then District Johan Pahlawan 1848, District Meureubo 281, and 145 District Arongan Lambalek. The most dominant composition of marine debris is found from all research locations divided (26.10%) Plastic Glass, (17.36%) Straw, and (14.95%) Food wrappers

The aim of this research is to investigate the influence of bamboo fiber on the mechanical properties of high strength concrete. The fiber was taken 0%, 0.5%, 1% and 1.5% against the weight of cement. The mix design conducted using weight comparison method. The test carried out at 28 and 56 days. The compressive and tensile strength test 28 days showed concrete obtained an average value of 62.47 MPa and 3.444 MPa for 0%, 59.83 MPa and 4.246 MPa for 0.5%, 59.07 MPa and 4.907 MPa for 1%, 54.92 MPa and 5.379 MPa for 1.5% bamboo fiber. The test at 56 days obtained 62.56 MPa and 4.907 MPa results with 0%, 60.77 MPa and 5.143 MPa at 0.5%, 59.82 MPa and 5.331 MPa at 1%, 55.11 MPa and 5.426 MPa with 1.5% use of bamboo fiber. The decrease in compressive strength on test 28 days occurred, which was close to the strength design, and there was an increase in the 56-day test. Tensile strength test of 28 and 56 days show an increase in each percentage of bamboo fiber added, where the optimal value obtained from the addition of 1.5% bamboo fiber.

The Punge intersection in Banda Aceh City is a four-armed intersection without traffic control devices such as traffic lights and roundabouts. The intersection performance from visual observation is currently very low, especially during peak hours. Therefore, it is presently considered necessary to evaluate road performance and carry out alternative handling planning. One alternative handling is to plan a roundabout at the intersection. Thus, this study aims to obtain road performance by comparing the use of a roundabout and without a roundabout. Analysis and planning using the MKJI and PTV Vissim 10.00-02 methods. It requires data on traffic volume, road geometry, and environmental conditions around the location. The analysis of roundabout planning with the widening of each arm with the MKJI and Vissim methods produces the level of services to deliver the best decisions for improving the intersection performance

Concrete is high in compressive strength but low in tensile strength and very brittle material. In this study, rattan fibre used as an added material to help eliminate the brittle properties of normal concrete. Variations of fibre used consisted of 0%, 0.5%, 1%, 1.5%, and 2% by weight of cement with mixed planning using the American Concrete Institute method. The compressive strength and stress-strain tests were carried out when the concrete was 28 days old, with a design compressive strength of 25 MPa as many as 15 pieces. The value resulting from testing on normal concrete without the addition of fibres is 24.94 MPa, 0.5% variation of rattan fibres is 23.23 MPa, 1% variation of rattan fibre is 25.3 MPa, 1.5% variation of rattan fibre is 25.85 MPa, 2% variation of rattan fibre is 23.59 MPa. Normal concrete compressive strength test showed an increase in strength at 1.5% rattan fibre and decreased at an additional 2%. The result of stress-strain test in normal concrete without rattan fibre is 0.00125, 0.5% of 0.00254, 1% of 0.00067, 1.5% of 0.00053, 2% of 0.00333. The stress-strain test shows that the addition of rattan fibre can help eliminate the brittle properties that are lacking in normal concrete in general.

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