Epoxy is a thermoset synthetic product of polyepoxy resin reactions with hardening substances. In addition epoxy is also able to maintain the mechanical properties of a material in a wet environment, which is very important because it determines the quality of the material itself.The purpose of this study is to find out the effect of the ratio of epoxy resins to hardeners on the strength of…
Composite is a material in the engineering world that is made by combining twokinds of materials that have different properties. Composite from fiber materials continue to be researched and develoved in order to become an alternative material to replace metal materials, this is due to the nature of fiber composites that are stronger and lighter than metal. The purpose of this study was to chara…
Article History: Received Accepted Available online Along with the development of the manufacturing industry, the use of composite materials that are environtmentally friendly and can be recycled is a demand of current technology. Then, efforts need to be made with the use of natural fiber reinforced composite material which is one of the composite materials that can be ex…
Melihat peningkatan mobilitas penduduk yang sangat tinggi diperlukan peningkatan kualitas pembangunan prasarana transportasi jalan yang efisien dan efektif. Umumnya penanganan kerusakan perkerasan dilakukan dengan memberi lapis tambahan. Salah satu penyebab penurunan kekuatan campuran pada perkerasan lentur adalah proses penuaan dan untuk mengurangi tingkat penuaan digunakan peremajaan. Propo…
Jalan raya dengan perkerasan aspal merupakan sebagian besar prasarana transportasi darat di Indonesia. Hampir semua jalan raya tersebut setelah beberapa tahun mengalami kerusakan sehingga umurnya lebih pendek dari umur yang direncanakan. Menurunnya daya dukung jalan antara lain terjadinya proses penuaan campuran AC-WC. Salah satu alternatif untuk mengurangi karakteristik aspal yang keras dan ge…
Composite sandwiches have been developed and produced for various aspects of life today. Unsaturated polyester content combined with pin from plants such as the pin of bamboo plants that grows around us and polyurethane rigid foam as the core. The method of sandwich composite joints is very important when applied to construction such as window panels, walls, roofs, floors, and others. The metho…
Sandwich construction becomes an option on structures that have high stiffness with lighter weight. The principle of sandwich structure is to combine composite skin with a high elastic modulus with a lightweight composite core to obtain a rigid combination, strong but lightweight materials. However, the core made of polyurethane foam has a compressive strength and modulus close to zero in the d…
One of the materials used for the manufacture of composite materials is natural fibers. One that can be used is bamboo. However, bamboo fibers have low compatibility to polymers, requiring surface treatment. The purpose of this research is to know the effect of NaOH concentration and the duration of immersion in bamboo fiber treatment on the impact strength of bamboo fiber modified polyester re…
Article History: Received Accepted Available online The composite sandwiches have been developed and produced for various aspects of life. Unsaturated polyester content combined with pin from plants such as the pin of bamboo plants that grows around here and polyurethane rigid foam as the core. The method of sandwich composite joints is very important when applied to construction such as win…