AbstrakBambu (Bambusa vulgaris schrad) merupakan tanaman yang banyak tumbuh di Indonesia. Menggunakan limbah bambu dari kerajinan maka dilakukan penelitian dengan memanfaatkan limbah kerajianan bilik bambu sebagai kayu lapis atau plywood. Tujuan penelitian ini adalah untuk mengetahui karakteristik modulus patah dan modulus elastis kayu lapis bambu. Potongan bambu dengan ukuran panjang10 cm; lebar 3 cm; dan tebal 8 mm dibuat sebagai lapisan dalam pembuatan kayu lapis. Lapisan bambu hingga menjadi triplek dipres serta menggunakan perekat epoxy resin dan hardener. Hasil penelitian menunjukkan bahwa kayu lapis dengan perekat 7% mempunyai modulus patah dan elastisitas tertinggi yaitu sebesar 8654 kg/cm 2 dan modulus elastis sebesar 6,94. Semakin tinggi kadar perekat maka semakin tinggi nilai kadar perekat dan semakin tinggi pula nilai modulus patah dan modulus elastisitas. Kata-kata kunci: Kayu lapis bambu, modulus patah, modulus elastisitasAbstract Bamboo (Bambusa vulgaris schrad) is a plant that grows a lot in Indonesia. Using bamboo waste from handicrafts then conducted research by utilizing waste kerajianan bamboo booths as plywood or plywood. The purpose of this research is to know the characteristic Modulus of Rupture and Modulus of Elasticity of bamboo plywood. Pieces of bamboo with length of 10 cm; Width of 3 cm; And 8 mm thick is made as a layer in the manufacture of plywood. Layers of bamboo to be plywood pressed and using epoxy resin and hardener adhesive. The results showed that 7% adhesive plywood had the highest modulus of rupture and elasticity of 8654 kg/cm 2 and an elastic modulus of 6.94. The higher the adhesive the higher the adhesive value and higher the modulus of the broken and the modulus of elasticity. Keywords: Bamboo plywood, Modulus of Rupture, Modulus of Elasticity PENDAHULUANKayu lapis adalah produk kayu yang dibuat dengan menggunakan perekat [5]. Kayu lapis ini biasa digunakan oleh masyarakat di Indonesia terutama untuk kebutuhan pembuatan peralatan rumah tangga maupun sebagai dinding bangunan. Kayu lapis ini biasanya dibuat dengan kayu dan berdiameter besar. Bahan-bahan yang diperlukan untuk membuat kayu lapis adalah dengan bahan baku utama kayu dan dengan menggunakan perekat. Perekat yang biasanya digunakan adalah perekat yang berbentuk cair. Kayu merupakan bahan serat yang biasanya digunakan untuk pembuatan papan
The purpose of this study is to identify concept mastery and scientific literacy skills for senior high school students. This study used quantitative-qualitative mix method. The subjects of this study are 12th grade student in Boyolali Regency. The instruments of this study are concept-based and scientific literacy-based multiple choice test accompanied by the reason of force theme which consist of five competencies. The level of concept mastery and scientific literacy skills of students are analysed through the appropriateness of the choice of answers with reasons. The result shows that that concept mastery influences the students' scientific literacy skills. The lowest of students' concept mastery and scientific literacy skills is on the subject of Impulse and Momentum.
AbstrackThis study's purpose is to determine the ability of multirepresentation of students with special needs after problem-based learning model applied. Deaf students need multiple representations to make it easier to understand subjects especially on physical materials. The method used in this research is mixed methods with triangulation design. The subject of this research is deaf students in SMPLB Negeri Ungaran. Required data include is the result of multirepresentation capability test. The result of the research shows that the big improvement of multirepresentation ability of students with problem-based learning model is 0.32. Categorization for multirepresentation capability are 3 high category students, 5 medium category students, and 1 low category student.
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