Analisis Kekuatan Tarik Belah Komposit Laminat E-Glass Epoxy sebagai Penguat Beton Kolom Silinder Berdasarkan Metode Penyerapan Energi Bahan

Abstract

Tujuan penelitian ini adalah untuk mengetahui jumlah energi yang mampu diserap (ketangguhan) bahan beton kolom silinder (BKS) dengan menggunakan metode penyerapan energi dan menganalisis perbandingan antara kuat tarik belah (KTB) dengan Energi ketangguhan bahan (EKB) dari hasil uji tarik belah spesimen BKS diperkuat KLG. Berdasarkan grafik hasil uji tarik belah spesimen beton kolom slinder (BKS) diperkuat komposit laminat E-Glass (KLG). Pengujian kuat tarik belah menggunakan alat uji Universal Testing Machine, dan bahan baku yang di gunakan untuk pembuatan spesimen yaitu semen, pasir, kerikil, air, E-Glass, resin epoxy dan hardener. Cetakan spesimen beton mengunakan cetakan dengan mengikuti standar uji ASTM C496 yang memiliki diameter 50mm dan tinggi 150mm. Jumlah variasi spesimen pada penelitian ini berjumlah 5 variasi, yang diantaranya: variasi 1 (spesimen tanpa selubung), variasi 2 (spesimen E-Glass lapis 1), variasi 3 (spesimen E-Glass lapis 2), variasi 4 (spesimen E-Glass lapis 3), dan variasi 5 (spesimen E-Glass lapis 4), yang di setiap variasinya memiliki 3 spesimen pengulangan. Hasil penelitian ini ialah ketangguhan bahan maksimum rata-rata diperoleh pada jumlah selubung KLG pada 4 lapisan, yaitu sebesar 8635.16 Joule atau mengalami peningkatan energi ketangguhan rata-rata hingga 17800% terhadap spesimen tanpa selubung, begitu pula pada hasil perbandingan antara kuat tarik belah dan energi ketangguhan bahannya, semakin banyak laminat yang melapisi beton kolom silinder maka semakin besar pula kuat tarik belah dan energi ketangguhan bahannya. The purpose of this study is to determine the amount of energy that can be absorbed (toughness) of cylindrical column concrete material using the energy absorption method and analyze the comparison between the tensile strength of the split and the toughness energy of the material from the results of the split tensile test of the EGlass laminate composite -reinforced slinder column concrete specimen. Based on the graph of the tensile test results of the slinder column concrete specimen reinforced E-Glass laminate composite. Tensile strength testing uses Universal Testing Machine test equipment, and the raw materials used for specimen manufacturing are cement, sand, gravel, water, E-Glass, epoxy resin and hardener. Concrete specimen molds use molds by following the ASTM C496 test standard which has a diameter of 50mm and a height of 150mm. The number of specimen variations in this study amounted to 5 variations, which included: variation 1 (specimen without sheath), variation 2 (E-Glass specimen layer 1), variation 3 (specimen E-Glass layer 2), variation 4 (specimen E-Glass layer 3), and variation 5 (specimen E-Glass layer 4), which in each variation had 3 repeat specimens. The result of this study is that the average maximum material toughness was obtained in the number of E-Glass laminate composite sheaths in 4 layers, which was 8635.16 Joules or experienced an increase in average toughness energy up to 17800% against specimens without sheaths, as well as in the results of the comparison between the tensile strength and the toughness energy of the material, the more laminates that coat the cylindrical column concrete, the greater the tensile strength and toughness energy of the material.