Sifat Fisik dan Mekanik Mortar dengan Campuran Serutan Karet Ban Bekas Berbagai Merk
DOI:
https://doi.org/10.5614/jts.2020.27.2.2Keywords:
mortar, serutan karet ban bekas, merek ban bekas, sifat fisik dan mekanik.Abstract
Abstract
The used rubber tire is one of the waste that becomes an environmental problem because the amount is abundant, while the utilization is still minimal. There are several tire brands in Indonesia, such as Goodyear, Dunlop, Pirelli, Yokohama, Gajah Tunggal, MRF, Bridgestone, and Michelin. This research investigates the physical and mechanical properties of mortars mixed with various brands (A, B, C, and D) of rubber tire crumbs (SKBB). The specimens are 15 pcs of mortar cylinder with 10 cm in diameter and 20 cm in height consisted of SKBB-mortars (12 pcs) and standard mortars (3 pcs). Initially, the SKBB is filtered using a #4-sieve (4.75 cm) and then mixed in mortar mixtures as a partial substitute of sand by 40% of the sand volume. Physical and mechanical properties test consist of density, compressive strength, modulus of elasticity, and ductility. The results showed that all of SKBB-mortars were lightweight mortars with densities of 1584.4 - 1701.1 kg/m3. The addition of all brands of SKBB into mortar mixtures can reduce density, compressive strength, and modulus of elasticity, but increase the ductility of the mortars. The B brand of SKBB is considered as the best choice as a replacement material of the part of sands to get the SKBB-mortar having good strength and ductility. To obtain a mortar-SKBB having properties of more strength and more ductile, it can be chosen a used rubber tire having low density and low shear modulus.
Abstrak
Karet ban bekas merupakan salah satu limbah yang jumlahnya sangat melimpah, namun pemanfaatannya masih sangat terbatas. Ban bekas yang beredar di Indonesia memiliki beragam merek, antara lain Goodyear, Dunlop, Pirelli, Yokohama, Gajah Tunggal, MRF, Bridgestone, Swallow dan Michelin. Penelitian ini memeriksa sifat fisik dan mekanik mortar dengan campuran serutan karet ban bekas (SKBB) dari berbagai merek (A, B, C, dan D). Benda uji berupa 15 buah silinder mortar dengan diameter 10 cm dan tinggi 20 cm, yang terdiri dari 12 buah mortar SKBB dan 3 buah mortar normal. Bahan SKBB disaring terlebih dahulu menggunakan saringan no.4 (4,75 cm) dan dicampurkan pada adukan mortar sebagai bahan pengganti sebagian pasir sebesar 40% volume pasir. Sifat-sifat fisik dan mekanik yang diuji meliputi densitas, kuat tekan, modulus elastisitas dan daktilitas. Hasil pengujian menunjukkan bahwa mortar SKBB semua merek merupakan mortar ringan dengan densitas antara 1584,4 "? 1701,1 kg/m3. Penambahan SKBB semua merek pada adukan mortar dapat menurunkan densitas, kuat tekan dan modulus elastisitas mortar, namun meningkatkan daktilitasnya. SKBB merek B dinilai sebagai pilihan terbaik untuk digunakan sebagai bahan pengganti sebagian pasir pada mortar, untuk memperoleh mortar SKBB yang memiliki kekuatan dan daktilitas yang baik. Untuk mendapatkan mortar SKBB yang memiliki kuat tekan lebih tinggi dan memiliki sifat lebih daktail, dapat dipilih karet ban bekas sebagai bahan campuran mortar, yang rendah densitas dan modulus gesernya.
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