Abstract
Concrete is one of the most widely used building materials today interms of physical construction. Concrete is made from a mixture offine, coarse aggregate, cement, and water with a certain ratio, aswell as materials that are usually added to the concrete mixtureduring or during mixing, to changing the properties of concrete tomake it more suitable in certain jobs and more economical, can alsobe added with certain other mixed materials as needed if deemednecessary. Seashells can be used to mix concrete. This study aims todetermine whether the addition of shells aggregate shells in aconcrete mixture can affect the mechanical properties of concrete.The specimens used are in the form of cubes with a size of 15cm x 15cm x 15 cm, consisting of additional concrete coarse and fineaggregate with shell substitution percentage of 0%, 15%, 20% with atotal sample of 45, with the planned concrete quality of K225. Theuse of sea shells in increasing the compressive strength of concrete isbetter used as fine aggregate than coarse aggregate. The use of seashells as a substitute for fine aggregates achieves maximum resultsat 20% composition.
Highlights
Concrete is one of the most widely used building materials today in terms of physical construction
This study aims to determine whether the addition of shells aggregate shells in a concrete mixture can affect the mechanical properties of concrete
Pngaruh Penggunaan Limbah Beton Sebagai Pengganti Agregat Kasar Pada Beton Normal Terhadap Kuat Tekan Dan Media Komunikasi Dunia Ilmu Sipil (Modulus) Elastisitas
Summary
Banyaknya sisa cangkang kerang disekitar perkampungan nelayan yang tidak dimanfaatkan karena dianggap tidak dapat didaur ulang. Selama ini hanya cangkang kerang yang bagus yang di dimanfaatkan sebagai hiasan dinding hasil kerajinan. Hal inilah yang mendorong penyelamatan ekosistem alam dengan memanfaatkan limbah sisa cangkang kerang untuk pemuatan beton dengan optimalisasi pemanfaatan limbah cagkang kerang ini diharapkan akan mengurangi limbah yang mencemari ekosistem alam. Perkembangan zaman era globalisasi yang semakin maju menimbulkan pekembangan teknologi konstruksi yang semakin pesat. Perkembangan teknologi konstruksi diperlukan agar kebutuhan akan bahan yang dibutuhkan tersedia dengan mudah dan cepat. Hampir sebagian besar material yang digunakan dalam pekerjaan konstruksi adalah beton (Concrete) yang dipadukan dengan baja (composite) atau jenis lainnya. Konstruksi beton dapat dijumpai dalam pembuatan gedung – gedung, jalan bendungan, saluran air dan lain – lain. Beton merupakan campuran antara semen Portland atau semen hidrolik lainnya, agregat halus, agregat kasar, dan air dengan atau tanpa bahan tambah. (Rahmadi,2017)
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