Investigasi Pengaruh Metode Pengolahan Limbah Sandblasting Sebagai Nano-Silika Terhadap Sifat Mekanik Dan Durabilitas Beton

Abidin, Muhammad Zainal (2024) Investigasi Pengaruh Metode Pengolahan Limbah Sandblasting Sebagai Nano-Silika Terhadap Sifat Mekanik Dan Durabilitas Beton. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sandblasting merupakan suatu pembersihan dengan cara menembakkan partikel yang berupa pasir silika terhadap suatu permukaan yang dapat menghasilkan suatu gesekan dengan tekanan, penelitian kali ini akan dilakukan proses modifikasi pasir silika limbah sandblasting menjadi nano silika, proses modifikasi akan dilakukan dengan dua metode untuk mendapatkan material nano kualitas terbaik, selain itu akan dilakukan investigasi terhadap pengaruh nanosilika limbah sandblasting terhadap sifat mekanik dan durabilitas beton dengan penggunaan kadar nano silika yang bervariasi, serta pengamatan terhadap karakteristik nano silika. Pembuatan nano-silika berbahan limbah serta pengaruh nanosilika (NS) dari limbah sandblasting sebagai bahan tambahan terhadap sifat mekanik dan durabilitas beton. Nano-silika diproduksi dengan menggunakan metode sol-gel dan penggilingan mekanis. Kemudian dicampurkan ke dalam campuran beton dengan variasi 0%, 1%, 2%, dan 3% sebagai bahan tambahan. Hasil penelitian menunjukkan bahwa produksi dengan kombinasi metode sol-gel dan penggilingan mekanis dapat menghasilkan ukuran rata-rata 148,9 nm dan kemurnian silika (SiO2) 96,90%. Penambahan 1% nano silika dapat memberikan pengaruh yang besar terhadap durabilitas beton, yaitu dengan menurunkan laju ion klorida, mengurangi penyerapan air, dan mengurangi adanya pori hingga 12,15% dalam beton. Uji kuat tekan juga menunjukkan bahwa penambahan NS dapat meningkatkan kekuatan beton hingga 41,77MPa pada variasi 1%.
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Sandblasting involves cleaning by propelling particles, typically silica sand, against a surface to generate friction with pressure. This research aims to explore the process of transforming waste silica sand from sandblasting into nanosilica. The modification process will employ two methods to achieve the highest quality nano-material. Additionally, the study will investigate the impact of sandblasting waste nano-silica on the mechanical properties and durability of concrete by incorporating varying levels of nano-silica. The study also observes the characteristics of nano-silica. The preparation of nano-silica from waste and the influence of nanosilica (NS) derived from sandblasting waste as an additive on the mechanical properties and durability of concrete were examined. Nano-silica was produced using the sol-gel method and mechanical grinding. It was then incorporated into the concrete mix at varying levels of 0%, 1%, 2%, and 3% as an additive. The results revealed that the combination of the sol-gel method and mechanical grinding could produce an average size of 148.9 nm with silica (SiO2) purity of 96.90%. The addition of 1% nano-silica significantly impacted the durability of concrete by reducing the rate of chloride ions, decreasing water absorption, and reducing the presence of pores by up to 12.15%. The compressive strength test also demonstrated that the addition of NS increased the concrete strength by up to 41.77 MPa at the 1% variation.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Beton, Nano-Silika, Sol-Gel, Limbah, Sandblasting
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA433 Strength of materials.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Muhammad Zainal Abidin
Date Deposited:	05 Feb 2024 16:57
Last Modified:	05 Feb 2024 16:57
URI:	http://repository.its.ac.id/id/eprint/105974

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