ANALISIS SINTESIS NANOSILIKA BERBAHAN DASAR FLY ASH MENGGUNAKAN METODE PRESIPITASI DENGAN VARIASI TEMPERATUR PENGERINGAN

NURWALIDAINI, IDA and Saloma, Saloma (2025) ANALISIS SINTESIS NANOSILIKA BERBAHAN DASAR FLY ASH MENGGUNAKAN METODE PRESIPITASI DENGAN VARIASI TEMPERATUR PENGERINGAN. Undergraduate thesis, Sriwijaya University.

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Abstract

Nanosilica is a silica-based material with particle sizes ranging from 1 to 100 nm, which plays a significant role in enhancing the compressive strength of concrete. This research aims to synthesize high-quality nanosilica using fly ash waste as the primary raw material. The synthesis process was carried out via the precipitation method, utilizing fly ash, sulfuric acid (H₂SO₄), sodium hydroxide (NaOH), and distilled water. Drying temperatures of 80°C, 100°C, and 120°C were applied to evaluate their impact on the synthesized product. The nanosilica produced was characterized using microstructural analysis techniques, including X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). The results of the research demonstrate that lower drying temperatures produce nanosilica with optimal purity, predominantly amorphous structures, and well-dispersed particles. The optimal drying temperature was determined to be 80°C, producing nanosilica with a silica purity of approximately 65%, a crystallite size of 10.89 nm, and phase compositions of 5.24% crystalline and 94.76% amorphous.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Nanosilica, Fly Ash, Precipitacion Method, XRF, XRD, SEM
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials > TA418.9.N35.W365 Nanostructured materials--Thermal properties. Heat--Transmission. TECHNOLOGY & ENGINEERING / Nanotechnology & MEMS.
Divisions:	03-Faculty of Engineering > 22201-Civil Engineering (S1)
Depositing User:	Ida Nurwalidaini
Date Deposited:	18 Jan 2025 06:54
Last Modified:	18 Jan 2025 06:54
URI:	http://repository.unsri.ac.id/id/eprint/165423

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