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

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

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Abstract

Nanosilica is a type of silica with a particle size ranging from 1 to 100 nm, which serves to enhance the compressive strength of concrete. It can be synthesized from fly ash waste. This study utilized fly ash, H₂SO₄ solution, NaOH, and distilled water, synthesized using the precipitation method. Drying times of 1, 2, 3, and 4 hours were applied as variables. Microstructural analysis was conducted using X-Ray Diffraction (XRD), X-Ray Fluorescence (XRF), and Scanning Electron Microscopy (SEM). The XRD results revealed that longer drying times increased particle size and the amorphous percentage. Based on XRF and SEM analyses, excessively short or long drying times reduced silica content. The optimal drying time was found to be 2 hours, producing silica with a purity of ±74.39%, a crystal size of 20.20 nm, 6.97% crystallinity, and 93.03% amorphous content.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Fly Ash, Nanosilica, SEM, XRD, XRF
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:	MULIA ADINATA
Date Deposited:	18 Jan 2025 06:53
Last Modified:	18 Jan 2025 06:53
URI:	http://repository.unsri.ac.id/id/eprint/165389

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