Skripsi

ANALISIS SORPTIVITY PADA MORTAR DENGAN PENAMBAHAN NANOSILIKA FLY ASH HASIL SINTESIS PRESIPITASI

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Sorptivity is an important parameter in evaluating the durability of materials, as it is related to the ability of mortar to absorb water through capillary action. In this study, nanosilica was synthesized from fly ash waste using a precipitation method with sodium hydroxide (NaOH) and sulfuric acid (H₂SO₄) solutions. The synthesized nanosilica was then used as a partial cement substitution in mortar mixtures. The nanosilica content varied at 0%, 3%, 6%, 9%, and 12% by weight of cement. The results indicate that the addition of nanosilica effectively improves the microstructure of mortar through the filler effect and pozzolanic reaction, which produces additional calcium silicate hydrate (C–S–H) gel and reduces the porosity of the material. However, at higher nanosilica contents, the effectiveness in reducing sorptivity tends to decrease due to the potential agglomeration of nanosilica particles in the mortar mixture, resulting in non-uniform dispersion. This study demonstrates that nanosilica synthesized from fly ash using the precipitation method has strong potential as an environmentally friendly and economical alternative additive in mortar. Keywords: nanosilica, fly ash, mortar, sorptivity, precipitation method.

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Detail Information

Series Title

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Call Number

T1940452026

Publisher

Indralaya : Prodi Teknik Sipil dan Perencanaan, Fakultas Teknik Universitas Sriwijaya., 2026

Collation

xvi, 138 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

691.507

Content Type

Text

Media Type

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Carrier Type

-

Edition

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Subject(s)

Mortar
Prodi Teknik Sipil dan Perencanaan

Specific Detail Info

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Statement of Responsibility

TUTI

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