The effect of nano silica on short term drying shrinkage of POFA cement mortars

Citation

Nima Farzadnia and Noorvand, Hossein and Mohamed Yasin, Abdirahman and A. Aziz, Farah Nora (2015) The effect of nano silica on short term drying shrinkage of POFA cement mortars. Construction and Building Materials, 95. pp. 636-646. ISSN 0950-0618; ESSN: 1879-0526

Abstract

This study investigates effects of nano silica on short-term drying shrinkage of mortars with palm oil fuel ash (POFA) during the first 28 days of curing. Furthermore, moisture content, hydration volume, and permeability were measured in order to study underlying mechanisms. It was revealed that addition of nano silica to samples with 30% POFA as cement replacement lowered the drying shrinkage by 7.5%. Also, it increased the strength development rate by 15% from 7 to 28 days of curing. Nano silica advantageously affected the shrinkage by refining the microstructure, increasing the hydration volume and lowering free water in cement matrix.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1016/j.conbuildmat.2015.07.132
Publisher:	Elsevier
Keywords:	Nano silica; Palm oil fuel ash; Drying shrinkage; Mortar
Depositing User:	Ms. Nida Hidayati Ghazali
Date Deposited:	30 Apr 2018 15:30
Last Modified:	30 Apr 2018 15:30
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.conbuildmat.2015.07.132
URI:	http://psasir.upm.edu.my/id/eprint/46560
Statistic Details:	View Download Statistic

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