Effect of aerogel/silica fume under curing methods on properties of cement-based mortars
REVISTA DE LA CONSTRUCCION, vol.21, no.2, pp.368-386, 2022 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 21 Issue: 2
- Publication Date: 2022
- Doi Number: 10.7764/rdlc.21.2.368
- Journal Name: REVISTA DE LA CONSTRUCCION
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, DIALNET
- Page Numbers: pp.368-386
- Keywords: aerogel, silica fume, curing procedure, thermal conductivity, porosity, THERMAL-CONDUCTIVITY, SILICA FUME, COMPRESSIVE STRENGTH, HEAT, PARAMETERS, CONCRETE, AEROGELS, BINDER, PASTE
- Open Archive Collection: AVESIS Open Access Collection
- Istanbul University Affiliated: No
Abstract
In this study, the mechanical, thermal and porosity properties of mortar samples containing aerogel and silica fume under different curing conditions were investigated. For this purpose, 0%, 0.25% and 0.50% by weight of silica aerogel as a cement additive and 10% silica fume as an industrial waste material were incorporated in the cement mixtures. The prepared mortar samples were exposed to curing process in water, the wetting-drying effect and MgSO4 effect for 16 weeks. The highest thermal conductivity reduction of 31.2% was obtained from the water curing sample with silica fume addition at an aerogel content of 0.25%. Maximum compressive and flexural strengths were determined respectively from samples with silica fume addition at an aerogel content 0.50% as 74.5 MPa and no aerogel content as 11.3 MPa by wetting-drying curing. However, the lowest thermal conductivity coefficient was measured as 1.458 W/mK from the sample at an 0.25% aerogel content containing silica fume which completed the curing process under the influence of MgSO4 with a highest compressive strength increase by 24.6%.