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Microstructure development of a drying tile mortar containing methylhydroxy-ethylcellulose (MHEC)

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Author: Faiyas, A.P.A. · Erich, S.J.F. · Nijland, T.G. · Hunnink, H.P. · Adan, O.C.G.
Type:article
Date:2015
Source:Copuroglu, O., Proceedings of the 15th Euroseminar on Microscopy Applied to Building Materials (15th EMABM) Delft, The Netherlands, June 17-19, 2015, 1-10
Identifier: 526220
Keywords: Materials · Tiling mortar · Methylhydroxy-ethylcellulose · PFM · SEM · NMR · Buildings and Infrastructures · 2015 Urbanisation · Nano Technology Fluid & Solid Mechanics · MAS - Materials Solutions SR - Structural Reliability · TS - Technical Sciences

Abstract

Cement based mortars are widely used as adhesive for tiles in building and construction. They have a limited timespan during which a tile can be placed effectively in order to develop sufficient bond strength. This timespan, usually called ’open time’, is controlled, amongst others, by adding water soluble polymers such as methyl cellulose or modified cellulose ether like methylhydroxy-ethylcellulose (MHEC) to the mortar. MHEC influences the drying behavior of the mortar. As such, it may be expected to influence the final microstructure of the tiling mortar. The paper reports the results of a combined scanning electron microscopy and nuclear magnetic resonance imaging study on the development of the microstructure of hardening mortar