Incorporation of fine sanitary ware aggregates in coating mortars: Fid-Bau Portal

Incorporation of fine sanitary ware aggregates in coating mortars

Farinha, C. / de Brito, J. / Veiga, R.

Highlights • Incorporation of fine sanitary ware aggregates in coating mortars. • Extensive experimental program on the mechanical, durability and water-related properties of these mortars. • Almost all properties improved with the incorporation of fine sanitary ware aggregates. • Prospective applications include brick laying, masonry pointing or masonry repair mortars.

Abstract This paper analyses the behaviour of cement mortars with addition of grinded fine sanitary ware (GSWF) aggregates, in percentages of 0%, 10%, 15% and 20% of the natural aggregates’ volume, to be used as renderings. The effect of these recycled materials was studied in an experimental programme through several tests. The performance of these modified mortars was evaluated in terms of strength, water absorption, water retention, dimensional instability and water permeability. Some extra tests were also formulated to understand the microstructure of these mortars such as open porosity and magnifying glass observation. The research results were very positive since the modified mortars had, in the most tests, better performance than the reference mortar (0% of GSWF addition). The modified mortar with 20% addition of GSWF was the one with the best performance of all the modified mortars, in particular in terms of higher strength and lower water absorption.