Influence of the activator concentration and calcium hydroxide addition on the properties of alkali-activated porcelain stoneware
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Other documents of the author: Reig, Lucía; Soriano, Lourdes; Borrachero, Mª Victoria; Monzó, J.; PAYÁ, JORDI
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comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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http://dx.doi.org/10.1016/j.conbuildmat.2014.04.023 |
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Title
Influence of the activator concentration and calcium hydroxide addition on the properties of alkali-activated porcelain stonewareDate
2014-07Publisher
ElsevierISSN
0950-0618Type
info:eu-repo/semantics/articlePublisher version
http://www.sciencedirect.com/science/article/pii/S0950061814003407Subject
Abstract
Objective
The aim of this research was to investigate the influence of the alkali activator concentration and calcium dosage on the fresh behavior, compressive strength and microstructure of the binder produced by ... [+]
Objective
The aim of this research was to investigate the influence of the alkali activator concentration and calcium dosage on the fresh behavior, compressive strength and microstructure of the binder produced by the alkali activation of porcelain stoneware waste, using NaOH and sodium silicate solution as activators.
Materials
Porcelain stoneware waste, NaOH and sodium silicate.
Method
Tested properties of mortars were the compressive strength and the setting times. Thermogravimetric analyses, microscopic studies, pH measurements, XRD and FTIR tests were used to assess the evolution of the microstructure developed.
Results
The results show that the activator concentration and calcium to sodium molar ratio strongly influence the fresh behavior and the hardening process of mortars. A linear evolution of compressive strength with sodium addition was observed when keeping the SiO2 concentration constant. Mortar samples with up to 36 MPa under compression were obtained after curing for 7 days at 65 °C. [-]
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Construction and Building Materials, 2014, vol. 63Rights
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