Resistance to acid attack of alkali-activated binders: Simple new techniques to measure susceptibility
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https://riunet.upv.es/handle/10251/100825
Cita bibliográfica
Mellado Romero, AM.; Martha Iris Pérez-Ramos; Monzó Balbuena, JM.; Borrachero Rosado, MV.; Paya Bernabeu, JJ. (2017). Resistance to acid attack of alkali-activated binders: Simple new techniques to measure susceptibility. Construction and Building Materials. 150:355-366. https://doi.org/10.1016/j.conbuildmat.2017.05.224
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[EN] Two rapid tests were developed to evaluate the resistance to acid attack by ordinary Portland cement (OPC) and alkali-activated pastes. Acid neutralisation capacity (ANC) at pH 7, 4 and 2 was monitored with powdered pastes. In parallel, a `combined-pH assay¿ with a single sample was used to sequentially assess ANC at different pH values. A mass loss/consumed acid monitoring technique has been also developed in order to assess monolithic samples. The OPC paste showed the most degradation. Among the alkaliactivated pastes, those with the lowest calcium content (fly ash and spent-FCC catalyst) had the best performance.
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Construction and Building Materials issn: 0950-0618