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Showing 1 to 7 of 7 for “"Alkali-activation"”.
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Valorization of boiler ash in alkali activated material
… materials. This is accomplished using alkali activation, a low energy approach which relies on a chemical reaction to give the product its strength. The aim is to create a mix design which is robust enough to account for the variability in the ash and which produces a high performing …
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Characterisation and properties of alkali activated pozzolanic materials.
… research has concentrated on the alkali activation of waste pozzolanic materials, especially ground blast furnace slag. This thesis has investigated the alkali activation of low calcium fly ashes. These form very poor pozzolans and the alkali activation of the fly ash offers the …
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Building nature conservation : masonry from alkali-activated industrial waste & the economics of ecosystem services
… into sustainable building materials through alkali-activation, we propose a solution to help alleviate the environmental, ecological, and human health impacts of India's housing crisis. Surge in material use leads not only to environmental impact from processing, manufacturing, and …
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Characterizations of concretes with alkali-activated binder and correlating their properties from micro- to specimen level
… and consumes significant amount of heat energy. Alkali-activated binder (AAB) is increasingly being considered as an environmentally friendly or green alternative to PC. The AAB is produced by alkali activation of aluminosilicate compounds as precursors with or without calcium ions in them in the …
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Effect of carbonation on bound chlorides in cementitious and alkali activated binders
… contributes to 4% of the global CO2 emission. Alkali activation of aluminosilicate industry by-products, such as ground granulated blast furnace slag, fly ash or calcined clays, can provide a viable binder system that can contribute towards the cement market. Activators such as sodium hydroxide …
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The nanostructure and degradation of C-S-H in Portland and blended cements
… the water activated systems and foil-like with alkali activation. Fly ash replacement did not change the morphology of lp and Op C-S-H. Small fully hydrated cement and PFA particles were filled with a less dense lp C-S-H with morphology very similar to the foil-like one. TEM-EDX showed that, in …
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The productive reuse of coal, biomass and co-fired fly ash
… (SCMs) in concrete and as precursors for alkali-activated geopolymers. Toward their potential use as an SCM, after characterizing these ashes assessing their compliance with ASTM C618 requirements, their impact on early-age hydration kinetics, rheology, setting time and permeability was …