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Durability of alkali-activated binders : a clear advantage over Portland cement...
Torgal, Fernando Pacheco; Abdollahnejad, Zahra; Camões, Aires; Jamshidi, M.; Ding, YiningThe alkali activation of alumino-silicate materials is a complex chemical process evolving dissolution of raw materials, transportation or orientation and polycondensation of the reaction products. Publications on the field of alkali-activated binders, state that this new material is likely to have high potential to become an alternative to Portland cement. While some authors state that the durability of these ...
Are geopolymers more suitable than Portland cement to produce high volume recyc...
Torgal, Fernando Pacheco; Ding, Yining; Miraldo, Sérgio; Abdollahnejad, Zahra; Labrincha, J. A.The 70% minimum construction and demolition wastes-C&DW recycling rate set by the Revised Waste framework Directive No. 2008/98/EC to be enforced beyond 2020, will increase the need of effective recycling methods in a dramatic manner. So far, recycled aggregates (which constitute the majority of C&DW) are reused in low volume percentages for average compressive strength concretes and mostly as road sub-base and...
An overview on the potential of geopolymers for concrete infrastructure rehabil...
Torgal, Fernando Pacheco; Abdollahnejad, Zahra; Miraldo, Sérgio; Baklouti, S.; Ding, YiningInfrastructure rehabilitation represents a multitrillion dollar opportunity for the construction industry. In USA alone the rehabilitation needs are estimated to exceed 1.6 trillion dollars over the next 5 years. Since the majority of the existent infrastructures are concrete based this means that concrete infrastructure rehabilitation is a hot issue to be dealt with. Besides the sooner concrete deterioration i...
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