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An overview on concrete carbonation in the context of eco-efficient
Torgal, Fernando Pacheco; Miraldo, Sérgio; Labrincha, J. A.; Brito, Jorge deCarbonation is a major cause of concrete structures deterioration leading to expensive maintenance and conservation operations. The eco-efficient construction agenda favours the increase of the use of supplementary cementing materials (SCMs) to reduce Portland cement’s consumption and also the use of recycled aggregates concrete (RAC) in order to reduce the consumption of primary aggregates and to avoid landfil...
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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