Alternative cements may be defined as cementitious materials manufactured using novel, low-carbon processes that offer similar performance to traditional Portland cement. Most react in a familiar way with water, but some react with CO2 to solidify into a hardened mass. The burning of limestone to make these cements is usually reduced and, in some cases, eliminated.
Over the next decade, it is likely that we will see these materials in low-risk applications such as non-structural paving. For reinforced concrete, durability models and associated test methods will have to be developed and validated before standards can be proposed and adopted. In the UK, the specification document PAS 8820:2016 is a significant step forward enabling the use of some forms of concrete utilising alkali-activated cement binder.
Read more in these recent articles:
Guidance is also available on cement replacements in Specifying Sustainable Concrete.
This guide sets out how concrete's attributes can be used to minimise CO2 emissions.
Gives likely structural options for a concrete frame, with useful points to note - written by engineers for engineers.
A magazine to commemorate 70 years of Concrete Quarterly.
An all-you-need-to-know guide on the specification of sustainable concrete.
This guide focuses on the use of concrete at Coin Street Neighbourhood Centre and its part in creating a low energy building.
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This publication assists engineers in understanding the common challenges of building tall.
Guidance on how concrete can be used to achieve credits under the latest version of BREEAM NC:2014.
This publication widens the understanding of post-tensioned floor construction and illustrates the considerable benefits.
The buildings from 70 years of Concrete Quarterly.