Freeze/thaw durability of concrete with recycled demolition aggregate compared to virgin aggregate concrete

Richardson, Alan, Coventry, Kathryn and Bacon, Jennifer (2011) Freeze/thaw durability of concrete with recycled demolition aggregate compared to virgin aggregate concrete. Journal of Cleaner Production, 19 (2-3). pp. 272-277. ISSN 0959-6526

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An increasing trend towards the use of sustainable processes has led to recycled materials being incorporated into concrete. It is generally recognised that crushed recycled construction aggregate material produces concrete of a lower compressive strength, when used as an aggregate replacement due to deleterious materials within the aggregate. It is generally accepted that in the UK, freeze/thaw attack is, after chloride-induced corrosion, the most common cause of concrete deterioration. This paper addresses the freeze/thaw durability of recycled aggregate concrete using a paired comparison test based upon weight loss and final compressive strength.
Recycled aggregate concretewas found to be of at least equal durability to concretemanufactured with virgin aggregates. This was due to careful selection of the replacement aggregate and treatment prior to batching.
Durability is an important material property and recycled aggregates need to be widely tested to gain confidence for use within the industry and this work shows future possibilities.

Item Type: Article
Uncontrolled Keywords: recycled construction waste, air entrainment, Polypropylene fibres,durability and concrete
Subjects: F200 Materials Science
F800 Physical and Terrestrial Geographical and Environmental Sciences
K200 Building
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Helen Pattison
Date Deposited: 18 Apr 2012 11:23
Last Modified: 13 Oct 2019 00:31

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