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ASSESSMENT OF FINE RECYCLED AGGREGATES IN MORTAR
Book Contribution - Book Chapter Conference Contribution
In this study, the influence of fine recycled concrete aggregates as replacement for sand in
mortar and the use as cement replacement and filler is investigated. Mortar with fine recycled
aggregates is examined on its mechanical and physical properties. The samples are also
examined on a microscopic scale. The fine recycled concrete aggregates are made with one-year
old concrete made in the laboratory. Fine recycled aggregates (FRCA) are added as a cement
replacement (0 %, 10 % and 20 %), as a sand replacement replacing different fractions of
natural sand, and as a filler (5 %, 10 % and 25 %). For the cement replacement and filler, the
fines are made as fine as possible: (< 0,32 and < 0,16 mm). Fine recycled concrete aggregates
used as a cement replacement have a negative influence on all properties. For the use as
a sand replacement, the mixtures show an increase in strength, but a significant decrease in
workability. The use as a filler is proven feasible for mix proportion using up to 10 % of fine
recycled concrete aggregates. This has a positive influence on the properties of mortar.
Book: CESB16 - Central Europe Towards Sustainable Building 2016 - Innovations for Sustainable Future
Pages: 1071 - 1078
ISBN:978-80-271-0248-8
Publication year:2016
Accessibility:Open