Akademik Veri Yönetim Sistemi
International Civil Engineering and Architecture Conference 2019 (ICEARC’xx19), Trabzon, Türkiye, 17 - 20 Nisan 2019, cilt.1, ss.2181-2188
Rapidly increasing concrete production in the world also increases
environmental problems as waste concrete and this makes concrete recycling a
more important issue. Although there is not much big change in its use as
fillers, studies on recycling aggregates have increased in recent years and
more efficient results have been started. At the same time, it has become
possible to recycle fresh concrete with washing technology. In this study,
recent studies were examined on recycling in concrete technology. The studies
examined in this paper were mainly focused on the water absorption of the
recycling aggregate and to reduce the mixing water. There are some methods on
reducing the water absorption of aggregates such as polymer-based treatments,
mechanical processes, pre-absorbing and superplasticizer additive methods. In
the polymer-based treatment method, the recycling aggregates are immersed in silicon-based
additives and surrounded by a thin film layer. As a result, although the
water absorption and abrasion resistance positive results on the possibility of
negative results in terms of other researches will be deepened. In the mechanical
treatment process, recycling aggregates were processed in pan type concrete
mixing mixer with stripping blades. It was observed that 10 minutes of treatment yielded
the best water absorption rate at different times. The use of superplasticizer
additive was observed in the study using 0.10%, 0.15, 0.20, 0.25 and 0.30. As a result, the
increase in the amount of water decreases strength of concrete.