Akademik Veri Yönetim Sistemi
Structural Faults and Repair-2016,, Edinburgh, Birleşik Krallık, 17 - 19 Mayıs 2016, ss.1-7
In this experimental work composites of self-consolidating concrete (SCC) with steel fiber reinforcement
were studied and influence of partial fiber and aggregate replacement with municipal polyethylene (PE)
wastes which were collected from one of the plastic recycling plants in Qatar were examined. Water-tocement
ratio, incinerator fly ash, silica fume and superplasticizer contents were kept constant in SCC
mixtures. Three different batches in which total fiber content kept constant at 2% by weight were
prepared. In the first batch, only steel fiber was utilized as reinforcement and no partial aggregate
replacement was applied. In the second batch, equal weight of steel fiber and PE fiber was utilized
together and no aggregate replacement was applied. In the third batch, only steel fiber reinforcement was
performed but in this batch 10% by weight of natural aggregate was partially substituted with PE waste
granules. Slump flow and v-funnel tests were performed to evaluate the filling ability, viscosity and
stability of the fresh SCC composites. A slight reduction in flowability was observed for composites with
PE wastes compared to the reference (first batch without PE) yet all batches satisfied the workability
requirements and considered as SCC. The influence of PE incorporation on mechanical performance of
SCC composites were investigated by conducting compression and flexural strength tests. This study
showed that partial substitution of PE wastes in the form of fiber and granules has similar influence on
SCC in terms of workability and strength. However more tests should be performed to differentiate their
influence in terms of load-transfer properties.