|
doi:10.3850/978-981-08-7920-4_S3-M034-cd
Comparative Study on the Rheological and Durability Characteristics of Conventional and Glass-Enriched Self Compacting Concrete
M. Blankson, S. Erdem, A. R. Dawson and N. H. Thom
School of Civil Engineering, University of Nottingham, Nottingham, UK.
ABSTRACT
This paper presents the results of an experimental investigation carried out to analyze the characteristics
of glass enriched self-compacting concrete (SCGC) and conventional self-compacting
concrete (SCC). Fine aggregates were replaced by finely crushed glass shards in proportions of
10% and 20% inmaking the SCGCmixes. Effects on rheological-related properties, development
of strength, apparent porosity, capillary water absorption as well as ultrasonic measurements
were reported. Additionally, the mode of failure of the mixtures under compression was
observed via electron microscopy and the examination revealed that the failure planes fall
within the interfacial transition zone (ITZ) of the mortar and glass. The study also shows that
the segregation resistance and the flow rate are lower in the SCGC while the slump flow is
higher than the SCC. Moreover, the slump flow increased while the flow rate decreased with
an increase in the post-consumer glass content. The compressive strength of the SCGC was
also less than that of the SCC and the reduction increased as the glass content increased.
The development of compressive strength after 7 days was less pronounced in SCGC. Indices
of porosity and absorption showed higher values in SCGC. However, this research suggests
that waste glass could satisfactorily be utilized in SCC and could provide a viable option
of producing a sustainable concrete both from a structural and an economical point of view
provided the inherent properties are taken into consideration.
Keywords: Waste glass, Sustainable concrete, Workability, Micro-structure, Durability performance, Strength development.
Back to TOC
FULL TEXT(PDF)
|