Abstract
The transport characteristics of waste glass powder incorporated self-compacting concrete (SCC) for a number of different durability indicators are reported in this paper. SCC mixes were cast at a water to binder ratio of 0.4 using glass powders with a mean particle size of 10, 20 and 40 µm and at cement replacement levels of 20, 30 and 40%. The oxygen permeability, electrical resistivity, porosity and chloride diffusivity were measured at different ages from 3 to 545 days of curing. The amount and particle size of the incorporated waste glass powder was found to influence the durability properties of SCC. The glass incorporated SCC mixes showed similar or better durability characteristics compared to general purpose (GP) and fly ash mixes at similar cement replacement level. A significant improvement in the transport properties of the glass SCC mixes was observed beyond 90 days.
Highlights
The durability of concrete can be defined as its ability to resist weathering action, chemical attack, abrasion and any other mechanism of deterioration while preserving its original form
The early age compressive strength for all the fly ash and glass powder mixes were lower than the general purpose (GP) control
Overall the results indicate the glass powder self-compacting concrete (SCC)
Summary
The durability of concrete can be defined as its ability to resist weathering action, chemical attack, abrasion and any other mechanism of deterioration while preserving its original form. The use of supplementary cementitious materials (SCMs) in concrete helps in increasing resistance towards most of the durability related issues. The early age compressive strength for concrete containing glass powder is generally lower than the equivalent PC concrete. Further grinding of the glass powder can reduce the average particle size and help to offset the lower early age compressive strength [10,13]. Numerous studies have reported the implications of using glass powder on the fresh and mechanical properties of concrete; limited information is available on the durability performance of such concrete
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