Mitigation Effect of Waste Glass Powders on Alkali–Silica Reaction (ASR) Expansion in Cementitious Composite

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dc.contributor.authorKe, Guojun
dc.contributor.authorLi, Wengui
dc.contributor.authorLi, Ruyi
dc.contributor.authorLi, Yuelin
dc.contributor.authorWang, George
dc.date.accessioned2020-04-21T18:47:51Z
dc.date.available2020-04-21T18:47:51Z
dc.date.issued2018-11-20
dc.description.abstractThe effects of different contents and particle sizes of waste glass powder on alkali–silica reaction (ASR) expansion of cementitious composite bar were investigated in this study. Waste glass powder with particle size less than 300 μm exhibits an excellent mitigation effect on ASR expansion. With larger content and smaller particle size, the mitiga- tion effect of waste glass powder on ASR expansion gradually increases. The mitigation effect of waste glass powder with particle size ranging from 38 to 53 μm and 20% by weight of cement seems relatively better than that of fly ash. When the waste glass powder content reaches 30%, the mitigation effect is still effective and almost the same as that of fly ash. However, the waste glass powder with particle size larger than 300 μm presents negative mitigation effect on ASR expansion when the replacement rate is larger than 30%. On the other hand, the waste glass powder and calcium hydroxide (CH) further react, and produce more calcium–silicate–hydrate gels, which apparently reduce the amount of CH. Moreover, the increasing content of waste glass powder results in a lower pH value in the pore solu- tion of cementitious composite.en_US
dc.identifier.doi10.1186/s40069-018-0299-7
dc.identifier.urihttp://hdl.handle.net/10342/8313
dc.titleMitigation Effect of Waste Glass Powders on Alkali–Silica Reaction (ASR) Expansion in Cementitious Compositeen_US
dc.typeArticleen_US
ecu.journal.issue67en_US
ecu.journal.nameInternational Journal of Concrete Structures and Materialsen_US
ecu.journal.volume12en_US

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