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    Permeability of ambient cured fly ash geopolymer concrete blended with additives

    Access Status
    Fulltext not available
    Authors
    Nath, P.
    Sarker, Prabir
    Date
    2016
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Nath, P. and Sarker, P. 2016. Permeability of ambient cured fly ash geopolymer concrete blended with additives, in Jensen, O. and Kovler, K. and de Belie, N. (ed), Proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering, segment on: Concrete with Supplementary Cementious materials (PRO 113), Aug 22-24 2016, pp. 393-401. Lyngby, Denmark: RILEM Publications S. A. R. L.
    Source Title
    Concrete with Supplementary Cementitious Materials
    Source Conference
    International RILEM Conference on Materials, Systems and Structures in Civil Engineering
    Additional URLs
    https://files.conferencemanager.dk/medialibrary/2A179311-431D-479F-9B86-AC05B769477E/images/Concrete_Supp_Cem_Mat_conf_proceedings.pdf
    ISBN
    9782351581780
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/2920
    Collection
    • Curtin Research Publications
    Abstract

    Fly ash geopolymer concrete is a low-emission alternative building material to ordinary Portland cement (OPC) concrete. Previous studies mostly reported the properties of heat cured geopolymer concrete. However, heat curing is a costly and energy-intensive process which is not always feasible for cast-in-situ concreting. This study presents the effects of different mixture parameters on the permeability properties of geopolymer concrete cured in ambient condition. Low-calcium fly ash was blended with small percentages of additives such as blast furnace slag, OPC and hydrated lime in order to enhance setting and overcome the need for heat curing. The results of different mixtures were compared with those of control geopolymer and OPC concrete. The results of ambient cured geopolymer samples were also compared with those of heat cured samples. It was found that the volume of permeable voids (VPV) of geopolymers modified with different additives remained unaffected, despite achieving higher strength as compared to the control concrete. Sorptivity of the mixtures depended on the type and amount of the additives present in the mixture. The results suggest the possibility of developing suitable blends for ambient-cured geopolymer mixtures to achieve similar strength and permeability properties as those of OPC concrete and heat-cured geopolymer concrete.

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    • Improved setting and hardening of fly ash geopolymer concrete cured at room temperature
      Nath, Pradip; Sarker, Prabir (2015)
      Fly ash based geopolymer is an emerging low-emission binder for concrete. Recent studies have shown that the properties of geopolymers are similar to those of the OPC binder traditionally used for concrete. Most previous ...
    • Early age properties of low-calcium fly ash geopolymer concrete suitable for ambient curing
      Nath, Pradip; Sarker, Prabir; Rangan, B. Vijaya (2015)
      Geopolymer is a promising alternative binder to Portland cement. It is produced mostly from by-product materials such as fly ash and blast furnace slag; hence recognised as a low-emission alternative binder for concrete. ...
    • Early age properties of low-calcium fly ash geopolymer concrete suitable for ambient curing
      Nath, P.; Sarker, Prabir; Rangan, V. (2015)
      Geopolymer is a promising alternative binder to Portland cement. It is produced mostly from by-product materials such as fly ash and blast furnace slag; hence recognised as a low-emission alternative binder for concrete. ...
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