Abstract In this study, implications of various mineral admixtures such as fly ash, silica fume, metakaolin, and Ground Granulated Blast Furnace Slag (GGBFS) for the rheological properties of fresh wet-mix shotcrete incorporating crushed aggregates are quantitatively assessed. Laboratory testing was performed using an IBB rheometer, which is proven to suitably measure the Bingham parameters of fresh concrete mixtures. Technical tips to improve the pumpability and shootability are also proposed in terms of the type and replacement level of mineral admixtures based on the results of rheological characterization. The findings from a series of laboratory tests include: (1) incorporating higher dosages of fly ash and silica fume led to an enhancement of both pumpability and shootability for wet-mix shotcrete mixtures; (2) the use of metakaolin and GGBFS was only effective in improving the pumpability, particularly when lower dosages were employed; and (3) a build-up thickness of approximately 240 mm to 390 mm could be achieved by varying the type and replacement level of mineral admixtures.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Rheological Characteristics of Wet-Mix Shotcrete Mixtures with Crushed Aggregates and Mineral Admixtures


    Contributors:

    Published in:

    Publication date :

    2017-09-11


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Rheological Characteristics of Wet-Mix Shotcrete Mixtures with Crushed Aggregates and Mineral Admixtures

    Yun, Kyong-Ku / Choi, Pangil / Yeon, Jung Heum | Online Contents | 2018


    Aggregates : sand, gravel and crushed rock aggregates for construction purposes

    Geological Society, Engineering Group, London | TIBKAT | 1993


    Soaking Effects on Strength Characteristics of Crushed Gravel and Limestone Unbound Aggregates

    Osouli, Abdolreza / Othmanawny, Goran / Tutumluer, Erol et al. | Transportation Research Record | 2018


    High Performance Concrete Mixed with Combinations of Mineral Admixtures

    Isanaka, Bhargav Reddy / Akbar, M. Abdul / Perumal, P. et al. | TIBKAT | 2021


    High Performance Concrete Mixed with Combinations of Mineral Admixtures

    Isanaka, Bhargav Reddy / Akbar, M. Abdul / Perumal, P. et al. | Springer Verlag | 2020