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Shotcrete using ternary binder made from coal combustion products: from lab tests to an application

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922568" target="_blank" >RIV/60461373:22310/21:43922568 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1088/1757-899X/1205/1/012004" target="_blank" >http://dx.doi.org/10.1088/1757-899X/1205/1/012004</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1757-899X/1205/1/012004" target="_blank" >10.1088/1757-899X/1205/1/012004</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Shotcrete using ternary binder made from coal combustion products: from lab tests to an application

  • Original language description

    The paper presents a ternary binder development and its utilization in shotcrete. The binder is made from fuidized bed combustion (FBC) fy ash, siliceous fy ash, and Ca(OH)2 addition, now available under the name Sorfx. XRD and TGA identifed ettringite and C-S-H as two main hydration products. In addition, thermodynamic modeling verifed robustness in terms of space-flling capabilities when varying input oxide composition. Since alkali-free accelerators produce mostly ettringite in Portland-based systems, a fraction of Portland cement was advantageously replaced with the ternary binder, forming early ettringite as well. Extensive testing led to 45% replacement of Portland cement, following J2 curve for early strength gain used commonly in shotcrete tunnel linings. The shotcrete was successfully tested in a mock-up experiment in a 2 m3 batch. Primary lining of a newly built metro D in Prague served for the full-scale application, utilizing over 1000 tons of Sorfx and saving over 700 tons of CO2.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/FW01010195" target="_blank" >FW01010195: Advanced and inovative processing technologies for strategic utilization and storing of coal combustion products (CCPs)</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    IOP Conference Series: Materials Science and Engineering

  • ISBN

  • ISSN

    1757-8981

  • e-ISSN

    1757-899X

  • Number of pages

    6

  • Pages from-to

    012004

  • Publisher name

    IOP Publishing

  • Place of publication

    Bristol

  • Event location

    Telč

  • Event date

    Sep 29, 2021

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article