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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00379657" target="_blank" >RIV/68407700:21110/21:00379657 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/21:43922568
Result on the web
<a href="https://doi.org/10.1088/1757-899X/1205/1/012004" target="_blank" >https://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>

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 fluidized bed combustion (FBC) fly ash, siliceous fly ash, and Ca(OH)(2) addition, now available under the name Sorfix. XRD and TGA identified ettringite and C-S-H as two main hydration products. In addition, thermodynamic modeling verified robustness in terms of space-filling 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 m(3) batch. Primary lining of a newly built metro D in Prague served for the full-scale application, utilizing over 1000 tons of Sorfix and saving over 700 tons of CO2.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
IOP Conference Series: Materials Science and Engineering
ISBN
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ISSN
1757-8981
e-ISSN
—
Number of pages
6
Pages from-to
1-6
Publisher name
IOP Publishing Ltd
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
001293892700004

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