Utilization of crumb rubber and FBC-based ternary binder in shotcrete lining

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00330306" target="_blank" >RIV/68407700:21110/19:00330306 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.cscm.2019.e00234" target="_blank" >https://doi.org/10.1016/j.cscm.2019.e00234</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cscm.2019.e00234" target="_blank" >10.1016/j.cscm.2019.e00234</a>

Result language

angličtina

Original language name

Utilization of crumb rubber and FBC-based ternary binder in shotcrete lining

Original language description

This paper describes the early-age properties of shotcrete modified by i) up to 12.5% by volume crumb rubber as a replacement for aggregates and ii) substitution of ordinary Portland cement (OPC) by a fluidized bed combustion-based ternary binder (FBC-TB) up to 80% of mass. For the tests conducted, an increase in the crumb rubber volumetric fraction of the mixture always led to a decrease in uniaxial compressive strength. Replacing OPC with FBC-TB up to 20% enhanced the development of the early-age compressive strengths; however, a larger substitution resulted in the reduction in the concrete’s final compressive strength. In a full-size experimental mock-up test, the highest-performing mixture—in terms of acceptable mechanical properties and a reasonable amount of reused by-products—was subjected to full deployment in a concrete batching plant. Two batches (6 m3 in total) of concrete with crumb rubber and FBC-TB replacement were sprayed onto a full-scale model of a tunnel for the mock-up test. Evaluation of shotcrete performance included an analysis of the development of compressive strength and a comparison of results with criteria from the relevant code of practice, the New Austrian Tunnelling Method. Based on laboratory experiments, optimization, and in-situ measurements, the mock-up tests proved shotcrete containing crumb rubber and FBC-TC is applicable for full-scale use.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TH02010206" target="_blank" >TH02010206: Significant economic and material savings in the construction of underground line structures due to incorporating fly ash and secondary waste into the concrete tunnel lining</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Name of the periodical

Case Studies in Construction Materials

ISSN

2214-5095

e-ISSN

2214-5095

Volume of the periodical

11

Issue of the periodical within the volume

December

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

1-12

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85063753724