Development of a Low-pH Concrete Intended for Deep Geological Repository for Radioactive Waste

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F23%3A00362437" target="_blank" >RIV/68407700:21610/23:00362437 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/buildings13010182" target="_blank" >https://doi.org/10.3390/buildings13010182</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings13010182" target="_blank" >10.3390/buildings13010182</a>

Result language

angličtina

Original language name

Development of a Low-pH Concrete Intended for Deep Geological Repository for Radioactive Waste

Original language description

This article deals with the development of concretes intended to be used as construction materials in the Czech deep repository for radioactive waste. The basic requirements for this concrete are a reduced pH value, which must maintain a constant reduced pH with a value of around 11 in the long term, and mechanical properties comparable to conventional concrete. The raw materials for the production of the proposed low pH concrete come exclusively from the Czech Republic. Material characteristics were measured on fresh mixtures and concrete after 28, 56, and 90 days of curing. In addition to the basic raw materials (aggregate, cement, water), plasticizers, microsilica or slag, and defoaming agents were added to the mixture. The aggregate:binder ratio was approximately 5:1 and the w/c water coefficient was approximately 0.6. The mechanical properties of the final concrete were similar to the reference recipe of conventional concrete (the decrease was less than 10%) and the pH value was even below 11 after 90 days. The issue of a sprayed variant of the LPC mixture was solved within the project.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Buildings

ISSN

2075-5309

e-ISSN

2075-5309

Volume of the periodical

13

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

17

Pages from-to

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UT code for WoS article

000917016700001

EID of the result in the Scopus database

2-s2.0-85146772693