Eco-friendly concrete with scrap-tyre-rubber-based aggregate - Properties and thermal stability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918266" target="_blank" >RIV/60461373:22310/19:43918266 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/19:00332413 RIV/68407700:21610/19:00332413

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0950061819318409" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061819318409</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2019.07.168" target="_blank" >10.1016/j.conbuildmat.2019.07.168</a>

Result language

angličtina

Original language name

Eco-friendly concrete with scrap-tyre-rubber-based aggregate - Properties and thermal stability

Original language description

Increasing amount of waste tyres represents a global problem as tyres can pose a risk to the environment if not treated properly. Recycling of waste tyre rubbers in civil engineering as aggregate in cement concrete can be an effective environmental and economic approach. As problems associated with the use of waste tyre rubber in concrete production are not completely understood, a detailed analysis of rubber concrete prepared from used tyre rubber-based aggregate involving testing of its mechanical, basic physical, microstructural, hygric and thermal properties, and behaviour after exposure to elevated temperatures is presented in this paper. Testing of mechanical performance included measurement of compressive strength, flexural strength, secant and dynamic modulus of elasticity. Thermal conductivity was determined in the dependence on moisture content, from the dry to fully water saturated state. Dry volumetric heat capacity was also tested. Specific attention was paid to the hygric performance of rubberized concrete that was characterised by the water and water vapour transport parameters. Investigation of concrete properties after its thermal exposure included testing of mass loss, mechanical resistance, bulk density, and thermal conductivity that was tested as property having direct relation to concrete structural parameters. The use of scrap-tyre-rubber aggregate resulted in a decrease of the unit weight, worsening in mechanical parameters and a significant reduction in thermal conductivity of prepared rubberized concrete. Rubber-based aggregate almost did not affect water transport properties, while water vapour transport properties increased with rubber amount in the mix. No significant changes on concrete characteristics related to rubber incorporation occurred at temperatures up to 300 degrees C. However, after exposure to 400 degrees C, significant changes in measured concrete properties were observed, which was in line with the thermogravimetric analysis of the used tyre-based rubber. Nevertheless, based on rubberized concrete functional properties at common ambient conditions it can be considered as an alternative lightweight material, bringing benefits to the environment and economy as it is produced from crap available in a large amount and at a negligible cost. (C) 2019 Elsevier Ltd. All rights reserved.

Czech name

—

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

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GA17-04215S" target="_blank" >GA17-04215S: Thermal insulation composites containing waste plastic based fillers</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Construction and Building Materials

ISSN

0950-0618

e-ISSN

—

Volume of the periodical

225

Issue of the periodical within the volume

NOV 20 2019

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

709-722

UT code for WoS article

000488305700061

EID of the result in the Scopus database

2-s2.0-85069809744