Towards Sustainable Building Materials: An Experimental Investigation into the Effect of Recycled Construction Waste Aggregate on the Properties of High-Performance Concrete

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0198506" target="_blank" >RIV/00216305:26110/26:0198506 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-5309/15/15/2772" target="_blank" >https://www.mdpi.com/2075-5309/15/15/2772</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings15152772" target="_blank" >10.3390/buildings15152772</a>

Result language

angličtina

Original language name

Towards Sustainable Building Materials: An Experimental Investigation into the Effect of Recycled Construction Waste Aggregate on the Properties of High-Performance Concrete

Original language description

This study presents a comparison of the mechanical properties of selected high-performance concrete mixtures, some of which contained a proportion of recycled concrete aggregate (15% or 30%) as a substitute for natural aggregate. A reference mixture without recycled concrete aggregate was used for comparison. Initially, the properties of concrete containing both the natural and recycled aggregate types were characterized. This was followed by a series of mechanical tests investigating the compressive strength, flexural strength, and chemical resistance (including resistance to de-icing agents and sulfuric acid). The structural performance of reinforced concrete (RC) beams produced from the mixtures was assessed, and surface morphology was evaluated using a digital microscope. The results confirmed that the use of recycled aggregate had a measurable yet limited effect on the properties of hardened concrete. While the compressive strength tended to decrease slightly with an increasing degree of replacement, the flexural strength remained stable in all the mixtures. The tested mixtures demonstrated adequate resistance to de-icing agents and sulfuric acid. Interestingly, specimens subjected to a frost-resistance test showed improved flexural strength, potentially due to ongoing hydration or microcrack healing. In addition, the RC beams with partial aggregate replacement achieved a higher load-bearing capacity compared to the reference beams. The optical surface evaluation method proved to be a valuable tool, complementary to conventional strength testing. This research enhances the current understanding of recycled aggregate concrete and supports its potential forstructural applications.

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

20101 - Civil engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Buildings

ISSN

—

e-ISSN

2075-5309

Volume of the periodical

15

Issue of the periodical within the volume

15

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

1-21

UT code for WoS article

001549436900001

EID of the result in the Scopus database

2-s2.0-105013384052