Detail publikace

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

GANDEL, R. JEŘÁBEK, J. PĚKNÍKOVÁ, A. TOPOLÁŘ, L. SUCHARDA, O.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

high-performance concrete; recycled aggregate; construction waste

Autoři

GANDEL, R.; JEŘÁBEK, J.; PĚKNÍKOVÁ, A.; TOPOLÁŘ, L.; SUCHARDA, O.

Vydáno

6. 8. 2025

Nakladatel

MDPI

Místo

Switzerland

ISSN

2075-5309

Periodikum

Buildings

Ročník

15

Číslo

15

Stát

Švýcarská konfederace

Strany od

1

Strany do

21

Strany počet

21

URL

https://www.mdpi.com/2075-5309/15/15/2772

Plný text v Digitální knihovně

http://hdl.handle.net/11012/255480

BibTex

@article{BUT198506,
  author="Radoslav {Gandel} and Jan {Jeřábek} and Andrea {Pěkníková} and Libor {Topolář} and Oldřich {Sucharda}",
  title="Towards Sustainable Building Materials: An Experimental Investigation into the Effect of Recycled Construction Waste Aggregate on the Properties of High-Performance Concrete",
  journal="Buildings",
  year="2025",
  volume="15",
  number="15",
  pages="21",
  doi="10.3390/buildings15152772",
  issn="2075-5309",
  url="https://www.mdpi.com/2075-5309/15/15/2772"
}