Sequestrational carbonation of recycled aggregate - the path to circularity and improved concrete quality

• Autorzy: Zawal Daniel

Identyfikatory

DOI

10.15199/33.2025.05.03

Warianty tytułu

PL

Karbonatyzacja sekwestracyjna kruszywa z recyklingu - droga do cyrkularności i lepszej jakości betonu

• Języki publikacji: EN PL

Abstrakty

EN

For about a decade, the carbonation of concrete has been viewed as a way to enable the sequestration of carbon dioxide, previously emitted in cement production processes. CO2 sequestration can be intensified by subjecting recycled aggregate to carbonation. The use of such aggregate in the realization of warm foundation slabs, which are a solution in passive and zero‑energy houses, contributes not only to one of the principles of sustainable construction, which is the circularity of building materials, but also to the improvement of the properties of concrete, such as obtaining greater strength comparing to the use of aggregate not subjected to carbonation. The study shows that the strength increased by an average of about 16% and was comparable to that of concrete with natural aggregate. At the same time, the concrete’s water absorption decreased (13 to as much as 30%) as well as the degree of strength loss in the frost resistance test.

PL

Od prawie dekady karbonatyzację betonu postrzega się jako sposób umożliwiający sekwestrację dwutlenku węgla, wyemitowanego wcześniej w procesach produkcji cementu. Sekwestrację CO2 można zintensyfikować, poddając karbonatyzacji kruszywo z recyklingu. Zastosowanie takiego kruszywa w realizacji ciepłych płyt fundamentowych, stanowiących rozwiązanie w domach pasywnych i zeroenergetycznych, przyczynia się nie tylko do realizacji jednego z założeń budownictwa zrównoważonego, jakim jest cyrkularność materiałów budowlanych, ale również do poprawy właściwości betonu, m.in. uzyskania większej wytrzymałości niż w przypadku zastosowania kruszywa niepoddanego karbonatyzacji. Z przeprowadzonych badań wynika, że wytrzymałość zwiększyła się średnio ok. 16% i była porównywalna z wytrzymałością betonu z kruszywem naturalnym. Jednocześnie zmniejszeniu uległa nasiąkliwość betonu (13 do nawet 30%) oraz stopień utraty wytrzymałości w badaniu mrozoodporności.

Słowa kluczowe

EN

sustainable construction; foundation slab; recycled aggregate; recycled concrete; concrete carbonation; concrete circularity; test procedure

PL

budownictwo zrównoważone; płyta fundamentowa; kruszywo recyklingowe; beton recyklingowy; karbonatyzacja betonu; cyrlularność betonu; procedura badawcza

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Materiały Budowlane
• Rocznik: 2025
• Tom: nr 5
• Strony: 16--25
• Opis fizyczny: Bibliogr. 34 poz., il., tab.

Twórcy

autor

Zawal Daniel

• Uniwersytet im. Adama Mickiewicza, Wydział Nauk Geograficznych i Geologicznych, Poznań

• https://orcid.org/0000-0002-9682-9176

Bibliografia

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