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[60170] Artykuł:

The Replacement of the Parts of the Aggregate in Concrete with Chalcedonite Powder

Czasopismo: Procedia Engineering   Tom: 195, Strony: 183-188
ISSN:  1877-7058
Wydawca:  IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Opublikowano: 2017
Seria wydawnicza:  IOP Conference Series-Materials Science and Engineering
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Do oświadczenia
nr 3
Grupa
przynależności
Dyscyplina
naukowa
Procent
udziału
Liczba
punktów
do oceny pracownika
Liczba
punktów wg
kryteriów ewaluacji
Anna Kotwa orcid logo WBiAKatedra Technologii i Organizacji Budownictwa *****Niespoza "N" jednostkiInżynieria lądowa, geodezja i transport10015.00.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 15
Klasyfikacja Web of Science: Proceedings Paper


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Keywords:

additionchalcedonite mealcompressive strengthwater absorbabilitycapillarity 



Abstract:

In recent years, many researches have been conducted concerning the influence of chemical admixtures and mineral additions on the properties of concrete mixture and the parametres of hardened concrete. The current state of knowledge is not sufficient for effective use of concrete mixtures with the addition of chalcedonite powder. The development of concrete mixture, in which a part of the aggregate is replaced with chalcedonite powder can become an alternative to concrete as it creates the possibility of management of waste located near the chalcedonite aggregate mines. Chalcedonite powder has the same properties as the aggregate it is created from. That means it is not dangerous but has a negative impact on the natural environment. Obtaining chalcedonite powder is not expensive and will not only lower the costs of concrete mixture production but also have a positive impact on the environment.

The article discusses the results of the laboratory tests on the influence of chalcedonite powder on the physico-mechanical properties of concrete. The meal replaced the aggregates in the amount of 5%, 10%, 15% by their mass. The amount of cement was unchanged. The research concerned the rheological properties of concrete mixtures, i.e. consistency, density, degree of aeration and the parametres of hardened concrete, e.g. compressive strength, capillarity and water absorbability. The addition of meal leads to the decrease in compressive strength. The decrease is related to the amount of the chalcedonite powder in the concrete mixture. Improvement was noticed in water absorbability and capillarity.