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[54700] Artykuł:

The Effect of Sewage Sludge Ash On Properties of Cement Composites

Czasopismo: Procedia Engineering   Tom: 161, Strony: 1018-1024
ISSN:  1877-7058
Wydawca:  ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Opublikowano: 2016
Seria wydawnicza:  Procedia Engineering
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
Wojciech Piasta orcid logoWBiAKatedra Technologii i Organizacji Budownictwa *****5015.00  
Monika Łukawska50.00  

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:

sewage sludge ash  fly ash  setting time  compressive strength  chemical and mineral composition 


Abstract:

The results of research on sewage sludge ash (SSA) and fly ash (FA) and the effect of these ashes on properties of fresh pastes and hardened mortars have been presented. The chemical composition, specific surface area and grading of SSA were determined. By means of XRD analysis, the occurrence of crystalline materials was detected and by means of SEM the morphology of ashes was investigated. By means of Vicat's softening point the initial and final times of setting were defined. The replacement of cement with 10 or 20% SSA resulted in setting times extension. The chemical composition may suggest that setting times extension was caused by the occurrence of phosphorus in SSA. The standard compressive strength of 10% and 20% SSA mortars were lower. The partial replacement of cements with SSA ash makes the kinetics of strength development slow down. However, the long-term increase in compressive strength of mortar was higher compared to OPC mortar. It means that it was partially similar to the influence of the fly ash. (C) 2016 The Authors. Published by Elsevier Ltd.


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