Mechanical and physical properties of cement blended with sewage sludge ash

Waste Management
P GarcésM V Borrachero

Abstract

The aim of this paper is to evaluate the compatibility of sewage sludge ash (SSA) with various types of commercially available cements (CEM I and CEM II types, cements with several proportions of clinker). The behaviour of mortars fabricated with various percentages (10-30% by weight) of the cement replaced by SSA has been analyzed in terms of workability, mechanical strength, porosity and shrinkage/expansion. SSA exhibits moderate pozzolanic activity; the highest compressive strengths were obtained with 10% of the cement replaced by SSA. The CEM II/B-M (V-LL) 42.5R cement is considered ideal for preparing mortars containing SSA. Shrinkage data demonstrate that sulphates present in SSA are not reactive towards cement.

Citations

Jul 4, 2013·Waste Management·Shane Donatello, Christopher R Cheeseman
Mar 6, 2012·Journal of Hazardous Materials·Yiming LinYixiao Lin
May 20, 2011·Journal of Hazardous Materials·Ana Belén HernandezNicolas Roche
Mar 31, 2015·Environmental Technology·Ari RahmanShinji Mizuhara
Mar 25, 2014·Journal of the Air & Waste Management Association·Shao-Hua Hu, Shen-Chih Hu
Aug 23, 2017·Environmental Technology·Regina Kalpokaitė-DičkuvienėJūratė Čėsnienė
Feb 25, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·D VoukA Baricevic

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