Journal
WASTE MANAGEMENT
Volume 23, Issue 4, Pages 373-381Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0956-053X(03)00034-5
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The influence of sewage sludge ash (SSA) on workability of cement mortars has been studied. The irregular morphology of SSA particles produced a decrease of mortar workability. A nonlinear reduction of workability in mortars containing SSA was observed, but when SSA content in mortars was increased the workability reduction was less significant. A superplasticizer is used in order to compensate the decrease of workability produced by SSA. When SSA sized fractions were used, only significant differences in workability for mortars prepared with high water volumes or with the presence of superplasticizer were observed. (C) 2003 Elsevier Science Ltd. All rights reserved.
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