2021
DOI: 10.1061/(asce)mt.1943-5533.0003765
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Evaluation of the Pozzolanic Activity of Uncontrolled-Combusted Sewage Sludge Ash

Abstract: This paper evaluates the pozzolanic activity of sewage sludge ash (USSA) obtained following an uncontrolled-combustion process, a simple and economic procedure. Compressive strength of Portland cement/USSA mortars with different percentage of USSA (5-25 wt.%) were evaluated, as well as calcium hydroxide/USSA (CH/USSA) and Portland cement/USSA (PC/USSA) pastes were chemically and physically characterised. The compressive strength of the mortars was increased as Portland cement replacement level by USSA was incr… Show more

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