Pozzolanic activity of sewage sludge ash with respect to its calcination and chemical composition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43918378" target="_blank" >RIV/60461373:22310/17:43918378 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.5593/sgem2017/62/S26.045" target="_blank" >http://dx.doi.org/10.5593/sgem2017/62/S26.045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2017/62/S26.045" target="_blank" >10.5593/sgem2017/62/S26.045</a>

Result language

angličtina

Original language name

Pozzolanic activity of sewage sludge ash with respect to its calcination and chemical composition

Original language description

The handling and disposal of voluminous sludge produced from water treatment plants poses difficulty to environmental scientist and engineers. In fact, its environmental friendly management and disposal is challenging task and requires careful consideration. In this study, sewage sludge ashes were examined as potentially supplementary cementitious materials. The raw sewage sludge was provided by two different municipal waste water treatment plants, coming from Poland and Greece respectively. The calcination of preliminary dried sewage sludge was done at 700 °C in order to remove organic matter that would negatively affect setting and hardening of cement blends. For both raw and thermally treated materials, chemical composition was studied using XRF. The morphology of sewage sludge ash was characterized by SEM and mineralogical composition was evaluated by XRD analyses. Calcination process was monitored by STA. The pozzolanic activity was analyzed by Frattini test and measurement of strength activity index of cement pastes, where sewage sludge substituted 10 % of Portland cement by mass. The both analyzed ashes contained silica, alumina, calcium and iron oxides in significant amounts. The high amorphous content resulted in a good pozzolanic activity and high strength activity index.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA17-02815S" target="_blank" >GA17-02815S: Research and development of high performance composites containing biomass ash</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM

ISBN

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ISSN

1314-2704

e-ISSN

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Number of pages

7

Pages from-to

343-349

Publisher name

SGEM International Multidisciplinary Scientific Geoconference

Place of publication

Sofia

Event location

Albena

Event date

Jun 29, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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