The aim of the present work is to investigate the effect of a prolonged leaching test (more than a year) on the microstructure of solidified cementitiouswasteforms. A set of four different cement-based monoliths (Ap, Bp, Cp and Dp) was prepared, and for each series an uncontaminated sample was prepared as reference (A–D). An organoclaywas added in all pastes as pre-sorbent material for the pollutant; a model liquid organic pollutant, 2-chloroaniline (2-CA), was added only in the contaminated ones and different types of admixtures, chosen among those typically employed in the concrete mix-design,were used. After the first 28 days of curing, all the monoliths, contaminated and uncontaminated, underwent a dynamic leach testing (DLT) for more than 1 year in deionized water.

Long-term leaching test of organo-contaminated cement-clay pastes

ZAMPORI, LUCA;GALLO STAMPINO, PAOLA;DOTELLI, GIOVANNI
2009

Abstract

The aim of the present work is to investigate the effect of a prolonged leaching test (more than a year) on the microstructure of solidified cementitiouswasteforms. A set of four different cement-based monoliths (Ap, Bp, Cp and Dp) was prepared, and for each series an uncontaminated sample was prepared as reference (A–D). An organoclaywas added in all pastes as pre-sorbent material for the pollutant; a model liquid organic pollutant, 2-chloroaniline (2-CA), was added only in the contaminated ones and different types of admixtures, chosen among those typically employed in the concrete mix-design,were used. After the first 28 days of curing, all the monoliths, contaminated and uncontaminated, underwent a dynamic leach testing (DLT) for more than 1 year in deionized water.
JOURNAL OF HAZARDOUS MATERIALS
Organic waste; Cement paste; Admixture; Organoclay; Long-term leaching test
File in questo prodotto:
File Dimensione Formato  
JHM 2009 (Gallo Stampino et al.) b.pdf

Accesso riservato

: Altro materiale allegato
Dimensione 2.65 MB
Formato Adobe PDF
2.65 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/560382
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 7
social impact