Abstract
The aim of this study is to systematically quantify the physical and chemical properties of the cement based solidified/stabilised heavy metal waste with increasing replacement of cement by PFA. Bulk density and unconfined compressive strength are measured as the physical parameters. The equilibrium extraction tests, sequential chemical tests and dynamic leaching tests are reported as chemical characteristics. The results showed PFA-blended cement-based waste forms have higher porosity and lower strength than the pure cement-based waste forms at experimental curing time. The lower alkalinities of the PFA-blended cement-based waste forms, however, lead to higher leach rates of heavy metals when the waste is exposed to an acidic medium.
| Original language | English |
|---|---|
| Pages (from-to) | 276-283 |
| Number of pages | 8 |
| Journal | Waste Management and Research |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jan 2001 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 12 Responsible Consumption and Production
Keywords
- Cement
- Chemical stabilisation
- Hazardous waste
- PFA
- Solidification
ASJC Scopus subject areas
- Environmental Engineering
- Pollution
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