ORIGINAL RESEARCH
Application of SSA as Partial Replacement
of Aggregate in Concrete
Marta Kosior-Kazberuk
Faculty of Civil Engineering and Environmental Engineering, Bialystok University of Technology,
Wiejska 45E, 15-351 Białystok, Poland
Wiejska 45E, 15-351 Białystok, Poland
Pol. J. Environ. Stud. 2011;20(2):365–370
KEYWORDS
ABSTRACT
One current method of sludge disposal is incineration. Although incineration reduces the volume of
sludge, it is not a final solution since it generates ash that must subsequently be disposed of. This study assesses
the feasibility of utilizing the ash derived from sewage sludge incineration (SSA) as a component of concrete.
Considering the chemical and physical properties of sewage sludge ash, an attempt was made to introduce
it into concrete as a partial replacement of natural aggregate. The untreated ash was used as lightweight
aggregate. Properties of innovative material derived from sludge and its suitability for concrete technology
were discussed. It was found that the waste aggregate strongly influenced mechanical and physical properties
of concrete, but the strength characteristics required for structural concrete could be reached.
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