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This paper describes how to use standard geotechnical equipment as a “gas pycnometer.” The presented “gas pycnometer” is used to determine the solid particle density (SPD) of mechanically and biologically treated (MBT) municipal solid waste (MSW). The measurements were made on waste samples obtained from Marišćina, a Croatian waste management plant. The average SPD value, obtained from 23 fresh samples, was 1.89 g/cm3. In addition, 10 compacted and 3 shredded samples were also tested. Both compacting and shredding caused increases in the average SPD value to 1.91 and 1.93 g/cm3, respectively. The obtained results show good agreement with the average SPD value for waste material based on results collected from the literature. The presented “gas pycnometer” has been proven to be a reliable, cost-effective, and quick solution for the determination of the SPD of MBT waste material. |
