20.500.12556/DiRROS-16480 Drava river sediment in clay brick production characterization, properties, and environmental performance The ever-growing worldwide demand for fired clay brick has resulted in the shortage of clay in many parts of the world. Therefore, there is a need to look for more sustainable alternative materials for the brick manufacturing. This study has investigated the potential use of the untreated Drava River sediment as a substitute material for clay in the production of fired bricks, with the research being conducted at both laboratory and industrial level. At the laboratory level, brick specimens were prepared by mixing clay with different river sediment proportions (ranging from 10 to 50 wt%) and were fired at 950 °C, with microstructural and various physical–mechanical properties being analyzed. Elevated carbonate content in Drava river sediment results in higher weight loss during firing at temperatures up to 950 °C, comparing to firing pure brick-making clay. Consequently, the addition of sediment increases porosity of fired bricks, which results in lowering of their mechanical properties. Results reveal that the compressive strength of the pure clay sample was 79.5 MPa, while the compressive strength of the sample with the addition of river sediment from 10 wt% to 50 wt% decreased from 73.9 MPa to 26.2 MPa, respectively. Despite the lower compressive strength, the 26.2 MPa is still above the limit value of 10 MPa specified in the standard EN 772–1 [1]. At the industrial level, hollow clay bricks were prepared with 20 wt% of the river sediment and fired in a tunnel kiln. Inclusion of the river sediment also decreased compressive strength from 38 MPa for pure mixture to 26 MPa for 20 wt% of the sediment addition, confirming usability of Drava sediment in brick production. In addition, LCA study has been conducted to evaluate the environmental impacts associated with the industrial production of classic bricks and bricks with the addition of the river sediment. The obtained results have shown that the bricks made with the addition of the Drava River sediment are sustainable and environmentally friendly and meet all the requirements specified in the relevant regulatory standard. sediments clay masonry units LCA properties sedimenti opeka LCA lastnosti true false true Elsevier Angleški jezik Slovenski jezik © 2023 The Authors. Published by Elsevier Ltd. Neznano 2023-05-03 13:54:18 2023-05-30 13:46:15 2023-06-15 09:52:04 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 11. 4. 2023; str. 1-25 [article no.] 106470 Apr. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-04-11 620.1/.2 2352-7102 10.1016/j.jobe.2023.106470 148408579 https://www.sciencedirect.com/science/article/pii/S2352710223006496?via%3Dihub 1 7a762c98-e998-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22239 RAZ_Bozic_Mojca_2023.pdf RAZ_Bozic_Mojca_2023.pdf 1 1C7F9CE19ADD76361F365B6C984C36DF 466d35bd9bd5d4c896655753ecbb2ca533318d2152896c2000d27f195565f3e1 05c2f338-e999-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22240 RAZ_Bozic_Mojca_2023.docx RAZ_Bozic_Mojca_2023.docx 1 057E1E041A19A6AB152E675D73F950A0 7bb071077c2efc0c7ae8eb13b7c0120a50e92cd67931a35bbe00c5ae85f914b7 0d769622-e999-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22241 Zavod za gradbeništvo Slovenije 0 0 0