TY - JOUR N2 - The amount of waste from washing dolomite aggregates increases continuously. Aggregates are washed to remove clayey pollutants.They consist of a large amount of clay minerals and carbonates. Their properties and amount depends on the type of raw material and type of washing technology. Utilization of waste from washing aggregates is common problem and has not been sought out yet. Their usage as the raw material in ceramics might be environmentally friendly way to utilize them. This paper presents technological properties, phase composition and microstructure analysis of materials made of waste sludge from washing dolomite aggregates. Research was divided into three parts: technological properties analysis, phase composition analysis and microstructure analysis. Samples made of waste dolomite sludge were formed in laboratory clay brick vacuum extruder and fired at 900, 1000 and 1100°C. For final materials, apparent density, open porosity, water absorption, compressive strength and durability were examined. Results of technological research suggest the possibility of the application of the waste sludge from washing aggregates in building ceramics technology as bricks materials. Waste sludge from washing dolomite aggregates can be used as the main raw material of building ceramics masses. Without any additional technological operations (e.g. drying or grinding), the material with satisfactory properties was obtained. According to durability results all obtained materials can be used for masonry protected against water penetration and without contact with soil and ground water and also for masonry subjected to passive exposure (F0 – according to the standard EN 771-1). L1 - http://journals.pan.pl/Content/112127/PDF/K%C5%82osek-Wawrzyn-i-inni.pdf L2 - http://journals.pan.pl/Content/112127 PY - 2019 IS - No 3 EP - 48 DO - 10.24425/gsm.2019.128532 KW - properties KW - ceramic materials KW - dolomite sludge KW - building ceramics KW - waste sludge from washing dolomite aggregates A1 - Kłosek-Wawrzyn, Ewelina A1 - Łój, Grzegorz A1 - Bugaj, Anna A1 - Wons, Wojciech PB - Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN PB - Instytut Gospodarki Surowcami Mineralnymi i Energią PAN VL - vol. 35 DA - 2019.09.30 T1 - Waste sludge from washing dolomite aggregates as a raw material for brick production SP - 37 UR - http://journals.pan.pl/dlibra/publication/edition/112127 T2 - Gospodarka Surowcami Mineralnymi - Mineral Resources Management ER -