The paper presents the results of model tests carried out in a semi-technical scale. Author have been trying to answer the question, how the embankment lifting water made of the ash-slag mixture would behave and what kind of the possible filtration damages would occur in particular parts of the structure. It was verified in the conducted tests whether the applied kind and method of building up the geo-synthetic polymer barrier /GBR-P/ and the draining elements would ensure the safe working conditions of the structure. There were determined in laboratory tests the changes of the filtration curve location in the body of the hydraulic embankment without sealing elements and with the GBR-P screen. The tests revealed, that the furnace waste such as the ash-slag, cannot be used in hydraulic engineering without proper procedures. It may be building in geosynthetic sealing elements and drainage preventing from suffusion and liquefaction. ...
In the article results of laboratory tests of a puncture resistance with a pyramid carried out on chosen needle punched non-woven geotextiles of basic weight from 150 do 1200 g • m-2 are presented. Values of the puncture strength were compared for geotextiles placed on a rigid and soft support. According to PN-EN 14574:2006P a rigid support was an aluminum plate. Ash-slag mixture, compacted in a cylinder at compaction indexes of Is=0.90, 0.95 and 1.00 was used as a soft support.It was observed that the puncture strength values on the rigid support are increasing proportionally to the basic weight. The value of the strength needed to puncture tested sample on the soil ground is decreasing along with the increase in the compaction index. Puncture of the geotextiles placed on the soft support required higher strengths in comparison to the rigid support and caused large deformations of the geotextiles. ...
