Use of sediment from nanoremediation process in cement composites - PowerPoint PPT Presentation

Use of sediment from nanoremediation process in cement composites Uporaba sedimentov iz procesa nanoremediacije v cementnih kompozitih dr. Anka Ilc, univ. dipl. inž. grad, Structum, d.o.o. Konferenca RusaLCA, 3. – 4. 10. 2016

WASTE WATER SMALL-SCALE SLUDGE WASTE WATER TREATMENT PLANT NANOREMEDIATION SEDIMENT PROCESS GOAL: ZERO SOLID PURIFIED WASTE SYSTEM WATER

WHAT? A water suspension containing iron oxide nano particles with adsorbed pollutants from water. WHERE TO USE IT? - Embankment, - Concrete, - Cement. HOW TO USE IT? - Dry it first, - Use it as suspension.

How does the addition of sediment from nanoremediation process effect concrete properties? - Fresh concrete properties, - Concrete strength and durability, - Environmental issues. MIXTURE CONTENT OF CONTENT OF DRY SUSPENSION [kg/m 3 ] MATERIAL [kg/m 3 ] LABEL R-0 (ETALON) 0 0 R-1 7 0,5 R-2 180 12,1

FRESH CONCRETE PROPERTIES MIXTURE CONTENT OF CONTENT OF DRY SLUMP WATER to FRESH CONCRETE SUSPENSION [kg/m 3 ] MATERIAL [kg/m 3 ] DENSITY [kg/m 3 ] LABEL [mm] CEMENT RATIO R-0 (ETALON) 0 0 210 0,44 2390 R-1 7 0,5 220 0,43 2440 R-2 180 12,1 210 0,50 2340

HARDENED CONCRETE PROPERTIES: COMPRESSIVE STRENGTH MIXTURE CONTENT OF CONTENT OF DRY SUSPENSION [kg/m 3 ] MATERIAL [kg/m 3 ] LABEL R-0 (ETALON) 0 0 R-1 7 0,5 R-2 180 12,1 60 Compressive strength [MPa] 50 R-0 40 R-1 30 R-2 20 10 0 0 5 10 15 20 25 30 35 Time [day]

HARDENED CONCRETE PROPERTIES: DEPTH OF PENETRATION OF WATER UNDER PRESSURE 40 MIXTURE CONTENT OF CONTENT OF DRY Depth of penetration of water [cm] 35 SUSPENSION [kg/m 3 ] MATERIAL [kg/m 3 ] LABEL 30 R-0 (ETALON) 0 0 R-1 7 0,5 [VREDNOST] 25 R-2 180 12,1 20 15 [VREDNOST] [VREDNOST] 10 CONCRETE COLOUR 5 R-1 R-0 R-2 0 R-0 R-1 R-2

CONCLUSIONS • Addition of the sediment does not deteriorate concrete properties significantly. • Heavy metals remediated from water are tied in cement matrix and do not cause environmental problems. • It is possible to use sediment from nanoremediation process in concrete as a water suspension. • It is possible to treat water without solid waste. + THANK YOU FOR YOUR ATTENTION!