Utilization of Ground Eco-Filler Actived by High-Speed Multi Level - PowerPoint PPT Presentation

Utilization of Ground Eco-Filler Actived by High-Speed Multi Level Mill in Civil Engineering with partners

LAVARIS Ltd. company (Libčice near Prague, CZ) • Recycling Lines: rubber granulate, concrete dust and stone sludge/dust. • Technology: active rubber powder, concrete and stone powder science and applied research. • Customer Service: • Research center • Service and spare part • Consulting • Design • Optimalization

Assembly Line

Recycling Line Variable layout, components according to requirements . Stationary Version: Drying Activation Homogenization Light-Weight Blocks Mobile Version:

High-Speed Mill Key Component of the Recycling Lines • Stationary Line Power plant Productivity Model [kW] [t/hours] SBD 251 2 × 15 0.25 SBD 401 1 × 10 0.15 Screener SBD 600 2 × 30 0.80 SBD 600 SBD 800 2 × 55 3 – 5 SBD 1000 2 × 110 4 – 7 SBD 150 • Mobil Line Power plant Productivity Model [kW] [t/hours] MBD 251 2 × 15 0.25 SBD 300 MBD 401 1 × 10 0.15 MBD 600 2 × 30 0.80 SBD 600 MBD 800 2 × 55 3 – 5

High-Speed Mill Design of Homogenizing Mill D550 Hammer Mill

High-Tech Technologies Anti-Vibration and Acoustic Barrier Recycled Rubber Filtration – Polymer Nanofiber Textiles Dust-Free Design Self-Supporting Power Unit – Photovoltaic Panel with Tracker Photo: dynamix/sxc.hu

Some Model Materials West Bank of Jordan River and Egypt raw material milled Marble industry (http://mines.pajhwok.com) Optical microscopy (80 × ) Electron microscopy (100 × )

Model Material (West Bank) Sand 0 – 2 mm Cement Stone sludge Controlled grain-size distribution Frakce 2 – 4 mm Frakce 0 – 2 mm

Complete Building System • variable layout, • components according. to requirements Reference house from recycled materials – student project.

Masonry Block low cement content recycled material to 90 % wt. Exterior Plasters compressive strength 12 MPa stone microfiller to 70 % wt heat accumulation compressive strength > 6 MPa acoustic barrier optimized for low shrinkage good adhesion Bed-Joint Mortar Interior Plasters stone dust filler to 80 % wt. stone microfiller to 90 % cement 20 % wt. compressive strength > 4 MPa compressive strength to 9 MPa optimized for low shrinkage good adhesion good adhesion

Controlled Modification of Utility Properties 2D or 3D Nanohydrophobization Light-Weight Blocks (no need for heating)

Experimental/Standard Testing on Nano/Micro/Macro Level Application / Real Conditions

Use of Concrete Microfiller Sample Density Specific surface  determination of density and specific (kg.m -3 ) (m 2 kg -1 ) Grinded concrete (KR) 2,432 3,737 surface (Blaine); Grinded concrete (DR) 2,547 3,884  comparison with Reference material (CEM I/32,5 N) 3,096 0,421 standard cement. Original crushed Grinded material Grinded material cocrete (KR) (DR) Compound (%) (%) (%) 66.01 66.02 66.88 SiO2  chemical analysis and 0.13 0.13 0.13 TiO2 comparison of recycled 3.72 3.74 3.12 Al2O3 concrete and mechanically Fe2O3 1.24 1.25 0.31 activated concrete FeO 0.32 0.35 3.17 microfiller. MnO 0.03 0.03 0.06 MgO 1.11 1.12 1.4 CaO 15.48 15.52 13.75 Na2O 0.45 0.46 0.44 K2O 0.99 0.99 0.94 P2O5 0.03 0.03 0.03 H2O- 1.67 1.54 0.94 H2O+ 3.79 3.77 4.76 CO2 4.59 4.6 4.4 S tot 0.3 0.3 0.25

Application in Cold Pavement Recycling Pulverized concrete from railroad ties 3.5E 3.5E 3.5E 3.5E 4.5F+ 4.5F 4.5F 4.5F 4.5F 2.5F 2.8F+ 2,5F Mix + + + + 1.5C+ + + + + + 10.6L + 5PC 3PC 5ML 3ML 1.5PC 5PC 3PC 5ML 3ML 9.6PC 0/2 3PC RAP 0/22 0/11 0/22 Bit. emulsion 3.5 3.5 3.5 3.5 - Foamed bitumen - 4.5 4.5 4.5 4.5 4.5 2.5 2.8 2.5 PC 5.0 3.0 - 1.5 5.0 3.0 - 9.6 - 3.0 ML - 5.0 3.0 - 5.0 3.0 - Limestone 0/2 10.6 - - Cement - 1.5 -

Application in Cold Pavement Recycling  cold mix variations with bitumen emulsion and cement;  substitution of cement by milled limestone or pulverized concrete;  results of indirect tensile strength.  cold mix variations with foamed bitumen and cement;  substitution of cement by milled limestone or pulverized concrete;  results of indirect tensile strength

Cold Pavement Recycling with Activated Fly-Ash REC REC REC REC REC REC REC REC REC Mix design REF P01 P02 P03 P04 P05 P06 P07 P08 Water 4.5% 4.5% 5.0 % 5.5% 5.5% 5.0% 5.0% 5.0% 5.5% Cement CEM II/B - S32,5R 3.0% - - 1.0% - - - 1.0% 1.0% Bituminous emulsion C60B7 3.5% 3.5% 3.5 % 2.5% 3.5% 3.5% 3.5% 2.5% 2.5% Fly-ash (Ledvice) - 3.0% 7.5 % 10.0% - - - - - Bottom- ash (Počerady) - - - - - - - 10.0% 15.0% Mechanically activated fly- ash - - - - 3.0% 7.5% 10.0% - - Reclaimed asphalt material 0/11 89.0% 89.0% 84.0 % 81.0% 88.0% 84.0% 81.5% 81.5% 76.5% Indirect tensile strength (MPa) Mix ITSR* Decrease of ITS Frost susceptibility 7 air 14 air 7 air + 7 water 28 air REC REF 0.45 0.84 0.56 0.91 0.68 1.24 0.91 REC P01 0.71 1.05 0.78 0.82 0.74 1.10 - REC P02 0.51 0.58 0.43 0.82 0.74 0.84 0.88 REC P03 0.4 0.55 0.41 0.63 0.74 1.02 0.60 REC P04 0.66 0.63 0.54 0.65 0.86 0.82 - REC P05 1.14 1.18 1.37 1.42 1.16 1.20 0.88 REC P06 1.23 1.19 0.97 1.63 0.82 0.79 0.81 REC P07 0.49 0.51 0.42 0.66 0.82 0.86 - REC P08 0.41 0.49 0.40 0.55 0.82 0.98 -

Micromilled Limestone for Asphalt  use of various limestone waste dust or sludge products;  high pulverization coefficient reached by applying a continuous milling without any additional surfactant additive (example: Czech limestone from Krty location – one milling cycle with 0-4 mm grading);  material on the edge between micro- and nano-particles with broad range of applications (by far not only limited to building industry). 18

Micromilled Limestone for Asphalt  Use of pulverized limestone as an active filler for improving asphalt mixture durability – example of dolomitic limestone 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Reference mix Mech. activated Filter fly-ash Bottom-ash AdHere (type A) Limestone filler (no additive) dolomite + dolomite 19

Application in Road Infrastructure  Mechanical chemical activation is believed to transform some waste materials into a raw material suitable for cold recycled mixes or soil stabilizations.  Properties improved in time.  In the case of pulverized recyclable concrete additions of this material modified by high-speed milling resulted in a slight reduction of stiffness and indirect tensile stress; however, the reduction is far from essential and mixes containing pulverized concrete had no problems meeting the requirements .  The optimal content of added pulverized concrete around 5-7 %.  Pulverized limestone effective in asphalt mixtures.  Potential also for other by-products like e.g. fly-ash (another alternative binder).