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TREMTI 2005 ___ LIME TREATMENT FEED BACK ______

TREMTI 2005 ___ LIME TREATMENT FEED BACK ______. Daniel PUIATTI Daniel.puiatti@lhoist.com. Synopsis. Part 1 : Lime Treatment Durability Part 2 : Diversity of Application Part 3 : Technological Improvements Part 4 : New Lime Based Products Part 5 : Codification.

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TREMTI 2005 ___ LIME TREATMENT FEED BACK ______

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  1. TREMTI 2005___LIME TREATMENTFEED BACK______ Daniel PUIATTI Daniel.puiatti@lhoist.com

  2. Synopsis • Part 1 : Lime Treatment Durability • Part 2 : Diversity of Application • Part 3 : Technological Improvements • Part 4 : New Lime Based Products • Part 5 : Codification

  3. Part 1 : Lime Treatment Durability C022 : INFLUENCE OF CURING TIME, PERCOLATION AND TEMPERATURE ON THE COMPRESSIVESTRENGTH OF A LOAM TREATED WITH LIME R. De Bel et al. (Belgium) Durability of Lime treatment. Positive effect of timeand temperature. Curing time before percolation is benefical. After percolation, remaining Ca++ and pH still allows pozzolanic reactions to go on.

  4. Part 1 : Lime Treatment Durability C117 : INFLUENCE OF WATER SATURATION ON THE GEOTECHNICAL BEHAVIOUR OF A LIME TREATED SILT Pr. J. Maertens et al. (Belgium) Performance increaseafter saturation No clear correlationwith level of compaction Water contents slightly above OMC is beneficial

  5. Part 1 : Lime Treatment Durability C184 : THE EFFECT OF ORGANIC CONTENT ON LIME TREATMENT OF HIGHLY EXPANSIVE CLAY Dr. Th. M. PETRY et al. (Missouri - USA) Lime can modify organic soils (2 to 6% peat). Lime reduces the swell of clayey organic soils. Organic soils need more lime than non organic soils.

  6. Part 1 : Lime Treatment Durability C122 : FROST SUSCEPTIBILITY AND PERFORMANCE OF LIME TREATED SOILS A. C. LOTTMANN (Germany) • Durability of lime treatmentproven on 30 roads. • Lime treatment modifies ahighly frost susceptible soil (class F3) into a less frost susceptible soil (class F2) if : • Lime > 3% • Suitable soils • Professional works ! • Thereby the required frost-resistant thickness of the pavement structure can be minimized.

  7. Part 1 : Lime Treatment Durability C076 : LIME TREATMENT OF EXCAVATED SOILS:STOCKABILITY OF A LIME TREATED SILT Q.Bollens (Belgium) Gradual and substantialimprovement Slight recarbonation (10-15 cm)on the surface protects the stock

  8. Part 2 : Diversity of Applications C036 : REVISITING BRAZILIAN STATE ROAD 377 - A WELL SUCCEEDED CASE OF LIMESTABILIZED ROAD BASE Pr. W. P. Núñez et al. (Brasil) Lateritic soils are improved by lime stabilization(pozzolanic reaction) Lime : 3% to 5% Lime stabilized basesincrease the fatigue lifeof HMA wearing coursesand protect the subgrade against rutting

  9. Part 2 : Diversity of Applications C102 : USE OF VERY HIGH PLASTIC CLAYEY MATERIALS IN FILL CONSTRUCTION (42<PI<59) V. Berche et al. (France) High plastic soilscan be treated with lime Good performance(Ev2 > 50 MPa)can be obtained with2 to 3% of lime

  10. Part 2 : Diversity of Applications C023 : RECYCLING OF MATERIALS FROM URBAN TRENCHES AFTER TREATMENT A.Quibel et al. (France) Material from trench (silt)treated with lime (2%) Possible re-use in trenches,directly under pavements layers, Compaction :Thickness of the layers : 20cm

  11. 9000 7000 Modulus (MPa) 5000 3000 1000 0 0 100 200 300 400 Curing time (days) Part 2 : Diversity of Applications C061 : LABORATORY AND IN SITU EVALUATION OF STABILISATION OF LIMESTONE AGGREGATES USING LIME D.Puiatti et al. (France) • Lime (1%) improvesperformanceof soft limestone • Results confirmedby experimental pavement : • E : 1400 to 3000 MPa after 1 year • Good behaviour after 9 years

  12. Part 2 : Diversity of Applications C103 : ROAD RECLAIMING AND WIDENING. IMPROVEMENT OF ROAD LOAD CAPACITY Pr. M.Iwanski et al. (Poland) Lime treatment (5%) ofthe shoulder (clayey sand)as a subgradefor a road widening Performance immediatelyafter treatment:Ev2 > 52MPa

  13. 120 Mpa ballast 80 Mpa Under ballast 0/31,5mm 15 cm 20 cm 60 Mpa Limestone 0/40mm 35 cm Lime Treatedcapping layer (2%) Embankment Embankment Part 2 : Diversity of Applications C094 : RESTORATION OFRAILWAYS IN PORTUGAL M.Marques et al. (Portugal)

  14. Part 2 : Diversity of Applications C026 : PERFORMANCE OF LIME IMPROVEDRAILWAY SUBGRADE AFTER 5 YEARS IN SERVICE V.Herle (Czech republic) Lime treatment of heterogeneous silty clay soil with rock fragments is possible. The lime-treated soil has substantially improved its strength with time. Behaviour of lime treated soil in the railway subgrade was superior to theuse of concrete panel slabs. Lime treatment is economic, environmentally friendly and fast.

  15. Part 2 : Diversity of Applications C118 : The revalorisation of clay polluted aggregates treated with lime for use in rural and forest roads or subgrades F.Verhelst et al. (Belgium) Optimisation ofthe quarry management Durable Good economics Landscape friendly Simple technique Reduced maintenance

  16. Part 3 : Technological Improvement C152 : IN SITU CRUSHINGAND TREATMENTOF LIMESTONEFOR CAPPING LAYER D.Gandille et al. (France) C133 : EFFECTIVE MOISTURECONTROL OF IN SITUSOIL TREATMENT G.Fondain et al. (France)

  17. Part 3 : Technological Improvement C143 : IN SITU RECYCLING OF EARTH MOVING WASTEWITH « MOBILE WORKSHOP » V.Duclos et al. (France) C073 : USE OF HIGH-PERFORMANCE FIXED INSTALLATIONS TO STABILISE CAPPING LAYERSAND LOCAL PRODUCTS J.Bonvallet et al. (France)

  18. Part 4 : New Lime based Products C139: INFUENCE OF A LIME WITH A REDUCED DUST EMISSIONON THE DEVELOPMENT OF SOIL TREATMENT IN CIVIL ENGINEERING A.Laudet et al. (Belgium) C181 : ENVIRONMENT ANDSAFETY IN SOIL TREATMENT- RN286 IN PARIS AREA -USE OF PRODUCTS WITHREDUCED DUST EMISSION D.Puiatti et al. (France) Economical and safe Respect the environment Respect the neighbourhood Better conditions for the workers

  19. Part 4 : New Lime based Products C093: INJECTION OF MILK OF LIME FOR SOIL TREATMENT C.Joly et al. (France) Milk of Lime (or lime slurry)for the treatment of dry soils. The Injector enables injection,down to 70cm,of the exact quantity of slurry,without any streamingat the surface of the layer. Injection capacity :up to 90 l/m2

  20. Part 5 : Codification C057 : BELGIAN CODE OF GOOD PRACTICE FOR SOIL TREATMENT WITH LIME AND / OR CEMENT J.Detry & al. (Belgium) C104 : THE FRENCH TECHNICAL GUIDE FOR THE TREATMENT OF SOILS WITH LIME AND/OR CEMENT APPLICATION TO THE PAVEMENT LAYERS JC.Auriol et al. (France) C147 : EN14227 PARTS 10-14 - THE EUROPEAN STANDARD FOR HYDRAULICALLY TREATED SOILS J.Kennedy (United Kingdom)

  21. Part 5 : Codification C170 : SOIL IMPROVEMENT WITH HIGHER DEMANDSIN GERMAN GUIDELINES J. Blosfeld (Germany) Transformation of a F3-soil into a F2-soilreduces the thickness of frost resistance road pavementby 10cm ! 3% minimum binder content 70 MN/m² minimum deformation modulus immediately after placement Lime treatment must be finished at the latest 2 months before frost period

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