Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

10. lvrm ch12 ukraine materials

ukraine materials

  • Login to see the comments

  • Be the first to like this

10. lvrm ch12 ukraine materials

  1. 1. MATERIALS •Surfacing StandardsSurfacing Standards •Soil and Aggregate PropertiesSoil and Aggregate Properties •Aggregate DesignAggregate Design •Soil StabilizationSoil Stabilization •CompactionCompaction •Quality Control/Sampling and TestingQuality Control/Sampling and Testing •Quarry Development and ReclamationQuarry Development and Reclamation
  2. 2. Babeldoab Island, Palau Hydrated tubular halloysite soil Bob Gavenda NRCS
  3. 3. Dust and Palliatives D. Elton
  4. 4. STABILIZERS AND DUSTSTABILIZERS AND DUST SUPPRESSANTSSUPPRESSANTS • Cement, Lime, Fly Ash, Asphalt,Cement, Lime, Fly Ash, Asphalt, WaterWater • Moisture Absorbing Products (Hygroscopic materials):Moisture Absorbing Products (Hygroscopic materials):  Calcium chlorideCalcium chloride  Magnesium chlorideMagnesium chloride  Sodium chlorideSodium chloride • Organic Petroleum Products:Organic Petroleum Products:  Asphalt emulsionsAsphalt emulsions  Liquid asphaltLiquid asphalt  Dust oilsDust oils  Modified asphalt emulsionModified asphalt emulsion • Organic Non-Petroleum Products:Organic Non-Petroleum Products:  LignosulfonatesLignosulfonates  Animal FatsAnimal Fats  Tree Resins, MolassesTree Resins, Molasses  Tall Oils, Vegetable OilsTall Oils, Vegetable Oils • Enzymes, Synthetic Polymers, Clay AdditivesEnzymes, Synthetic Polymers, Clay Additives
  5. 5. Surfacing Alternatives
  6. 6. Aggregate Use and Requirements
  7. 7. Aggregate Surface Design (30 mm, high quality) 0 100 200 300 400 500 600 700 0 10000 20000 30000 40000 50000 60000 Traffic, 18-kip ESALs AggregateThickness,mm CBR - 3 CBR - 5 CBR - 8 CBR - 12 Aggregate Surface Design for 30mm Minus Aggregate of High Quality
  8. 8. Quality Control
  9. 9. DCP
  10. 10. You Get What You Inspect, Not What You Expect
  11. 11. Compaction
  12. 12. Drainage
  13. 13. Separation/Reinforcement
  14. 14. Unpaved Road DesignUnpaved Road Design 00 2020 4040 6060 8080 100100 120120 00 0.50.5 1.01.0 1.51.5 2.02.0 2.52.5 3.03.0 3.53.5 4.04.0 00 11 22 33 44 55 66 77 88 99 1010 1111 1212 1313 CONEINDEXCONEINDEX CBRCBR SHEARSTRENGTH,PSI(C)SHEARSTRENGTH,PSI(C) Relationship between shear strength, CBR, & cone indexRelationship between shear strength, CBR, & cone index C = 4.8 PSIC = 4.8 PSI FOR CBR = 1FOR CBR = 1 Bearing Capacity Factors Unreinforced: With Geotextile: With Geogrid/Geotextile: Typically CBR < 4 NNCC = 2.8= 2.8 NNCC = 5.0= 5.0 NNCC = 5.7= 5.7 With Geogrid: (CBR > 4) NNCC = 5.7= 5.7
  15. 15. 24 “ 15 “ 13 “ WITHOUT GEOTEXTILE WITH GEOTEXTILE WITH GEOGRID/GEOTEXTILE Unpaved Road DesignUnpaved Road Design
  16. 16. Materials Removal Black Cotton Soil
  17. 17. Materials Improvement
  18. 18. Grid RollerGrid Roller
  19. 19. Roadside Borrow Areas
  20. 20. Quarry Development and Reclamation
  21. 21. What is Important?What is Important? • Know your Soils and Traffic • Select the Appropriate Surfacing Standard • Use Appropriate Aggregate Gradation • Consider In-place Soil Stabilization • Use Cost-Effective Local Materials • Use Adequate Q C /Sampling & Testing • Compact your Soils and Aggregates • Drain your Materials • Develop Quarries…then Reclaim Them

×