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PAVEMENT EVALUATION (CEMENT-TREATED BASE, CTB) (Degree of Compaction…

- - - - Involves the extraction of road based materials for laboratory testing and analysis.
  - - - Determine the bulk specific
        gravity of cored sample.
  - - - Formula = specific gravity core (on site) x 100% / specific gravity Marshal (lab)
  - - - Wearing course
        
        98% - 100% Marshall Density
      - Binder course
        
        95% - 100% Marshall Density
- - - - To determine the amount of bitumen that is actually used as binding content in asphaltic pavement or asphaltic concrete recently laid at site.
  - - - Determine the bitumen content
  - - - Wearing course
        
        Allowable limit is within ± 0.2%
      - Binder course
- - - - assess the particle size distribution of a granular material
        
        by allowing the material to pass through a series of sieves and weighing the amount of material that is stopped by each sieve as a fraction of the whole mass.
  - - - Percentage passing versus sieve size
  - - - Curve that higher than the upper limit.
        
        Too much fine aggregates
      - Curve that lower than the lower limit.
        
        Too much coarse aggregates
    - - Good aggregate gradation