Ultra Thin Lift HMA
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Pre-Construction Testing

Evaluation of Existing Pavement Structure If pavement distreses suggest weak subgrade, or if traffic levels are forcast to increase, check the strength of pavement and subgrade layers with Falling Weight Deflectomer (FWD) or Dynamic Cone Penetrometer (DCP) Recommended
Material Sampling Obtain materials for mix design Required 
Mix Design Conduct mix design in accordance with contract requirements. Required
   

Construction Testing

 Asphalt Cement

 

Supplier generated COA or laboratory testing to comply with contract requirements

Recommended

Emulsified Asphalt

Supplier generated COA or laboratory testing to comply with contract requirements

Recommended

Asphalt Content

From plant produced materials using ignition furnace AASHTO T  308

Required

Additives

 

Supplier generated COA or laboratory testing to comply with contract requirements

Recommended

 Additive Addition Rate

 

Verify amount of additive per mix design by meter reading

Required

Aggregate Gradation

 

From samples obtained prior to addition of binder 

(AASHTO T 11 and  T 27 or ASTM C117 and C136)

or from recovered aggregate from ignition furnace testing using AASHTO T 30

Required

Aggregate Physical Properties

 

Supplier generated COA or laboratory analysis

(AASHTO T 96, T 176 or  ASTM C131, D2419)

Recommended

Mixture Verification

 

Verify material properties of mixture per mix design per contract requirements

Required

Mixture Temperature

 

Probe measurement or infrared temperature gun

Recommended

Control Strip

 

Nuclear gauge per

AASHTO T 355 (ASTM D2950) or Owner Agency equivalent

Recommended

Placement Depth of Material

 

Depth probe measurement

Recommended

Mat Width

 

Tape measurement

Recommended

Material Compacted Density

 

Nuclear gauge AASHTO T 355 (ASTM D2950) or Owner Agency approved method

Recommended

   

Post-Construction Testing

Visual Appearance Verify there are no unacceptable defects  Required
Compacted Density From pavement cores (AASHTO T 166) Recommended
Surface Tolerance 10 ft. (3 m) Straight edge Recommended