Base Stabilization
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Pre-Construction Testing

Evaluation of Existing Pavement Structure For reconstruction, if pavement distress suggest weak subgrade or if traffic levels are forecast to increase, check strength of base and subgrade layers with Falling Weight Deflectometer (FWD) or Dynamic Cone Penetrometer (DCP) Recommended 
Ground Penetrating Radar (GPR) For reconstruction verify thickness consistency of existing asphalt and granular layers Optional
Pavement Sampling For reconstruction obtain materials for mix design and verify thickness of pavement layers Required
Stockpile Samplind For new construction obtain samples of aggregates for mix design  Required
Mix Design Conduct mix design for bituminous or cementitious stabilization in accordance with FDR201 or FDR202, respectfully Required

Construction Testing

Test

Description

Bituminous Stabilization

Chemical Stabilization

 Asphalt for Foaming

Supplier generated COA or laboratory testing to comply with mix design parameters

Recommended

N/A

Emulsified Asphalt

 Supplier generated COA or laboratory testing to comply with mix design parameters

Recommended

N/A

 Cement, CKD, Self-Cementing Class C Fly Ash, Lime and LKD

Supplier generated COA

Recommended

(if applied as an additive)

Recommended

 Asphalt Temperature for Foaming

Probe or infrared temperature gun

Required

N/A

Asphalt Foaming Properties

Expansion Ratio and Half-life

Required

N/A

Emulsified Asphalt

Visual sieve test on site

Recommended

N/A

Emulsified Asphalt Temperature

Probe or infrared temperature gun

Recommended

N/A

Bituminous Stabilizing Agent Injection Rate

 

Verify amount of stabilizing agent per mix design and accuracy of meter readings by

volumetric distribution

Required

N/A

 Cement,CKD, Self-Cementing Class C Fly Ash, Lime or LKD Dry Spread Rate

Volumetric distribution

Required

(if applied as an additive)

Required

Cement or Lime Slurry Application Rate

Volumetric distribution

Required

(if applied as an additive)

Required

Cement or Lime Slurry Solids

% solids by drying or hydrometer

Recommended

(if applied as an additive)

Recommended

Aggregate Gradation

Supplier generated COA or laboratory analysis

(AASHTO T 11 and  T 27 or

ASTM C117 and C136)

Required

Required

Aggregate Physical Properties

Supplier generated COA or laboratory analysis

(AASHTO T 96, T 176 and T 85 or  ASTM C131, D2419 and  C127)

Recommended

Recommended

Aggregate Addition Rate

Volumetric distribution

Required

Required

Ambient Temperature

Any Owner Agency approved method

Required

Required

Moisture Content of Stabilized Mixture

AASHTO T 329

AASHTO T 265, ASTM D2216 or ASTM D4643

Required

Required

Stabilization Application and Mixing Time Constraints

Timepiece

N/A

Required

Depth of Stabilized Material

Depth probe measurement

Required

Required

Control Strip

Nuclear gauge per

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

Required

Required

Compaction Time Constraints

Timepiece

N/A

Required

Stabilized Material Compacted Density

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

Required

N/A

Stabilized Material Compacted Density

Nuclear gauge AASHTO T 310

(ASTM D6938) or Sand Cone AASHTO T 191 (ASTM D1556)

N/A

Required


Post-Construction Testing

Cross-Slope 6 ft. (1.8 m) Smart level Required
Mat Width Tape measurement Required

Mat Moisture Content after Curing

(Bituminous Stabilization Only)

AASHTO T 329 or AASHTO T 265 (ASTM D2216 or ASTM D4643) Required

Surface Tolerance

10 ft. (3 m) Straight edge Recommended