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Performance Grade HiMA Specifications

 

The table lists specification for the following types of HiMA PMA:

 

Climate-based HiMA grades:

PG76E-22 (recommended base binder (bitumen): PGXX-28 to meet viscosity requirement)

PG76E-28 (recommended base binder (bitumen): PGXX-28)

PG70E-34 (recommended base binder (bitumen): PGXX-34)

 

Special grade used to improve pavement resistance to studded tire damage:

PG64E-40 (follow this link to read a case study)  

 

Property ***

Aging

Test method

Unit

Limits

Comments

*** Rotational viscosity at 135 °C

Unaged

AASHTO T 316

ASTM D4402

Pa×s

≤3.0

Maybe be changed to ≤5Pa×s at the discretion of the specifying agency.

Storage stability

(difference in softening point)

Unaged

ASTM D7173

°C

≤ 5

Helps prevent material phase separation in storage

MSCR %R at 3.2kPa at high temperature PG grade

RTFO aged*

AASHTO M 332/T 350

ASTM D7405

%

≥90%

Ensures highly flexible material

MSCR Jnr at 3.2kPa at high temperature PG grade

RTFO aged

AASHTO M 332/T 350

ASTM D7405

1/kPa

≤ 0.1

Provides resistance to permanent deformation

G* x sin δ at climatic intermediate PG grade temperature

PAV aged*

AASHTO T 315

ASTM D7175

kPa

≤5000

Select test temperature based on climatic PG grade, not the HiMA PG grade

BBR Creep Stiffness at low temperature PG + 10 °C

PAV aged

AASHTO T 315

ASTM D6648

MPa

≤300

 

BBR Creep Stiffness at low temperature PG + 10 °C

PAV aged

AASHTO T 315

ASTM D6648

MPa

≥0.300

 

*** This requirement may be waved at the discrection of the specifying agency if the supplier warrants that the
asphalt binder can be adequetly pumped and mixed at tempratures that meet all applicable safety standards.


Polymer content in bitumen**

7.0-8.0 wt%

Content necessary for generation of continuous polymer network in asphalt binder

 * RTFO and PAV aging performed according to AASHTO T 240 / ASTM D2872 and AASHTO R 28 / ASTM D6521 respectively

** The appropriate content should be ensured by the PMA supplier

 
 


 

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