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Fields for table: AC_LAB_MIX

Field NameCodesData TypeUnitsTest ProtocolDescription
SHRP_ID

VARCHAR2(4)


Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
MARSHALL_FLOW

NUMBER(4)
.01 in

Mean Marshall flow for mixture during laboratory mix design.
HVEEM_STABILITY

NUMBER(3)


Hveem stabilometer value of specimen.
HVEEM_COHESIOMETER

NUMBER(4)
g/25mm

Hveem cohesiometer value of specimen.
VOIDS_MINERAL_AGGR

NUMBER(3,1)
%

Void space between aggregate particles in compacted asphalt concrete.
EFF_ASPHALT_CONTENT

NUMBER(3,1)
%

Calculated effective asphalt content, percent
SUPERPAVE_N_DES

NUMBER(3)


Number of gyrations of compactor used in Superpave mix design.
GYRATION_RATIO

NUMBER(3,1)


Measured gyration ratio.
ASPHALT_GRADE
ASPHALTVARCHAR2(2)


Code for asphalt grade for binder used in mix design.
ASPHALT_GRADE_OTHER

VARCHAR2(40)


Grade of asphalt cement if other than those specified.
PG_HIGH_TEMP

NUMBER(2)


The high temperature grade of performance graded (PG) binders.
STATE_CODE
STATE_PROVINCENUMBER(2)


Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
PG_LOW_TEMP
CONDITIONINGNUMBER(2)


The low temperature grade of performance graded (PG) binders.
HWT_CONDITIONING

VARCHAR2(1)


Code indicating the wet or dry condition of the Hamburg Wheel Tracking Test.
HWT_DEFORM_20000

NUMBER(4,3)
in

The deformation measurement at 20,000 passes during the Hamburg Wheel Test.
HWT_TEST_TEMP

NUMBER(4,1)
deg F

The temperature used during the Hamburg Wheel Tracking Test
TENSILE_STRG_RATIO

NUMBER(3,1)
%

Percentage of Tensile Strength Ratio.
FLOW_NUMBER

NUMBER(1,2)


The number of cycles corresponding to the minimum rate of change.
FLOW_NUMBER_TEMP

NUMBER(3)
deg F

The flow number temperature.
PRODUCTION_TEMP

NUMBER(4,1)
deg F

The planned production temperature of the AC mix .
COMPACTION_TEMP

NUMBER(4,1)
deg F

The planned field compaction temperature of the AC mix .
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
LAYER_NO

NUMBER(2)


Unique sequential number assigned to pavement layers, starting with layer 1 as the deepest layer (subgrade).
MAX_SPECIFIC_GRAVITY

NUMBER(4,3)


Maximum specific gravity used in the asphalt concrete mixture design.
BULK_SPECIFIC_GRAVITY

NUMBER(4,3)


Bulk specific gravity value from mix design.
ASPHALT_CONTENT

NUMBER(3,1)
%

Optimum asphalt content - percent by weight of total mixture.
PERCENT_AIR_VOIDS

NUMBER(3,1)
%

Percent air voids in the mixture.
MARSHALL_STABILITY

NUMBER(4)
lbf

Mean Marshall stability for mixture during laboratory compaction.
NO_BLOWS

NUMBER(2)


Number of blows used to compact AC sample.