LTPP Logo Long Term Pavement Performance Logo

LTPP TSSC Home

Data User's Corner





LTPP TABLE NAVIGATOR: Field View


Fields for table: RHB_CMRAP_MIX_PROP

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.
BULK_SPEC_GRAVITY_MAX

NUMBER(4,3)


Maximum bulk specific gravity of as-placed mixture.
BULK_SPEC_GRAVITY_STD_DEV

NUMBER(4,3)


Standard deviation of bulk specific gravity of as-placed mixture.
NO_BULK_SPEC_GRAVITY

NUMBER(2)


Number of bulk specific gravity tests.
ASPHALT_CONTENT_MEAN

NUMBER(3,1)
%

Mean asphalt content - percent by weight of total mixture.
ASPHALT_CONTENT_MIN

NUMBER(3,1)
%

Minimum asphalt content - percent by weight of total mixture.
ASPHALT_CONTENT_MAX

NUMBER(3,1)
%

Maximum asphalt content - percent by weight of total mixture.
ASPHALT_CONTENT_STD_DEV

NUMBER(3,1)
%

Standard deviation of asphalt content - percent by weight of total mixture.
NO_SAMP_ASPHALT_CONTENT

NUMBER(2)


Number of samples taken to determine percent of asphalt content.
PCT_AIR_VOIDS_MEAN

NUMBER(3,1)
%

Mean calculated air voids as a percent of material volume.
PCT_AIR_VOIDS_MIN

NUMBER(3,1)
%

Minimum calculated air voids as a percent of material volume.
STATE_CODE
STATE_PROVINCENUMBER(2)


Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
PCT_AIR_VOIDS_MAX

NUMBER(3,1)
%

Maximum calculated air voids as a percent of material volume.
PCT_AIR_VOIDS_STD_DEV

NUMBER(3,1)
%

Standard deviation percent air voids.
NO_SAMP_PCT_AIR_VOIDS

NUMBER(2)


Number of samples taken for percent of air voids.
VOIDS_MINERAL_AGGR_MEAN

NUMBER(3,1)
%

Mean voids in mineral aggregate.
VOIDS_MINERAL_AGGR_MIN

NUMBER(3,1)
%

Minimum voids in mineral aggregate.
VOIDS_MINERAL_AGGR_MAX

NUMBER(3,1)
%

Maximum voids in mineral aggregate.
VOIDS_MINERAL_AGGR_STDEV

NUMBER(3,1)
%

Standard deviation voids in mineral aggregate.
NO_VOIDS_MINERAL_AGGR

NUMBER(2)


Number of voids in mineral aggregate tests.
EFF_ASPHALT_CONTENT_MEAN

NUMBER(3,1)
%

Mean effective asphalt content.
EFF_ASPHALT_CONTENT_MIN

NUMBER(3,1)
%

Minimum effective asphalt content.
DATE_COMPLETE

DATE


Date activity was completed.
EFF_ASPHALT_CONTENT_MAX

NUMBER(3,1)
%

Maximum effective asphalt content.
EFF_ASPHALT_CONTENT_STDEV

NUMBER(3,1)
%

Standard deviation of the effective asphalt content.
NO_EFF_ASPHALT_CONTENT

NUMBER(2)


Number of effective asphalt content tests.
ANTISTRIP_AGENT_TYPE
ANTISTRIPNUMBER(2)


Code for the type of antistripping agent used.
ANTISTRIP_AGENT_TYPE_OTHER

VARCHAR2(40)


Type of antistripping agent used if other than those specified.
ANTISTRIP_AGENT_CODE
LIQUID_SOLIDNUMBER(1)


Code indicating whether the antistripping agent was liquid or solid.
ANTISTRIP_AGENT_AMOUNT

NUMBER(3,1)
%

Amount of antistripping agent used in mixture - percent asphalt cement weight if liquid; percent aggregate weight if solid.
MOIST_SUSCEPT_TEST
MOIST_SUSCEPT_TESTNUMBER(1)


Code for moisture susceptibility test type.
MOIST_SUSCEPT_TEST_OTHER

VARCHAR2(40)


Other moisture susceptibility test type.
HVEEM_STABILITY_NO

NUMBER(2)


Hveem stability number from moisture susceptibility tests.
CONSTRUCTION_NO

NUMBER(2)


Event number used to relate changes in pavement structure with other time dependent data elements. This field is set to 1 when a test section is initially accepted into LTPP and is incremented with each change to the layer structure.
TENSILE_STRENGTH_RATIO

NUMBER(3,2)


Tensile strength ratio from moisture susceptibility tests.
PERCENT_STRIPPED

NUMBER(2)
%

Percent stripped value from moisture susceptibility tests.
RETAINED_STRENGTH_INDEX

NUMBER(3)
%

Index of retained strength from moisture susceptibility tests.
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).
SAMPLE_TYPE
SAMPLE_TYPENUMBER(1)


Code indicating how samples were taken.
MAX_SPEC_GRAVITY

NUMBER(4,3)


Maximum specific gravity of a mixture sampled during or soon after construction.
BULK_SPEC_GRAVITY_MEAN

NUMBER(4,3)


Mean bulk specific gravity of as-placed mixture.
BULK_SPEC_GRAVITY_MIN

NUMBER(4,3)


Minimum bulk specific gravity of as-placed mixture.