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Fields for table: AC_MODIFIER

Field NameCodesData TypeUnitsTest ProtocolDescription
STATE_CODE
STATE_PROVINCENUMBER(2)


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

VARCHAR2(4)


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

NUMBER(2)


Unique sequential number assigned to pavement layers, starting with layer 1 as the deepest layer (subgrade).
PMA_BINDER
PMA_BINDERVARCHAR2(1)


Code indicating the type of mixture from which the binder was taken
ASPHALT_MODIFIER_TYPE
MODIFIERVARCHAR2(2)


Code for type of modifier added to the asphalt cement.
ASPHALT_MODIFIER_TYPE_OTHER

VARCHAR2(40)


Type of modifier added to asphalt cement if other than those specified.
ASPHALT_MODIFIER_QTY

NUMBER(3,1)
%

Amount of modifier added - percent by weight of asphalt cement.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.