GUIDELINES FOR SATELLITE STUDIES OF PAVEMENT PERFORMANCE

Abstract

GUIDELINES TO UTILIZE THE RESEARCH FINDINGS FROM THE AASHO ROAD TEST AT OTTAWA, ILLINOIS, ARE PRESENTED. THE GUIDELINES PRESENT A METHOD OF STUDYING THE INTERRELATIONSHIPS OF PERFORMANCE VARIABLES AND DESIGN VARIABLES OF SELECTED PAVEMENT SECTIONS SO THAT COMPARISONS MAY BE MADE. THREE TYPES OF DESIGN VARIABLES ARE DISCUSSED' THE STRUCTURAL VARIABLE WHICH DESCRIBES THE STRENGTH CHARACTERISTICS OF PAVEMENT LAYERS, THE LOAD VARIABLE REPORTED IN TERMS OF ACCUMULATED AXLE LOADS, AND THE CLIMATIC OR REGIONAL VARIABLE WHICH DESCRIBES EXTERNAL INFLUENCES. PERFORMANCE VARIABLES ARE DISCUSSED IN TERMS OF SURFACE BEHAVIOR AND INCLUDE DEFORMATION AND DETERIORATION. THE GUIDELINES HAVE TWO PURPOSES' /1/ TO SET OUT PRINCIPLES AND RULES THAT CAN BE USED TO DEFINE AND OBSERVE PAVEMENT UNITS IN SATELLITE STUDIES, AND TO PRESENT PROCEDURES FOR RELATING THE OBSERVATIONS TO THE AASHO ROAD TEST FINDINGS, AND /2/ TO PROVIDE BASES FOR DATA FROM INDIVIDUAL STUDIES TO BECOME PART OF AN OVERALL PATTERN OF RELATED OBSERVATIONS THAT ARE PERTINENT TO THE TESTING OF HYPOTHESES AND THEORIES OF PAVEMENT DESIGN.