PAVEMENT CONDITION EVALUATION : SUMMARY OPEN DISCUSSION FROM THE FLOOR
THREE MAJOR NEEDS FOR CONDITION SURVEYS WERE PRESENTED BY MR. CAREY TO PROVIDE A BASIS FOR MAINTENANCE PLANNING AND CONSTRUCTION CONTROL AND TO DETERMINE THE VALUE OF DESIGN CHANGES. MR. MELVILLE EMPHASIZES THE IMPORTANCE OF THE STRUCTURAL ADEQUACY OF AIRPORT PAVEMENTS TO CARRY THE HEAVY LOADS OF PRESENT DAY AIRCRAFT. THE PRIMARY FUNCTION OF CONDITION SURVEYS HAS BEEN TO DETECT EVIDENCE OF STRUCTURAL WEAKNESS, TO CHECK CURRENT DESIGN PROCEDURE, TO ANTICIPATE FUTURE MAINTENANCE OR STRENGTH, AND TO ACCESS THE EFFECT ON FIELD OPERATION DUE TO POSSIBLE LOAD LIMITATION. A REVIEW IS PRESENTED OF THE ELEMENTS INVOLVED IN USING PAVEMENT CONDITION SURVEYS TO EVALUATE PAVEMENT PERFORMANCE. THE PANEL RECOGNIZES THE DIRECT APPLICABILITY OF SUCH SURVEYS TO THE FOUR MAJOR FUNCTIONS OF A HIGHWAY DEPARTMENT: DESIGN, CONSTRUCTION, MAINTENANCE AND OPERATION. IT IS FELT THAT PAVEMENT CONDITIONS SHOULD BE MEASURED AS OBJECTIVELY AS POSSIBLE IN QUANTITATIVE TERMS DIVORCED FROM THE PERSONAL EQUATION INVOLVED IN SUBJECTIVE RATINGS. ROUGHNESS MEASUREMENTS, MECHANICALLY RECORDED AND EXPRESSED IN TERMS OF A NUMERICAL INDEX, MEET THIS REQUIREMENT. THE AUTHOR FEELS THAT PAVEMENT CONDITION SURVEYS FALLS SHORT OF THEIR FULL POTENTIAL IF THEY STOP AT MEASURING PRESENT SERVICEABILITY AND DO NOT PROVIDE AN ANSWER TO THE QUESTION OF HOW OR WHY A GIVEN PAVEMENT HAS REACHED A SPECIFIC SERVICEABILITY LEVEL. MR CAREY DISCUSSES THE AASHO ROAD TEST SERVICEABILITY CONCEPT. NO ONE HAS MADE ANY CLAIM FOR THE PRESENT SERVICEABILITY INDEX AS A DEVICE BY WHICH ONE CAN PREDICT FUTURE PERFORMANCE. THE NEED WAS EXPRESSED FOR CONDITION SURVEYS TO PREDICT FUTURE MAINTENANCE REQUIREMENTS. MR. LUNDSTROM STATES THAT PAVEMENT CONDITION DATA MAY BE USED IN THE IMPROVEMENT OF PAVEMENT SPECIFICATIONS AND IN ASSISTING THE CONTRACTOR IN AN UNDERSTANDING OF THE QUALITY OF WORK REQUIRED. SUCH AN APPLICATION OF THE DATA IS BEING DEVELOPED IN CONNECTION WITH THE CONSTRUCTION OF A NEW TEST TRACT AT THE GENERAL MOTORS PROVING GROUND, MILFORD, MICHIGAN. MR SEBASTYAN DESCRIBES THE CANADIAN DEPARTMENT OF TRANSPORT'S PAVEMENT CONDITION EVALUATION SURVEY. THIS EVALUATION PROGRAM CONSISTS OF APPRAISAL OF THE FOLLOWING FACTORS: (1) STRENGTH OF THE PAVEMENT STRUCTURE, (2) ENVIRONMENTAL CONDITIONS OF THE PAVEMENT STRUCTURE, AND (3) EXISTING PAVEMENT CONDITION.
- Digital Copy:
-
Supplemental Notes:
- No 40, pp 41-51, 5 FIG
-
Authors:
- Housel, W S
- Carey, W N
- Lundstrom, L C
- Sebastyan, G Y
- Publication Date: 1963
Media Info
-
Serial:
- Highway Research Record
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Airport runways; Condition surveys; Construction management; Evaluation; Highway maintenance; Highway planning; Measurement; Pavement layers; Pavement performance; Pavements; Roughness; Test tracks
- Non-Preferred Terms: Serviceability
- Uncontrolled Terms: Pavement structure; Serviceability Index
- Old TRIS Terms: Construction control
- Subject Areas: Construction; Design; Highways; Pavements;
Filing Info
- Accession Number: 00207124
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 3 1970 12:00AM