00739772

Component

https://doi.org/10.3141/1568-05

http://scholar.google.com...ough&publication_year=1997

The effect of coarse aggregate on pavement performance has been attributed to the volume of aggregate used in pavement construction. The different patterns of crack development for limestone (LS) and siliceous river gravel (SRG) are a typical example of aggregate-induced variable performance in continuously reinforced concrete pavement (CRCP). An attempt was made to find a reasonable solution for pavements with SRG. As a way to solve the performance problem observed from the SRG pavement, a blended aggregates mixture was suggested. Laboratory and field tests were performed to check the feasibility of their application in pavements. From the laboratory test, a 50:50 blending ratio was suggested after considering the effect on tensile strength and thermal coefficient of expansion. Field test sections were also constructed to verify previous performance observations for the two aggregates and to provide performance data for new variables such as blended aggregates and special curing methods. Unexpectedly, the blended mixture did not improve the performance of SRG pavement; rather it experienced worse cracking than SRG alone. A controlled experiment with additional field test sections is needed to verify or disprove this finding. The only definitive finding was that selection of aggregate in the concrete pavement is a vital consideration for the design of the pavement. The CRCP8 analytical program reasonably predicted crack spacing for both SRG and LS pavements, predicting mean crack spacing of 0.99 m (3.25 ft) for SRG and 1.98 m (6.41 ft) for the limestone. These values are somewhat below the actual spacing observed at 100 days. Data collected after the first winter period will be required to calibrate the program.

This paper appears in Transportation Research Record No. 1568, Pavement Rehabilitation and Design.

English

p. 35-43

1997

Transportation Research Record

0309059747

Figures (12) ; References (8) ; Tables (1)

Blending; Coarse aggregates; Computer programs; Continuously reinforced concrete pavements; Cracking; Field tests; Forecasting; Gravelly soils; Laboratory tests; Limestone aggregates; Pavement cracking; Pavement performance; Rivers; Silica stone; Spacing; Test sections

Crack spacing; Siliceous river gravel

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Aug 25 1997 12:00AM

• COMPATIBLE APPROACH TO CONCRETE STRENGTH CHARACTERIZATION IN THE DESIGN AND CONSTRUCTION OF CONCRETE PAVEMENTS
• DETECTING STRIPPING IN ASPHALT CONCRETE LAYERS USING GROUND PENETRATING RADAR
• DEVELOPMENT OF A ROLLER-COMPACTED CONCRETE PAVEMENT CRACK AND JOINT SPACING MODEL
• EFFECT OF NONLINEAR TEMPERATURE GRADIENT ON CURLING STRESS IN CONCRETE PAVEMENTS
• ELASTIC PAVEMENT ANALYSIS USING INFINITE ELEMENTS
• FINITE-ELEMENT ANALYSIS OF PORTLAND CEMENT CONCRETE PAVEMENTS WITH CRACKS
• FLEXIBLE PAVEMENT OVERLAYS: THE STATE EXPERIENCE
• FRACTURE MECHANICS IN PAVEMENT ENGINEERING: THE SPECIMEN-SIZE EFFECT
• IMPLEMENTATION FEASIBILITY OF ASPHALT CONCRETE-OVERLAID PORTLAND CEMENT CONCRETE PAVEMENT REHABILITATION GUIDELINES
• IMPROVED METHODOLOGY FOR DEVELOPING A LONG-RANGE PAVEMENT REHABILITATION PROGRAM
• IN SITU EVALUATION OF FATIGUE DAMAGE GROWTH AND HEALING OF ASPHALT CONCRETE PAVEMENTS USING STRESS WAVE METHOD
• INNOVATIVE APPROACH TO FATIGUE CRACK PROPAGATION IN CONCRETE PAVEMENTS
• LABORATORY AND FIELD MOISTURE CONDITIONS FOR FLEXIBLE PAVEMENT
• MODIFIED PORTLAND CEMENT ASSOCIATION STRESS ANALYSIS AND THICKNESS DESIGN PROCEDURES
• NEURAL NETWORK ALGORITHMS FOR THE CORRECTION OF CONCRETE SLAB STRESSES FROM LINEAR ELASTIC LAYERED PROGRAMS
• PERFORMANCE OF A REHABILITATED D-CRACKED JOINTED PLAIN CONCRETE AIRFIELD PAVEMENT
• RELIABILITY DESIGN OF FLEXIBLE AIRFIELD PAVEMENTS: ELASTIC LAYERED METHOD
• SIMPLIFIED PROCEDURE FOR PREDICTION OF ASPHALT PAVEMENT SUBSURFACE TEMPERATURES BASED ON HEAT TRANSFER THEORIES
• STRUCTURAL EVALUATION AND ANALYSIS OF INSTRUMENTED IN-SERVICE CONCRETE PAVEMENTS SUBJECTED TO HEAVY DYNAMIC LOADS
• TECHNIQUES FOR SELECTING PAVEMENT REHABILITATION STRATEGIES: PENNSYLVANIA CASE STUDIES