00205815

Component

https://onlinepubs.trb.or...hrbproceedings/8/8-016.pdf

THE SPACING OF CONTRACTION CRACKS (IF NO JOINTS ARE USED) DEPENDS PRIMARILY UPON THE TENSILE STRENGTH OF THE CONCRETE AND THE COEFFICIENT OF FRICTION BETWEEN THE SLAB AND SUBGRADE. IN DESIGNING JOINT SPACING TO ELIMINATE CRACKS, THESE FACTORS MUST BE EVALUATED ACCORDING TO THE PREVAILING TEMPERATURE CONDITINS AND PROBABLE SMOOTHNESS OF SUBGRADE. A MINIMUM SPACING OF CONTRACTION JOINTS TO PREVENT CRACKS FORMING DURING THE FIRST 24 HOURS AFTER PLACING ON AN AVERAGE SUBGRADE IS SHOWN THEORETICALLY TO BE ABOUT 37.5 FEET. THE AFFECTS OF LONGITUDINAL STEEL AND SUBGRADE SETTLEMENT ON JOINT SPACING AND THE THEORY FOR THICKNESS OF EXPANSION JOINTS ARE ALSO DISCUSSED.

Vol 8, pp 162-170, 4 FIG, TAB. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01490390

1929

Highway Research Board Proceedings

Digital/other

Coefficient of friction; Concrete; Concrete pavements; Contraction joints; Cracking; Expansion joints; Longitudinal reinforcement; Pavement design; Pavements; Settlement (Structures); Slabs; Smoothness; Spacing; Subgrade (Pavements); Temperature; Tensile strength; Thickness

Concrete cracking; Pavement thickness

Highways; Pavements

TRIS, TRB

Jul 18 1971 12:00AM

• AIR RESISTANCE OF AUTOMOBILES
• APPLICATION OF PRESENT KNOWLEDGE IN THE CONSTRUCTION AND MAINTENANCE OF BITUMINOUS MACADAM AND BITUMINOUS CONCRETE
• CONCRETE PAVEMENT MAINTENANCE
• DESIGN OF THE CROSS-SECTION
• DISTRIBUTION OF WHEEL LOADS THROUGH VARIOUS RUBBER TIRES
• FINANCING A STATE ROAD SYSTEM WITH BONDS
• FURTHER STUDY OF FILL SETTLEMENT IN PEAT MARSHES
• MAINTENANCE COSTS AS AFFECTED BY TYPE OF PAVEMENT AND AMOUNT OF TRAFFIC
• MARYLAND AERIAL SURVEY OF HIGHWAY TRAFFIC BETWEEN BALTIMORE AND WASHINGTON
• METHODS FOR CONSTRUCTING SMOOTH RIDING BITUMINOUS SURFACES
• REPORT OF COMMITTEE ON ECONOMIC THEORY OF HIGHWAY IMPROVEMENT
• REPORT OF COMMITTEE ON HIGHWAY FINANCE
• REPORT OF COMMITTEE ON HIGHWAY TRAFFIC ANALYSIS
• REPORT OF COMMITTEE ON MAINTENANCE
• REPORT ON GUARD FENCE RESEARCH
• RESEARCH
• RESEARCH ON MIXING OF CONCRETE IN BATCH MIXERS
• SPACING OF DOWELS
• STEEL REINFORCEMENT IN CONCRETE PAVEMENTS
• THE BITUMINOUS SURFACE TREATMENT OF ROADS AND PAVEMENTS
• THE CONTROL OF CRACKING IN RIGID PAVEMENTS
• THE NORTH CAROLINA TIRE TESTER
• THE PAY-AS-YOU-GO PLAN OF HIGHWAY FINANCING
• THE PERSONAL FACTOR IN HIGHWAY ACCIDENTS
• TRAFFIC SURVEYS, AND THEIR BEARING ON THE FINANCING OF ROAD BUILDING PROGRAMS
• USE OF EXCESS FINE AGGREGATE IN CONCRETE PAVEMENTS
• WHEEL LOAD AND IMPACT IN PAVEMENT DESIGN