00232870

Component

https://onlinepubs.trb.or...hrbproceedings/6/6-015.pdf

POROUS SUBBASE TESTS SHOW 1.29 FEET OF CRACK FOR EACH LINEAL FOOT OF CONCRETE ROAD ON THE NATURAL SOIL AND FROM 0.45 TO 0.47 FOOT ON VARIOUS POROUS SUBBASES AFTER TWO YEARS OF SERVICE. SURVEYS OF THE CRACKING CONDITION LEAD TO THE FOLLOWING CONCLUSIONS: (1) THE CEMENT-CLAY ADMIXTURE APPEARED DURING CONSTRUCTION, AND SHOWS IN RESULTS SINCE TO BE LITTLE IF ANY DIFFERENT THAN THE NATURAL SOIL BASE, (2) THE POROUS BASES SHOW MUCH LESS CRACKING THAN DO THE NATURAL SOIL AND ADMIXTURE OF CEMENT AND SOIL BASES, (3) THE INCREASE IN CRACKS DURING THE SECOND YEAR SHOW SIMILARLY FAVORABLE RESULTS FOR THE POROUS BASES, AND (4) IT IS UNSAFE TO DRAW CONCLUSIONS UPON THE SUFFICIENCY OF TWO, FOUR, OR SIX INCH POROUS BASES TO SAVE THE ROAD MAINTENANCE AND EQUIVALENT OF THEIR ORIGINAL COST.

Vol 6, pp 170-175, 5 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.

01488025

1927

Highway Research Board Proceedings

Digital/other

Admixtures; Cement; Clay; Cracking; Subbase (Pavements); Testing

Subbase

Geotechnology; Highways

TRIS, TRB

Jun 11 1971 12:00AM

• A COMPARISON OF ROAD CONDITIONS WITH ATTERBERG'S LIMITS AND THE OTHER STANDARD SOIL TESTS
• A STUDY OF THE MOISTURE CONTENT OF OHIO SOILS
• ADDRESS ON THE HIGHWAY AND THE LABORATORY
• ANALYSIS OF STRESSES IN CONCRETE PAVEMENTS DUE TO VARIATIONS OF TEMPERATURE
• BITUMINOUS MATERIALS FOR SURFACE TREATMENT
• BRIEF REVIEW OF ALKALI ACTION ON PORTLAND CEMENT CONCRETE
• COLLECTION AND DISPOSITION OF MOTOR VEHICLE REVENUES
• CONCRETE AND CONCRETE AGGREGATES
• DISCUSSION OF PAPER ON THE METHODS AND POSSIBILITIES OF ROAD-SOIL INVESTIGATIONS
• DISCUSSION OF PROGRESS REPORT ON CULVERT INVESTIGATION
• DISCUSSION OF PROGRESS REPORT ON LOWCOST IMPROVED ROADS INVESTIGATION
• DISCUSSION OF REPORT OF COMMITTEE ON CHARACTER AND USE OF ROAD MATERIALS. I. CONCRETE MATERIALS
• DISCUSSION OF REPORT OF COMMITTEE ON CHARACTER AND USE OF ROAD MATERIALS. II. BITUMINOUS MATERIALS
• DISCUSSION OF REPORT OF COMMITTEE ON ECONOMIC THEORY OF HIGHWAY IMPROVEMENT
• DISCUSSION OF REPORT OF COMMITTEE ON HIGHWAY FINANCE
• DISCUSSION OF REPORT OF COMMITTEE ON HIGHWAY TRAFFIC ANALYSIS
• DISCUSSION OF REPORT OF COMMITTEE ON MAINTENANCE
• DISCUSSION OF REPORT OF COMMITTEE ON STRUCTURAL DESIGN OF ROADS
• EXTRACT FROM REPORT ON VIRGINIA FEDERAL AID PROJECT 371-C
• FIELD CONTROL OF CONCRETE MAKING-A STUDY OF LATE PRACTICE
• FILL SETTLEMENT IN PEAT MARSHES
• IMPACT FORCES EXERTED BY THE MOTOR TRUCK ON THE HIGHWAY
• INVESTIGATIONS OF AIR RESISTANCE ON AUTOMOBILES
• INVESTIGATIONS OF ASPHALTIC PAVING MIXTURES RELATIVE TO DEFORMATION OF SURFACES UNDER TRAFFIC
• PAPER ON THE METHODS AND POSSIBILITIES OF ROAD-SOIL INVEST- IGATIONS
• PAVEMENT DISPLACEMENT DUE TO WATER AND FROST
• PROGRESS REPORT ON A FIELD EXPERIMENT ON INTRODUCTION OF PLANES OF WEAKNESS IN CONCRETE SLABS
• PROGRESS REPORT ON CULVERT INVESTIGATION
• PROGRESS REPORT ON LOW-COST IMPROVED ROADS INVESTIGATION
• PROGRESS REPORT ON THE EXPERIMENTAL CURING SLABS AT ARLINGTON, VIRGINIA
• PROGRESS REPORT ON TIRE WEAR INVESTIGATION
• REPORT OF COMMITTEE ON HIGHWAY TRAFFIC ANALYSIS
• REPORT OF COMMITTEE ON MAINTENANCE. I. MAINTENANCE OF CONCRETE PAVEMENTS
• REPORT OF COMMITTEE ON MAINTENANCE. II-SNOW REMOVAL AND SNOW REMOVAL EQUIPMENT
• REPORT OF COMMITTEE ON MAINTENANCE. III-COVERING FOR POORLY CONSTRUCTED AND DISINTEGRATING CONCRETE ROADS
• REPORT OF COMMITTEE ON MAINTENANCE. IV-ANNUAL REDUCTION THICKNESS OF GRAVEL ROADS UNDER DIFFERENT TRAFFIC AND EFFECT OF DUST PALLIATIVES
• REPORT OF COMMITTEE ON MAINTENANCE: V. MAINTENANCE COSTS AS AFFECTED BY THE TYPE OF PAVEMENT AND AMOUNT OF TRAFFIC
• REPORT OF DIRECTOR
• REPORT ON FORMATION OF SPECIAL COMMITTEE ON CAUSES AND PREVENTION OF HIGHWAY ACCIDENTS
• SOME PRINCIPLES INVOLVED IN BITUMINOUS MACADAM CONSTRUCTION
• SUBGRADE MATERIALS AND TESTS
• SUBGRADE STUDIES OF THE U.S. BUREAU OF PUBLIC ROADS
• THE NORTH CAROLINA ROAD TEST TRUCK
• THE SLAKING TEST
• THINNER PAVING BRICK
• TIRE WEAR INVESTIGATION