00202855

Component

https://onlinepubs.trb.or...bproceedings/11/11-011.pdf

KNOWLEDGE OF SOIL CONDITIONS, REQUIRED FOR THE EFFICIENT DESIGN OF ROADS, NECESSITATES THE MAKING OF SOIL SURVEYS. EXISTING SOIL MAPS AND PROFILES WHICH ARE DESIGNED FOR AGRICULTURAL USE ARE NOT SUFFICIENT FOR THE ROAD ENGINEER. IT IS RECOMMENDED THAT IN ADDITION TO THE SOIL GROUPING DEFINED BY THE BUREAU OF PUBLIC ROADS THE SOILS BE FURTHER CHARACTERIZED WITH RESPECT TO PERMEABILITY AND STABILILITY. A METHOD FOR DETERMINING THE MOISTURE EQUIVALENT OF THE SOIL BY CENTRIFUGING AND A NEW TEST FOR SHEARING RESISTANCE ARE SUGGESTED. THE SHEARING RESISTANCE IS MEASURED BY PULLING OUT A RIGID STAKE THAT HAS BEEN DRIVEN INTO THE SOIL FOR TWELVE INCHES, BY MEANS OF A WIRE CONNECTED TO THE AXLE OF AN AUTOMOBILE THROUGH A DYNOMOMETER. UNDER GENERAL CONSIDERATIONS REFERRING TO SOIL MAPPING AND THE PREPARATION OF SOIL PROFILES, SUBGRADE PROBLEMS ARE DISCUSSED IN CONSIDERABLE DETAIL. DISCUSSIONS ON THE MOISTURE EQUIVALENT AND SHEARING RESISTANCE OF SOILS AND METHODS OF DETERMINING THESE CHARACTERISTICS ARE PROPOSED. SOME GENERAL PRINCIPLES AS TO THE IMPROVEMENTS ARE ADVANCED. /AUTHOR/

Vol 11, Pt 1, PP 199-217, 13 FIG, 1 TAB, 13 REF. 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.

01490418

1932

Highway Research Board Proceedings

Digital/other

Earth roads; Geological surveying; Moisture content; Permeability; Shear strength; Soil groups; Soil mapping; Soil profiles; Soil stabilization; Soils; Subgrade (Pavements)

Design; Geotechnology; Highways

TRIS, TRB

Jun 1 1971 12:00AM

• A NEW THEORY OF FROST HEAVING
• DISCUSSION ON FROST HEAVING
• DISCUSSION ON LOW COST BRIDGES
• ECONOMICS OF LOW COST BRIDGES
• ECONOMICS OF LOW COST HIGHWAY BRIDGES
• ECONOMICS OF LOW COST HIGHWAY BRIDGES
• FACTORS AFFECTING VOLUME CHANGES IN CONCRETE AND THEIR SIGNIFICANCE IN DESIGN
• FIELD EXPERIMENTS IN SUBGRADE DRAINAGE AND TREATMENT
• FIELD METHODS FOR MEASURING TIRE WEAR
• Fillers and Bedding Courses for Brick Pavements
• FUNCTIONS OF STEEL REINFORCEMENT IN CONCRETE PAVEMENTS AND PAVEMENT BASES
• LOAD LIMITATIONS ON HIGHWAYS
• LOW COST STEEL HIGHWAY-BRIDGES
• REPORT ON CULVERT INVESTIGATION
• REPORT ON STATE CONTROL OF TRAFFIC
• REPORT ON TRAFFIC LAW OBSERVANCE AND ENFORCEMENT METHODS
• REPORT ON VEHICLE AND HIGHWAY MECHANICS AS RELATED TO TRAFFIC
• RESISTANCE OF CONCRETE TO FROST ACTION AS AFFECTED BY THE WATER-CEMENT RATIO
• TAXATION AND EXPENDITURES IN THE STATE OF WISCONSIN
• THE AIR RESISTANCE OF MOTOR VEHICLES
• THE ECONOMICS OF LOW COST BRIDGES
• THE EFFECT OF HOT CEMENT ON TIME OF SET AND WORKABILITY OF CONCRETE
• THE EFFECTIVENESS OF CALCIUM CHLORIDE AS A DUST PALLIATIVE AND ITS VALUE TO GENERAL ROAD MAINTENANCE
• THE SIGNIFICANCE OF SODIUM SULFATE AND FREEZING AND THAWING TESTS OF MINERAL AGGREGATES
• TRAFFIC CAPACITY
• TREATMENT OF ICY PAVEMENTS
• USE OF CONCRETE AS AN ECONOMIC HIGHWAY BRIDGE MATERIAL
• VOLUME CHANGES IN CONCRETE SLABS IN THE FIELD