00215302

Component

https://onlinepubs.trb.or...bproceedings/11/11-012.pdf

UNDER CERTAIN CONDITIONS CEMENT RECEIVED ON THE WORK RETAINS CONSIDERABLE AMOUNTS OF THE HEAT GENERATED DURING MANUFACTURE. OCCASIONAL TEMPERATURES AS HIGH AS 150 TO 200 F HAVE BEEN NOTED. THE PURPOSE IS TO ASCERTAIN WHAT EFFECT THIS HEAT HAS UPON THE SETTING TIME OF THE CEMENT AND THE WORKABILITY OF THE CONCRETE IN HIGHWAY WORK. THE REPORT INCLUDES THE COMPARATIVE SETTING TIME OF AT LEAST FOUR DIFFERENT CEMENTS AT TEMPERATURES OF 70, 100, 150, AND 200 F, MIXED WITH WATER AT 70, 100, AND 150 F. THE SET IS RECORDED AT TWENTY-FIVE MINUTES, FORTY-FIVE MINUTES, AND AT TEN MINUTE INTERVALS, THEREAFTER, UNTIL INITIAL SET IS ATTAINED. IN ORDER TO SIMULATE SEVERE FIELD CONDITIONS THE SPECIMENS WERE STORED IN AIR AT 100 F, WITH CONTROLLED HUMIDITY OF FORM FROM FORTY-FIVE TO FIFTY PERCENT. TESTS OF THE WORKABILITY OF CONCRETE MADE WITH CEMENT AND WATER AT THE SAME TEMPERATURES AS IN THE SETTING TESTS ARE ALSO REPORTED. /AUTHOR/

Vol 11, Pt 1, PP 218-227, 9 FIG; part of Report of Committee on Materials and Construction. 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

PAUL, I

1932

Highway Research Board Proceedings

Digital/other

Cement; Concrete curing; Humidity; Temperature; Water; Workability

Construction; Geotechnology; Highways; Materials

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
• SOME PRINCIPLES OF SOIL SURVEYING AND SOIL MAPPING FOR ROAD PURPOSES
• TAXATION AND EXPENDITURES IN THE STATE OF WISCONSIN
• THE AIR RESISTANCE OF MOTOR VEHICLES
• THE ECONOMICS OF LOW COST BRIDGES
• 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