00368275

Component

http://onlinepubs.trb.org...s/trr/1982/853/853-004.pdf

https://scholar.google.co...olch&publication_year=1982

Previous research has developed a relation between the pore structure of a coarse aggregate and the freeze-thaw durability, measured in the laboratory, of concrete made with that aggregate. This has permitted the calculation of an expected durability factor from a knowledge of an aggregate's median pore diameter and total pore volume. This work has been extended to a consideration of in-service pavements, some of which showed D-cracking distress and some of which appeared to be durable. Forty-seven pavement sections were cored, and coarse-aggregate samples were removed and separated lithologically. Their pore-size distributions were determined by mercury intrusion. Criteria involving the expected durability factor and relative amounts of good and bad aggregate fractions in the pavement were correlated with the extent of observed D-cracking. These correlations were distinctly superior to absorption measurements in identifying bad aggregates. It is suggested that the established criteria might be used to predict the performance to be expected from aggregate sources and might be a valuable acceptance standard. (Author)

This paper appeared in Transportation Research Record No. 853, Concrete Analysis and Deterioration.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.

01411656

p. 17-20

1982

Transportation Research Record

61st Annual Meeting of the Transportation Research Board

0309033578

Figures (1) ; References (2)

Coarse aggregates; Correlation analysis; D cracking; Pavement cracking; Pore size distribution; Pore space

Data and Information Technology; Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces

TRIS, TRB

Dec 30 1982 12:00AM

• ACCURACY OF THE CHACE AIR INDICATOR (ABRIDGMENT)
• CONCRETE EVALUATION BY RADAR THEORETICAL ANALYSIS
• D-CRACKING: PAVEMENT DESIGN AND CONSTRUCTION VARIABLES
• DURABILITY OF CONCRETE AND THE IOWA PORE INDEX TEST
• EFFECTS OF CONCRETE DETERIORATION ON BRIDGE RESPONSE
• EFFORTS TO ELIMINATE D-CRACKING IN ILLINOIS
• OHIO AGGREGATE AND CONCRETE TESTING TO DETERMINE D-CRACKING SUSCEPTIBILITY
• RADAR AS APPLIED TO EVALUATION OF BRIDGE DECKS
• RECYCLING PORTLAND CEMENT CONCRETE PAVEMENT