00206969

Component

http://onlinepubs.trb.org...rbbulletin/116/116-002.pdf

THIS PROJECT WAS BUILT IN THE SUMMER AND FALL OF 1952 IN AN ATTEMPT TO DETERMINE THE PERFORMANCE OF VARIOUS THICKNESSES OF SUBBASE ON A MAIN TRUCK ROUTE. THE PROJECT IS FOUR MILES LONG, OF 9-IN. UNIFORM THICKNESS, AND IS 24 FT. WIDE. IT IS DIVIDED INTO FOUR SECTIONS, TWO WITH CONTRACTION JOINTS ON 100-FT. CENTERS AND TWO WITH CONTRACTION JOINTS ON 20-FT. CENTERS. THE FOUR SECTIONS ARE DIVIDED INTO SUBSECTIONS USING THE FOLLOWING TYPES OF SUBBASE: (1) CONTROL WITH NO SUBBASE, SUBGRADE IS A KNOWN PUMPING SOIL, (2) OPEN-TEXTURED GRANULAR SUBBASE MATERIAL, 3, 5, AND 8 INCHES THICK, (3) DENSE-GRADED GRANULAR SUBBASE MATERIAL, 3, 5, AND 8 INCHES THICK, (4) CEMENT-MODIFIED SOIL 6 INCHES THICK, WITH CEMENT CONTENTS OF 5, 7, 9, AND 11 PERCENT, AND (5) SOIL-CEMENT MIXTURE 3 AND 5 INCHES THICK. EIGHTEEN 24- HR. TRAFFIC COUNTS MADE SINCE THE PROJECT WAS CONSTRUCTED SHOW THAT THE TEST LANES CARRY APPROXIMATELY 1,844 COMBINATION TRUCKS IN 24 HOURS. MANY OF THESE HAVE AXLE LOADS EXCEEDING 18,000 LB. /AUTHOR/

No 116, pp 57-71, 3 FIG, 18 TAB, 3 REF, 1 APP 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.

01410517

16p

1956

Highway Research Board Bulletin

Digital/other

Contraction joints; Dense graded aggregates; Experimental roads; Granular materials; Open graded aggregates; Pavement performance; Research; Soil cement; Spacing; Subbase (Pavements); Subbase materials; Thickness; Traffic counting

Subbase

Highways; Pavements; Research

TRIS, TRB

Dec 9 1994 12:00AM

• REPORT ON PAVEMENT RESEARCH PROJECT IN INDIANA