CEMENT-TREATED SUBBASES FOR CONCRETE PAVEMENTS

THE CONTRIBUTION OF CEMENT-TREATED SUBBASES TO THE LOAD- CARRYING CAPACITY OF CONCRETE PAVEMENTS WAS INVESTIGATED IN TERMS OF DEFLECTION, STRAIN, AND PRESSURE RESPONSE. CONCRETE SLABS, 3, 5, AND 7 IN. THICK, WERE CAST ON 3, 6, AND 9-IN. CEMENT-TREATED SUBBASES /CTS/. INTERLAYER TREATMENT WAS SAND-CEMENT GROUT, SS-1 BITUMINOUS EMULSION, OR 4-MIL POLYETHYLENE. SLAB RESPONSES WERE COMPARED WITH THEORETICAL BEHAVIOR OF CONCRETE SLABS ON CLAY SUBGRADES. IT WAS FOUND THAT 2 1/2 IN. OF CTS WAS GENERALLY AS EFFECTIVE IN RESISTING DEFLECTION AS 1 IN. OF CONCRETE. AT EDGES WHERE THE SUBBASE WAS EXTENDED 1 FT BEYOND THE CONCRETE SLAB, 2 IN. OF CTS RESISTED EDGE LOADS AS EFFECTIVELY AS 1 IN. OF CONCRETE. CEMENT-TREATED SUBBASES ALSO IMPROVED LOAD TRANSFER ACROSS JOINTS. FATIGUE STUDIES INDICATED EXCELLENT ENDURANCE FOR ALL PAVEMENTS TESTED. ALTHOUGH PAVEMENTS WERE SUBJECTED TO OVERLOADS AT EDGES, NO EDGE FAILURES WERE PRODUCED. AT CORNERS, EXCESSIVE LOADS WERE REQUIRED TO CAUSE 1/8-IN. FAULTS IN TWO PAVEMENTS. OTHERS HAD EITHER UNFAULTED CRACKS OR NO CRACKS AFTER OVER ONE MILLION REPETITIONS. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1967/189/189-002.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Rigid Pavement Design and presented at the 46th Annual Meeting. 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.
• Authors:
  • Childs, L D
• Publication Date: 1967

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 19-43
• Monograph Title: Design,Performance and Surface Properties of Pavement
• Serial:
  • Highway Research Record
  • Issue Number: 189
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Accelerated tests; Base course (Pavements); Bearing capacity; Bearing tests; Cement treated soils; Deflection; Durability; Fatigue tests; Improvements; Load transfer; Oversize loads; Pavements; Repeated loads; Slabs; Subbase (Pavements)
• Uncontrolled Terms: Cement treated bases; Edges; Overloads; Subbase
• Old TRIS Terms: Bearing capacities; Resistance
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00205458
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 26 1994 12:00AM