A STUDY OF MAP CRACKING IN SAND-GRAVEL PAVEMENTS

THE APPEARANCE OF CRACKS, INDICATIVE OF DISINTEGRATION IN SAND-GRAVEL AGGREGATE CONCRETE PAVEMENTS AFTER FOUR YEARS SERVICE, PROMPTED THIS INVESTIGATION. SAND-GRAVEL IS THE LOCAL NAME OF A SILICEOUS MATERIAL FOUND PRINCIPALLY IN THE VALLEYS OF THE KAW, ARKANSAS AND PLATTE RIVERS. APPROXIMATELY 90 PERCENT PASSES THE NO. 4 SIEVE AND THE MAXIMUM SIZE IS ONE INCH OR LESS. THE BRAND OF CEMENT AND METHOD OF CURING AND SUBGRADE CONDITIONS WERE ELIMINATED AS POSSIBLE SOURCES OF THE DIFFICULTY. SPECIMENS OF CONCRETE WERE SUBJECTED TO FREEZING AND THAWING, AND WETTING AND DRYING TESTS IN CONNECTION WITH MEASUREMENTS OF STRENGTH AND VOLUME CHANGES IN AN ATTEMPT TO PRODUCE SIMILAR DISINTEGRATION IN THE LABORATORY. THE SPECIMENS DID NOT SHOW SIGNS OF DISINTEGRATION UNDER FREEZING AND THAWING BUT THE CHARACTERISTIC MAP CRACKING DEVELOPED IN THE WETTING AND DRYING TESTS. SIMILAR TESTS ON CONVENTIONAL MIXTURES OF FINE AND COARSE AGGREGATE DID NOT PRODUCE DISINTEGRATION OR MAP CRACKING. /AUTHOR/

  • Supplemental Notes:
    • Vol 18, Pt 1, PP 227-237, 9 FIG, 11 TAB
  • Authors:
    • Gibson, W E
  • Publication Date: 1939

Media Info

  • Monograph Title: Proceedings of the Eighteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. November 28-December 2, 1938. Part I
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207179
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 1 1971 12:00AM