FIELD STUDIES OF CONCRETE MIXES CONTAINING REGULAR AND AIR- ENTRAINING CEMENT ON PROJECT SN-FA-29/7/

THIS INVESTIGATION WAS PERFORMED TO DEVELOP INFORMATION TO REDUCE OR PREVENT THE PROGRESSIVE SURFACE DETERIORATION OF CONCRETE PAVEMENTS IN NEBRASKA. THE CONCRETES USED CONTAINED TWO BRANDS OF TYPE I AND TYPE IA CEMENT, AN AIR-ENTRAINING ADMIXTURE AND TWO COMBINATIONS OF COARSE AND FINE AGGREGATES . THE AGGREGATES WERE COMPOSED OF 75 PERCENT SAND-GRAVEL AND 25 PERCENT COARSE AGGREGATE, A LIMESTONE OR A SANDSTONE. SINCE THIS TEST ROAT WAS BUILT IN 1944 AND 1945, THE USE OF AIR-ENTRAINMENT WAS A NEW CONCEPT IN CONCRETE CONSTRUCTION. TESTS WERE PERFORMED TO EVALUATE THE PROPERTIES OF THE PLASTIC CONCRETE AND THE STRENGTH OF THE HARDENED CONCRETE. CONDITION SURVEY WAS MADE OF THE FINISHED PAVEMENT PERIODICALLY. THE CONCLUSIONS REACHED WERE AS FOLLOWS' DEFINITE CONCLUSIONS WERE UNWARRANTED BECAUSE OF INSUFFICIENT TEST ON ALL VARIABLES. THE LIMESTONE WAS OF POOR QUALITY AND VARIED IN DURABILITY. THE SANDSTONE APPEARS TO BE MORE DURABLE THAN THE LIMESTONE USED BUT LESS DURABLE THAN LIMESTONE FOUND IN EAST CENTRAL NEBRASKA. THE AIR-ENTRAINMENT WAS BENEFICIAL IN REDUCING MIXING WATER. THE AIR-ENTRAINED CONCRETE APPEARED TO BE MORE DURABLE IN FREEZING AND THAWING. /BPR/

  • Supplemental Notes:
    • No63-8c-1, NO. SN-FA-29/7/
  • Corporate Authors:

    Nebraska Department of Roads

    1500 Highway 2, P.O. Box 94759
    Lincoln, NE  United States  68509
  • Publication Date: 1965-11

Subject/Index Terms

Filing Info

  • Accession Number: 00211983
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Feb 1 1994 12:00AM