STRENGTH AND DENSITY OF LABORATORY-PREPARED RCC SPECIMENS: EFFECT OF COMPACTION PROCEDURE

Appropriate compaction is essential in producing roller-compacted concrete (RCC). An experimental program was conducted to study the effect of compaction on the strength and density of RCC specimens. Compaction was achieved by tamping the sample with a hammer similar to that of the American Society for Testing and Materials D 1557. The main variables were the magnitude of compaction energy, number of layers per mold, and cement content. The compaction energy ranged from 300 kN-m/cu m to 2,700 kN-m/cu m. The test results revealed that the decrease of the unit weight by 7.7% decreased the compressive and splitting tensile strengths by 73% and 71%, respectively. Increasing the cement content compensated for the reduction in compaction energy. The average degree of compaction of the cores taken from the field RCC test slabs was 99% of the unit weight of field samples prepared with a 2,700 kN-m/cu m compaction energy.

  • Availability:
  • Supplemental Notes:
    • Financial support for this research was provided under Research Grant No. AR-14-20 by the King Abdulaziz City for Science and Technology.
  • Corporate Authors:

    American Society for Testing and Materials (ASTM)

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Shihata, S A
  • Publication Date: 2000-6

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00794128
  • Record Type: Publication
  • Contract Numbers: AR-14-20, MSS-9114313
  • Files: TRIS
  • Created Date: Jun 28 2000 12:00AM