Accession Number:

ADA070864

Title:

Long-Term, Deep-Ocean Test Concrete Spherical Stuctures - Results Ater 6 Years.

Descriptive Note:

Final rept. Jul 71-Mar 78,

Corporate Author:

CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CA

Personal Author(s):

Report Date:

1979-01-01

Pagination or Media Count:

53.0

Abstract:

In 1971, a long-term, deep-ocean test was started on eighteen concrete spheres, 66 inches 1, 676 mm in outside diameter by 4,12 inches 105 mm in wall thickness. The spheres were placed in the ocean at depths from 1,840 to 5,075 feet 560 to 1,547 m. Over a 6.4-year period, yearly inspections of the spheres by submersibles have provided data on time-depedent failure and permeability. After 5.3 years, three of the spheres were retrieved from the ocean for laboratory testing. Data on concrete compressive strength gain, short-term implosion strength of the three retrieved spheres, and permeability and durability of the concrete were obtained. This report summarizes the findings from the laboratory and ocean tests. Author

Subject Categories:

  • Ceramics, Refractories and Glass
  • Construction Equipment, Materials and Supplies
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE