LIGHTWEIGHT CONCRETE USING POLYMER-FILLED AGGREGATE FOR OCEAN APPLICATIONS - AN EXPLORATORY INVESTIGATION

A lightweight concrete specially suited for deep ocean applications was tested for its strength properties and compared to similar regular lightweight concrete. The new concrete used lightweight aggregate particles (expanded shale) which were filled with a polymeric material. The polymer-filled aggregate (PFA) was conventionally mixed with portland cement and water to make the lightweight concrete. Four concrete mixes were tested. In general, the PFA concrete, compared to regular lightweight concrete, has an equal unit weight in a seawater saturated condition and exhibited increases in compressive strength of 26%, split tensile strength of 4%, elastic moduli of 4% and an equal Poisson's ratio. The strongest mix for PFA concrete had a compressive strength of 6,580 psi, compared to 5,200 psi for regular lightweight concrete, at an age of 28 days under continuous fog curing. Both mixes have a weight savings of 40%, compared to that of normal weight concrete in a submerged, saturated condition. A discussion of cost is presented and shows that the in-place structural cost of PFA concrete would be about 30% greater than normal concrete. (Author)

• Corporate Authors:

  Naval Construction Battalion Center

  Civil Engineering Laboratory, Point Mugu
  Port Hueneme, CA  United States  93043
• Authors:
  • Haynes, H H
  • Eckroth, W V
• Publication Date: 1979-12

Media Info

• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Cement; Compressive strength; Concrete; Concrete tests; Lightweight materials; Materials; Military organizations; Oceans; Performance; Polymers; Seawater; Specific gravity; Strength of materials; Weight
• Uncontrolled Terms: Compressive properties; Military applications
• Old TRIS Terms: Deep oceans; Materials performance; Strength analysis; Weight reduction
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00318243
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CEL-TN-1565
• Files: TRIS
• Created Date: Sep 16 2002 12:00AM