The Development of Micro-Concrete for Scale Model Testing of Buried Structures.

Abstract

This report describes the development of microconcrete and miniaturized reinforcement for modelling 1/60th and 1/90th scale reinforced concrete buried structures. The microconcrete uses gypsum cement, sand aggregate and water in a ratio of 1:0.8:0.25 by weight. Curing is halted by sealing the microconcrete after 48 hours exposure to air at ambient temperatures. The resulting mix has the following properties: f'sub c = 4085 psi, f' sub t = 327 psi, gamma = 130 pcf yd, E sub c = 3.3x1000000 psi. Miniaturized reinforcement was developed using 28, 24, and 22-gage wire passed through a deforming machine to provide knurls on the wire. Pretensioning the wire was necessary to remove kinks and coils. Failure load predictions of miniature reinforced beams agreed well with observed results. Keywords: blast loading. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1986
Accession Number
ADA167284

Entities

People

  • Charles H. Cunningham
  • F. C. Townsend
  • F. E. Fagundo

Organizations

  • University of Florida

Tags

DTIC Thesaurus Topics

  • Air Force
  • Civil Engineering
  • Compressive Strength
  • Elastic Properties
  • Materials Laboratories
  • Materials Testing
  • Modulus Of Elasticity
  • Particle Size
  • Plastic Explosives
  • Standards
  • Stress Strain Relations
  • Structural Loads
  • Tensile Strength
  • Tensile Testing
  • Test Methods
  • United States
  • Yield Strength

Readers

  • Explosive Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Pavement Materials Engineering.