Document Archives

The Structural Properties of Some Lightweight Aggregate Concretes

• ID:

  346

• ESCSI:

  4000.006

• Author:

  Green, William C. and D. Watstein

• Publication Name:

  Nat. Bureau of Standards Report 1166

• Type of Publication:

  Book

• Publisher:

  U.S. Dept of Commerce, Nat. Bureau of Standards

• Dated:

  1951

• Issue/Volume:

  Oct 1,

• Other ID:

• Page(s):

  1-15 + tables

• Reference List:

  Y

• Abstract:

  The tests presented in this report were made to determine the structural properties of lightweight aggregate concretes having compressive strengths of about 5000,1000 and 2000 psi. The aggregates used in this study were expanded shale (Haydite), expanded slag (Waylite) and pumice.The properties of lightweight concretes investigated were the compressive strength in flexure, bond strength, resistance to diagonal tension, thermal conductivity and drying shrinkage. The cylinder compressive strength and modulus of elasticity were also determined.
  The bond strength was determined by means of pull-out specimens; the ratio of bond strength to cylinder compressive strength ranged from 0.12 to 0.34. The compressive strength of the concrete in flexure computed for the test beams was 30 to 65 percent greater than the corresponding compressive strength of 6- by 12-in. cylinders. In the shear tests of beams, the computed shear strength of the concrete varied from 8 to 18 percent of the corresponding cylinder compressive strength.
  The results obtained in the measurement of thermal conductivity and drying shrinkage were in good agreement with previous work on similar concretes.