Accession Number:

ADA028067

Title:

Coefficient of Linear Expansion of Massive Concrete at a Negative Temperature (Koeffitsient Lineinogo Rasshireniia Massivnogo Betona pri Otritsatel'noi Temperature),

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

Report Date:

1976-07-01

Pagination or Media Count:

21.0

Abstract:

The article presents the results of full-scale extensometric measurements of free thermal deformations of concrete in 41 sections of the Bratsk hydroelectric station dam at a negative temperature. It is shown that the coefficient of linear expansion of frozen concrete is 1.6 times greater, on the average, than at a positive temperature, and that there is a relationship between these coefficients and the strength of the concrete. Melting of the concrete is accompanied by the appearance of residual deformation of elongation. Tests specially conducted on samples 10x10x40 cm in size of different composition of the concrete yielded similar results. Data are provided on the effect of a change in the value of the coefficient of linear expansion of the frozen concrete on opening on construction joints and cracks as well as the stress state of the concrete. Author

Subject Categories:

  • Ceramics, Refractories and Glass
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE