WATER VAPOR TRANSMISSION OF CONCRETE AND OF AGGREGATES

Abstract

An investigation was made of the effects of water-cement ratio, type of reinforcing steel, aggregate size, relative humidity, concrete slice position, and two admixtures, sodium chloride and oleic acid, on the water vapor transmission of concrete. A collateral investigation was made of the water vapor transmission of aggregates, and a study was made of the growth of sodium chloride whisker crystals on concrete. Water vapor transmission rates were found to decrease with an in crease in strength of concrete (decreased water cement ratio), an increase in aggregate size, and the presence of sodium chloride. Rates appeared to decrease with an increase in relative humidity, but the data were inconclusive. The rates were found to be independent of the type of rein forcing steel and the absence or presence of oleic acid. The water vapor transmission rates of aggregates were found to be lower than the water vapor transmission rates of concrete, but were of the same order of magnitude.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1963
Accession Number
AD0412407

Entities

People

  • G. W. Kurtz
  • R. L. Henry

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Analysis Of Variance
  • Body Weight
  • Civil Engineering
  • Construction
  • Crystal Growth
  • Crystals
  • Data Analysis
  • Engineering
  • Equations
  • Experimental Design
  • Information Science
  • Materials
  • Minerals
  • Petrology
  • Statistical Analysis
  • Tectosilicates
  • Tensile Strength

Fields of Study

  • Engineering

Readers

  • Analytical Chemistry
  • Mathematics or Statistics
  • Pavement Materials Engineering.