Title:
Effect of Moisture oin Thermal Conductivity of Limerock Concrete
Author(s):
Mack Tyner
Publication:
Journal Proceedings
Volume:
43
Issue:
9
Appears on pages(s):
9-18
Keywords:
none
DOI:
10.14359/8742
Date:
9/1/1946
Abstract:
The coefficient of thermal conductivity k of lime- rock concrete is a function of temperature,’ composi- tion and density of moisture content. No attempt has been made to measure the effect of temperature on k. Holding the temperature reasonably constant the effect of composition on k has been measured for two Ilmerock concrete mixes ( I :5 and I :7 by volume). The I :5 mix has a k that larger than the k for the I :7 mix. is IO percent With the temperature and composition held con- stant, the effect of moisture on k for the I.5 and I :7 mixes has been measured. The moisture content has a profound effect on k, e.g., increases of moisture from 0 to 5 percent increases the k of I :5 mix by 23 percent and from 0 to IO percent increases the k by 46 percent. Concretes should be kept dry if their maximum heat insulation effect is desired.