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Heat and moisture flow in concrete as a function of temperatureDue to temperature, reactors in operation cause heat and moisture flows in the thick walled prestressed pressure vessels. These flows were studied in three beams of concrete made with crushed limestone aggregate, and in three beams made of crushed gravel/sand aggregate. The flow phenomena were related to the structural development of the concrete by determining the amount of non-evaporatable water, the total porosity, and the pore size distribution. Local temperature and moisture conditions also influenced the technical properties. Compressive strength, changes in length due to shrinkage and contraction, thermal expansion, and thermal conductivity were determined.
Document ID
19790003981
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Hundt, J.
(NASA Headquarters Washington, DC United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1978
Subject Category
Composite Materials
Report/Patent Number
REPT-256
NASA-TM-75286
Report Number: REPT-256
Report Number: NASA-TM-75286
Accession Number
79N12152
Funding Number(s)
CONTRACT_GRANT: NASW-3199
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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