NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Lunar cementWith the exception of water, the major oxide constituents of terrestrial cements are present at all nine lunar sites from which samples have been returned. However, with the exception of relatively rare cristobalite, the lunar oxides are not present as individual phases but are combined in silicates and in mixed oxides. Lime (CaO) is most abundant on the Moon in the plagioclase (CaAl2Si2O8) of highland anorthosites. It may be possible to enrich the lime content of anorthite to levels like those of Portland cement by pyrolyzing it with lunar-derived phosphate. The phosphate consumed in such a reaction can be regenerated by reacting the phosphorus product with lunar augite pyroxenes at elevated temperatures. Other possible sources of lunar phosphate and other oxides are discussed.
Document ID
19930007708
Document Type
Other
Authors
Agosto, William N.
(Lunar Industries, Inc. Houston, TX, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: NASA. Johnson Space Center, Space Resources. Volume 3: Materials
Subject Category
Lunar And Planetary Exploration
Accession Number
93N16897
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available