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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Stresses in Concrete Panels Exposed to the Sun on the Moon
Author(s): T. D. Lin, G. Ahmed, G. Hill, S. Robinson, T. Lin, C. Lindbergh, and J. O'Gallagher
Publication: Special Publication
Appears on pages(s): 141-154
Keywords: computer programs; concrete panels; heat transfer; lunar bases; precast concrete; prestressed concrete; sun; thermal stresses; Structural Research
Abstract:The recently established Lunar/Mars Program Office at Johnson Space Center is studying options that include construction of lunar outposts in the early twenty-first century, and subsequent structures for industrial operations. Major industrialization on the moon cannot occur without access to lunar resources. Construction of such structures as large pressurized habitats, launching facilities, lunar surface transportation systems, and liquefied oxygen storage tanks requires enormous volumes of materials. Experiments sponsored by the National Aeoronautics and Space Administration (NASA) and carried out at construction technology laboratories show the following: cements can be made from lunar anorthite and basalt; concrete made with lunar soils as aggregate has strength exceeding 10,000 psi; and a dry mixture of cement and aggregate wetted by injected steam will simplify concreting procedures and minimize needs for water and heavy equipment. In addition, a preliminary analysis of a prestressed precast concrete structure measuring 120 ft in diameter and 72 ft high shows that a properly designed concrete structure can confine atmospheric internal pressure. This project further investigates the effect of lunar temperature extremes on the behavior of precast concrete panels during the construction period. The major work involves calculations of heat flow in concrete panels exposed to the sun on the lunar surface and thermal stresses in the panels caused by the transient heat flow. Computer programs were written for the computations and results are presented.
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