How To Overcome Sample Disturbance? Essay

608 words - 3 pages

It is a well known fact that concrete is considered as the globally accepted construction material on earth. On the other hand, concrete in space was still mysterious when the researchers wrote this paper. However, some prior research indicated that there is possibility of lunar soil could be utilized as a construction material in space. A team of Master Builders, Inc. and Students for the Exploration and Development of Space (SEDS), a student group at the University of Alabama in Huntsville instigated such unique, ongoing, fundamental research program for concrete in space, particularly in moon. The researchers mainly focused research on hydration mechanism of Portland cement in microgravity and search out some potential improvement on earth concrete.
As mentioned in the paper, the research program was divided in to four major phases commenced from preliminary feasibility study of experiment to concluding testing and evaluation of intended material properties. In this study, finding prospective microgravity environment with enough time for experiment (basically for concrete mixing and curing) and flexible hardware interface for specialized experimental devices were the foremost challenges for the successful research. The author’s state that they explored four earth based microgravity environment from the different sources, NASA Space Shuttle was the most convenient one because it could provide sufficient time of microgravity environment for experiment and, fortunately, there was an additional NASA’s GAS (Gas Away Special) experimental program for the purpose of supporting use of space for all the researchers. After all, the researchers set the experimental program entitled as Conic (Concrete Curing and Mixing in Microgravity).
For such experiment, design of fully automated concrete mixing chamber in microgravity environment was the challenging task for the researchers although it is somewhat simple effort on earth. Reviewing the preceding research...

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