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With the rapid development of science and technology,civil engineering in the cryogenic environment has become popular.Studies suggest that Pykrete(a mixture made of approximately 14wt%of sawdust and 86wt%of water)is stronger after cryogenic treatment.We make Super Pykrete from newspapers and gels(CMC-gelatin copolymer)within the optimum ratio ranges.It has several desirable properties including high strength,low weight,and short curing time.Results indicate that Super Pykrete can potentially be a material for civil engineering in the cryogenic environment and meet the sustainable requirements.