Construction of Concrete Structures on the Moon

月球上混凝土结构的施工

• 批准号: 10044110
• 负责人: SAEKI Noboru
• 金额: $ 1.79万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10044110/
• 关键词: Anorthite; Basalt; Calcium oxide; Lunar Cement; DM; SI Method; 月コンクリート; 低重力; レゴリス; キャストバサルト; CaO; 高真空

This study discusses potential utilization of Lunar materials for future cement production on the Moon. In general, lunar materials have a low calcium oxide concentration and may be unsuitable for cement formation. Nonetheless, lunar anorthite rocks (17%CaO) and lunar basalt(12% CaO) have been successfully used in formulating a cementitious material. Hokkaido anorthite consists of 16% of calcium oxide and is considered a candidate material for the proposed lunar cement production study. An electric furnace capable of generating heat up to 1600℃ was used to conduct several bench burns using Hokkaido anorthite as simulant. The sintering temperature and duration were 145O℃ and one hour, respectively. Two types of lunar cements with finess ranging from 2670 to 5000 Blaine wvere made. The conventional wet mix procedure and the Dry-Mix/Steam Injection (DM/SI) method developed by T. D. Lin were applied to make a series of 4cm mortar cubes for compression tests. The wet-mix cubes developed 2.9N/mmィイD12ィエD1 after 7 days of curing in a moist room while the DM/SI cubes developed 21.9N/mmィイD12ィエD1 after 24hours of steaming at 170℃. Scanning Electronic Microscopic analysis and X-Ray diffraction analysis were performed to determine the morphology and chemical compositions of the obtained hydrates.

这项研究探讨了月球材料在未来月球水泥生产中的潜在利用。一般来说，月球材料的氧化钙浓度较低，可能不适合形成水泥。尽管如此，月球钙长岩(17%CaO)和月球玄武岩(12%CaO)已成功地用于配制胶凝材料。北海道斜长岩含有16%的氧化钙，被认为是拟议的月球水泥生产研究的候选材料。以北海道斜长岩为模拟材料，在一台发热量高达1600℃的电炉上进行了多次台烧试验。烧结温度为145℃，保温时间为1小时。制作了两种细度从2670到5000的月球水泥。采用传统的湿拌工艺和林天德等人发展的干混/蒸汽注射(DM/SI)方法，制备了一系列4 cm砂浆立方体进行抗压试验。湿混块在潮湿的室内烘烤7天后形成2.9N/mmィイD12ィエd1，而DM/SI块在170ィイ下蒸24小时后形成21.9N/mmィエd12℃d1。用扫描电子显微镜和X射线衍射仪对所得水合物的形貌和化学组成进行了分析。

项目成果

堀口 敬: "月面におけるセメントとコンクリートの製造に関する研究" 第15回宇宙利用シンポジウム. 69-72 (1998)

Takashi Horiguchi：“月球表面水泥和混凝土生产的研究”第15届空间利用研讨会69-72（1998）。

堀口敬: "月面におけるセメントとコンクリートの製造に関する研究"Space Utilization Research. 15. 69-72 (1999)

Takashi Horiguchi：“月球表面水泥和混凝土生产的研究”空间利用研究。15. 69-72 (1999)。

T.Horiguchi: "Behaviour of Simulated Lunar Cement Mortar in Vacuum Environment"Proceedings of the 6th International Conference on Space '98. 571-576 (1998)

T.Horiguchi：“真空环境中模拟月球水泥砂浆的行为”98 年第六届国际空间会议论文集。

T. Horiguchi: "Cement and Concrete Production on the Moon"Space Utilization Research. 15. 69-72 (1999)

T. Horiguchi：“月球上的水泥和混凝土生产”空间利用研究。

T.Horiguchi: "Production and Hardened Properties of Lunar Simulant Concrete"The Proceedings of 1st Joint Symposium between Korea and Japan. 49-56 (1998)

T.Horiguchi：“月球模拟混凝土的生产和硬化性能”第一届韩日联合研讨会论文集。