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Title : 大连理工大学（土木水力学院） 建筑材料研究所 所长 大连理工大学建筑能源技术研究中心 主任 辽宁省复合材料学会常务副理事长兼秘书长 政协辽宁省委员会委员 “建筑技术与应用”“混凝土”和“国外连建材科技“等杂志编委
Title of Paper:A New Technique to Manufacture Desalinated Sea Sand Concrete and Its Properties
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Date of Publication:2011-06-18
Included Journals:EI、CPCI-S、Scopus
Volume:250-253
Issue:1-4
Page Number:283-+
Key Words:Electrodialysis; Desalination; Sea sand sluicing; Alkaline potential water; Desalinated sea sand concrete
Abstract:For the purpose of enhancing concrete performance and conserving freshwater, we proposed a new technique of making desalinated sea sand concrete. Salinity qualified desalinated sea water with alkaline potential is obtained through a set of self-made dual membrane electrodialyzers and membrane electrolyzers. Sea sand is sluiced by the obtained desalinated sea water before it is made into concrete. The desalinating device is portable and easy operating, and outputs qualified sea water to the requirements of desalinating sea sand. The method of sluicing sea sand is proved to be practical and effective. It is found that, comparing to standard concrete, concrete made of desalinated sea sand and alkaline potential water has better mechanics performance and better protection for steel bars. Both desalinated sea water and sea sand contain a certain amount of OFF ions, which helps reducing the ratio of Cl-/OH- in concrete and thus inhibit the Cl- ions from rotting or carbonating concrete; concrete durability is therefore enhanced.
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