A Cementitious Material Which Forms a Densified, Strong, Protective Surface by Interaction of Chemicals with Atmospheric Gases, Such as CO2

9807210DryAn SGER奖将支持一项可行性研究，通过水泥中的水合二氧化钙与周围二氧化碳的碳化反应，在水泥表面产生致密、坚固和坚硬的表土层。氢氧化钙硅酸钙是由硅酸锂和氢氧化钙的初始反应得到的，也会产生氢氧化锂，预计氢氧化锂会减少有害的碱-硅反应。机械，微观结构和反应速率性能将被确定为许多组合物，以优化表面性能的强度和不透水性

9807210DryAn SGER award will support a study of the feasibility of generating dense, strong and hard surface layers on cement surfaces from carbonation reactions of calcium-silica hydrate in the cement with ambient carbon dioxide. The calcium-silicate hydroxide is to be obtained from an initial reation of lithium silicate with calcium hydroxide, producing also lithium hydroxide which is expected to minimize the detrimental alkali-silica reaction. Mechanical, microstructural and reaction rate properties will be determined for a number of compositions in order to optimize the surface properties for strength and impermeability to water.***