Channel: Subgrade Engineering http://zgglxb.chd.edu.cn EN-US http://zgglxb.chd.edu.cn/EN/current.shtml http://zgglxb.chd.edu.cn 5 2S and C₃S in SSS powder are quickly hydrated to provide Ca²⁺ and OH^-, and under the excitation of desulfurized gypsum, the active silicon oxide and active aluminum oxide in CFB ash react with the Ca²⁺ in SSS powder (pozzolanic effect) to generate hydrated C—S—H gel and AFt, filling pores, making the structure more compact, and improving its mechanical properties. These results can help to develop green and low-cost grouting materials for the treatment of the goaf under highway subgrades and provide a new approach for the recycling of industrial solid wastes such as CFB ash.]]>