本文研究了硅酸锂溶胶及微量纳米SiO2粒子的掺杂对混凝土后期水化的影响.采用SEM、XRD、TG、BJH孔径分析等检测手段,证明复合硅酸锂溶胶可促使混凝土表层进一步水化,形成更多结构紧密质均的胶状C-S-H凝胶,从而有效填充混凝土内部的疏松孔洞.掺杂纳米SiO2粒子的硅酸锂溶胶对混凝土后期水化作用更明显,使C-S-H凝胶层间孔增加一倍多,有效地减少了毛细孔数量.
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