【摘要】 用DTA,XRD,SEM,MIP方法研究了铁对硫铝酸钡钙矿物的水化产物的影响.结果表明,加铁后水泥的主要水化产物为BaSO4,含铁C3AH6,CAH10,C2AH8,铁胶和铝胶.C2.75B1.25A2.75Fe0.25-S试样水化时,少量的Fe3+可阻止介稳态的CAH10和C2AH8的转换;C2.75B1.25A2Fe-S试样水化时,大量的Fe3+可促进介稳态的CAH10和C2AH8转变为C3AH6,导致水泥后期强度下降.更多还原

【Abstract】 By experiment methods of DTA,XRD,SEM and MIP,the influence of the ferrite on the hydration products of barium-bearing calcium sulfo-aluminate was studied.The results show that the main hydration products are BaSO₄,Fe-bearing C₃AH₆,CAH₁₀ or C₂AH₈,Fe（OH）₃ gel and（Ca（OH）₂） gel.When C_2.75B_1.25A_2.75Fe_0.25 hydrates,transition of the unstable Fe-bearing CAH₁₀ and Fe-bearing C₂AH₈ are held back by a little Fe³⁺ ions,but the transition are promoted by a great lot Fe³⁺ ions and leads to the reduction of late strength.更多还原