硼钡复掺对C_3S形成机制及影响研究

Effect and Mechanism of B,Ba Doping on Formation of C_3S

针对防辐射水泥钡水泥、硼水泥防辐射效果单一化、胶凝性不高的缺点,本文拟从复掺和组分优化设计上入手,将具有防γ、X射线效应Ba元素及防中子射线效应B元素以掺杂的形式固溶至C3S相中,通过f-CaO测定及XRD、SEM测试,研究BaO、B2O3对C3S形成机制的影响。结果表明:掺量较小时,掺BaO或B2O3对C2S有明显的稳定作用,均不利于C3S的形成;掺量较大时,B2O3的助熔作用一定程度上促进C3S形成,BaO的矿化作用不利于C3S形成。采用复掺方法时,较小比例B2O3的促熔作用结合BaO的矿化作用,对C3S形成的阻碍作用影响不大。

A defect for simplification of radiation effects and low gelling that radiation manifested,such as barium cement and boron cemen,this article is designed to be mix and optimized from component.Ba which can anti-α,β,and γ,X-ray effects and B which can anti the neutron effect,were doped with a solid solution way into C3S phase,then measured by f-CaO and XRD,SEM testing,to research effect of BaO or B2O3 on the formation mechanism of C3S.The results showed that： when the dosage is smaller,samples doped by BaO and B2O3 can stable the exist of C2S significantly,which both are not conducive to the formation of C3S;when the dosage is larger,the fluxing action of B2O3 promote the formation of C3S,but doped by BaO,which is not conducive to the formation of C3S because its mineralization.when mixed by a smaller proportion of B2O3,the mineralization of BaO and pro-melt role of combination B2O3,which impediment is controllable.