摘要
研究了不同温度下水泥熟料矿物氟铝酸钙 11Ca O· 7Al2 O3· Ca F2 的水化及其水化动力学过程。研究表明 ,11Ca O· 7Al2 O3· Ca F2 的水化产物及其水化程度随水化温度范围的不同而变化。当水化温度低于 30℃时 ,水化温度提高 ,11Ca O· 7Al2 O3· Ca F2 的早期水化程度显著提高 ;30℃以后水化温度的影响不大。在 15～ 6 0℃范围内 ,11Ca O·7Al2 O3· Ca F2 的水化反应在进行 0 .5 h后便进入受扩散控制阶段 ,其水化程度 α与水化时间 t的关系符合 Kondo R等提出的水化动力学方程 :[1- (1-α) 1 /3]N=K t。此外 ,制备了可用于对铝酸盐水泥水化产物进行 QXDA分析时作标准物质的纯 C2 AH8和 C3AH6 。
The hydration and hydration kinetics of 11CaO·7Al 2O 3·CaF 2,a mineral present in fluorite containing cement clinker,at different temperatures were studied. The results show that: (1)the hydration products and the hydration degree of 11CaO·7Al 2O 3·CaF 2 are varied with hydration temperature;(2)as hydration temperature rises,the initial hydration of 11CaO·7Al 2O 3·CaF 2 is accelerated evidently at temperature below 30 ℃,and a little at temperature above 30 ℃;and(3)in the investigated temperature range(15～60 ℃),the hydration degree of 11CaO·7Al 2O 3·CaF 2 ( α )is related to hydration time( t ) in the form of [1-(1- α ) 1/3 ] N = Kt as suggested by Kondo R et al, and after hydrated for half an hour its hydration enters the diffusion controlled process. In addition,pure C 2AH 8 and C 3AH 6 which can be used as standard materials in QXDA of aluminate cement hydrates were prepared in this study.
出处
《武汉理工大学学报》
CAS
CSCD
2002年第8期23-27,共5页
Journal of Wuhan University of Technology
