The effect of activator concentration on reaction degree and structure formation of alkali-activated ground granulated blast furnace slag
The effect of activator concentration on reaction degree and structure formation of alkali-activated ground granulated blast furnace slag
复制标题
DOI：
10.1007/s10853-006-0755-7
复制
发表时间：
2006-09
影响因子：
4.5
通讯作者：
H. Hilbig;A. Buchwald
中科院分区：
文献类型：
--
作者：
H. Hilbig;A. Buchwald
2006在CSH相[8]的硅酸盐链中合并的铝酸盐四面体，以及镁或铝酸钙水合物[2]的六个配位铝。图3为原料的27Al核磁共振波谱以及碱活化材料的波谱。根据四、五、六配位铝的不同环境，渣的光谱显示出几个宽而强的重叠峰。碱活化渣样品由未反应的渣组成，由四面体铝的不对称形状表示，它与CSH相内的四面体铝峰重叠（约70 ppm）。另外，反应产物与六配位铝形成在约10 ppm的尖峰。从x射线衍射的结果来看，这个信号可以归因于水滑石相。未反应渣的六配位铝（图5中的问号）和水滑石信号的叠加阻止了该相的量化。儿童和青少年卫生与发育司
Accepted: 3 August 2006/Published online: 19 September 2006© Springer Science+ Business Media, LLC 2006 aluminate tetrahedra incorporated in the silicate chains of the CSH phases [8] as well as six coordinated aluminium from magnesium or calcium aluminate hydrate phases [2]. Fig. 3 shows the 27Al NMR spectrum of the raw material as well as the spectra of the alkali-activated materials. The spectrum of the slag shows several broad strongly overlapping peaks according to varying environments of four, five and six coordinated aluminium. The alkali-activated slag samples consist of unreacted slag indicated by the asymmetric shape of the tetrahedral aluminium that overlaps the peak of tetrahedral aluminium inside the CSH phases (around 70 ppm). Additionally reaction product with six coordinated aluminium is formed indicated by the sharp peaks at about 10 ppm. In view of the results of X-ray diffraction investigations [5] this signal can be attributed to the hydrotalcite phase. The superposition of the signals of the six coordinated aluminium of the unreacted slag (question mark in Fig. 5) and the hydrotalcite prevent quantification of this phase. CAH