摘要
本文利用扫描电镜观察了在具有不同矿物组成的系统中生成的钙矾石的形成与膨胀机理。发现能够产生膨胀的钙矾石是由局部化学反应所生成；它们在未水化的铝酸盐矿物表面原地结晶，呈放射状生长。通过溶解，沉淀生成的钙矾石不能凝结，没有膨胀性。
The formation and expansion mechanism of ettringite formed in the systems of different mineral composi-tions has been investigated with SEM. It is shown that expansible ettringite forms in the topochemical reaction,and crystallizes in-situ on the surface of unhydrated aluminate minerals and orients radially. Ettringite formed inthe process of resolution and then precepitation cannot set and harden,and has resultedly no expansibility.
出处
《电子显微学报》
CAS
CSCD
1994年第4期297-300,共4页
Journal of Chinese Electron Microscopy Society
