集料与矿渣硅酸盐水泥石界面区的若干研究  

STUDIES ON THE INTERFACIAL ZONE BETWEEN AGGREGATE AND PASTE OF PORTLAND BLASTFURNACE SLAG CEMENT

作　　者：余其俊[1] 胡明德 王旭 钱进夫[1] 

机构地区：[1]武汉工业大学材料工程系

出　　处：《上海建材学院学报》1993年第4期295-302,共8页

摘　　要：利用 XRD 层析法和 SEM 法探讨了集料与矿渣硅酸盐水泥石界面区的组成、结构和 CH 晶体取向指数等。研究发现,界面区水化产物主要是 C—S—H凝胶、CH 晶体、AF(?)等,同时还存在有孔隙和未水化的熟料矿物等;与硅酸盐水泥相比,矿渣硅酸盐水泥与集料形成的界面区中 C—S—H凝胶较多、CH 晶体较少而且其取向指数 I_(CH)较低、取向存在范围也较窄;该水泥中掺入质量比为5.0%的硅灰后,界面区中 CH 晶体取向作用接近消失;90d 后425~#矿渣硅酸盐水泥石与集料的粘结强度接近于525~#硅酸盐水泥石与集料的粘结强度。The composition and structure of the interracial zone between aggregate(white marble,limestone,granite)and paste of Portland blastfurnace slag cement as well as the orientation coefficient of portlandite(I_(CH))were preliminarily studied by XRD,SEM.The results reveal that the main components of the zone are C-S-H gel,portlandite,AFt, pores and cracks as well as unhydrated Portland clinker particles.Portlandite exists in orientating forms.More C-S-H gel,less and smaller portlandite and lower I_(CH) can be found in the zone between aggregate and paste of Portland blastfurnace slag cement by comparison with those in the paste of Portland cement.The range of the zone is also nar- rower than that of Portland cement paste.When 5.0% silica fume is added to the cement the orientation of portlandite is eliminated.The interracial bond strength between aggre- gate and the paste of 425~# Portland blastfurnace slag cement is approximately equal to that between aggregate and the paste of 525~# Portland cement.

关 键 词：集料 矿渣 硅酸盐水泥石 界面区 

分 类 号：TU528.041[建筑科学—建筑技术科学]