矿渣对铝酸盐水泥石性能影响的研究  

Influence Study on the Performance of Aluminate Cement with Slag

作　　者：李早元[1] 伍鹏[1] 程小伟[1] 王岩[1] 郭小阳[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《硅酸盐通报》2014年第12期3338-3342,共5页Bulletin of the Chinese Ceramic Society

基　　金：四川省应用基础研究项目(2013JY0097)

摘　　要：铝酸盐水泥在混凝土工程中具备良好的耐高温性能,但因其在低温下具有温度敏感性,限制了其在固井工程中的应用。实验以铝酸盐水泥为主材进行矿物熟料优选复配,运用矿渣对铝酸盐水泥进行改良,并采用XRD、SEM和热分析等试验手段对作用机理进行分析。试验结果表明:矿渣可有效地改善铝酸盐水泥强度发展存在温度敏感区间的缺点,且能提高水泥石高温后的抗压强度以及长期耐温性能。低温下生成的水化钙铝黄长石(C2ASH8)可有效提高铝酸盐水泥石的强度发展,高温生成的C3AS2H2和C3ASH4结晶度高,Al O(OH)填充在晶体的空隙当中,使得水泥水化产物结构紧密,水泥石力学性能长期稳定、耐温性能良好。Aluminate cement has good high temperature resistant performance in concrete engineering,but it has temperature sensitivity at low temperatures,which limits its application in cementing engineering.Laboratory experiments were conducted clinker compound mainly with aluminate cement,using slag to make it better and the mechanism of the slag to improve aluminate cement was analyzed by means of XRD,SEM and TG-DTA. The experimental results show that： slag can develop compressive strength of aluminate cement which has the weaknesses of temperature sensitivity,and it can also improve the high temperature resistance of it. The formation of C2ASH8 at low temperatures help with the development of cement strength,and the formation of C3AS2H2 and C3ASH4at high temperatures have high crystallinity with Al O（ OH） filling in the gaps of crystal,thus cement hydration products＇ structure is tight,cement stone can keep good mechanical properties and maintain stability at high temperature.

关 键 词：稠油热采井 铝酸盐水泥 矿渣 耐高温性能 

分 类 号：TE256[石油与天然气工程—油气井工程]