高速机械粉磨对油基钻屑灰渣活性的影响  

Effect of high-speed mechanical grinding on activity of oil-based drilling cuttings ash

作　　者：张显河 文华[1] 郑召 包志涛 余伟豪 雷旭 范伟 ZHANG Xianhe;WEN Hua;ZHENG Zhao;BAO Zhitao;YU Weihao;LEI Xu;FAN Wei(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《混凝土与水泥制品》2024年第2期88-92,共5页China Concrete and Cement Products

基　　金：国家科技重大专项课题项目(2016ZX05040006-001-011);国家自然科学基金项目(51108393)。

摘　　要：对油基钻屑灰渣进行了高速机械粉磨处理,研究了粉磨时间(0~7 min)对灰渣粒径分布和比表面积的影响,分析了掺灰渣胶砂试件的力学性能,并进行了XRD、SEM、FTIR微观分析。结果表明:与未粉磨处理的灰渣相比,粉磨3 min灰渣的粒径分布范围缩小至1.220~40.100μm,D50降低了60.9%,比表面积增大了27.6%;与其他粉磨时间的灰渣相比,用粉磨3 min的灰渣等质量取代30%水泥所制备的胶砂试件的28 d抗压强度最高,28 d抗折强度也较高;适宜的粉磨时间能够促进灰渣中的活性Si O2、Al2O3等与水泥水化产物Ca(OH)2发生二次水化反应,生成C-S-H凝胶和AFt,提高胶砂结构的密实度。High-speed mechanical grinding treatment was carried out on oil-based drilling cuttings ash,and the effect of grinding time(0~7 min)on the particle size distribution and specific surface area of the oil-based drilling cuttings ash was studied.The mechanical properties of the mortar specimens mixed with oil-based drilling cuttings ash were analyzed,and XRD,SEM and FTIR microscopic analysis were conducted.The results show that compared with the oil-based drilling cuttings ash without grinding treatment,the particle size distribution range of the oil-based drilling cuttings ash after grinding for 3 min is reduced to 1.220~40.100μm,the D50 is decreased by 60.9%,and the specific surface area is increased by 27.6%.Compared with the oil-based drilling cuttings ash from other grinding times,the 28 d compressive strength of the mortar specimens prepared by replacing 30%cement with oil-based drilling cuttings ash from grinding for 3 min is the highest,and the 28 d flexural strength is high.The appropriate grinding time can promote the secondary hydration reaction between the active SiO2,Al2O3,etc.in the oil-based drilling cuttings ash and the cement hydration product Ca(OH)2 to generate C-S-H gel and AFt,thus improving the structural compactness of the mortar.

关 键 词：高速机械粉磨 油基钻屑灰渣 活性激发 胶砂 性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]