结构特征对白云质灰岩ADR膨胀的影响  

Effects of texture on alkali-dolomite reaction of the dolomitic limestones

作　　者：周艮梅 邓敏 黄蓓[1] 陈碧 李伟 茆忠阳 ZHOU Genmei;DENG Min;HUANG Bei;CHEN Bi;LI Wei;MAO Zhongyang(The Synergetic Innovation Center for Advanced Materials,Nanjing 210009,China;State Key Laboratory of Materials-OrientedChemical Engineering,College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China)

机构地区：[1]江苏先进生物与化学制造协同创新中心,江苏南京210009 [2]南京工业大学材料科学与工程学院材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2018年第5期60-66,78,共8页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省普通高校研究生科研创新计划项目(KYLX15_0781)

摘　　要：运用激光共聚焦显微镜(LSCM)和扫描电子显微镜(SEM)等测试手段对中国山东省潍坊市虎头山的白云质灰岩HTS-3、HTS-5、HTS-8、HTS-10、HTS-12和HTS-13的岩石结构特征进行分析,并采用混凝土微柱法(RILEM AAR-5)和碱-碳酸盐反应快速鉴定法(NRAA 02)对岩石的碱-碳酸盐反应活性进行检测。结果表明:泥晶白云质灰岩中,伊利石含量、白云石含量和白云石-基质间的间隙是影响碱白云石反应(ADR)膨胀的重要因素,伊利石的含量越高,越有利碱迁移至白云石表面发生碱白云石反应;白云石含量越高,碱白云石反应位置增多;白云石-基质间的间隙越小,碱白云石反应生成产物越受限,结果均使得ADR膨胀增大。Laser scanning confocal microscope （LSCM） and scanning electron microscope （SEM） were used to analyse the textures of the dolomitic limestones HTS-3,HTS-5,HTS-8,HTS-10,HTS-12 and HTS-13,which were derived from Hutou mountain at Weifang of Shandong Province in China.The alkali-carbonate reaction of the dolomitic limestones was tested according to concrete microbar method （RILEM AAR-5） and rapid identification of alkali carbonate reaction（NRAA 02）.Results showed that the contents of illite and dolomite and gap between dolomite and matrix were the key factors which determined the alkali-dolomite reactivity （ADR） of the dolomitic micrite.The higher the contents of illite or dolomite,the higher were the alkali-dolomite reactivities.Smaller gaps between dolomite and matrix might cause larger alkali-dolomite reactivities.

关 键 词：白云质灰岩 岩石结构 碱-碳酸盐反应 碱白云石反应 

分 类 号：TU521.2[建筑科学—建筑技术科学]