骨料-砂浆交界面劈裂损伤声发射特性试验研究  

Experimental Study on Acoustic Emission Characteristics of Split Failure Processes for Aggregate-Mortar Interface

作　　者：王岩[1] 赵海涛[1] 姚金鑫[1] 陈育志[2] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]金陵科技学院建筑工程学院,江苏南京211169

出　　处：《建筑材料学报》2014年第2期212-215,共4页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51009058);中国博士后科学基金面上资助项目(2011M501160);中国水利水电科学研究院开放研究基金资助项目(IWHRKF201014)

摘　　要：为了研究骨料-砂浆交界面损伤破坏过程的损伤特征进而分析其损伤机理,采用全数字化声发射采集系统监测了其整个劈裂损伤破坏过程.在对所伴生的声发射信号进行全面系统分析的基础上,从声发射累积特性、声发射单参数时程变化规律、声发射组合参数变化规律等方面对交界面损伤过程的典型声发射特性进行了研究,这对识别混凝土损伤演化规律和损伤的物理机理都具有重要参考价值.In order to observe the feature of split failure process of aggregate-mortar interface with a view to analyze and understand its damage mechanism, the whole split damage processes of interface specimens for granite-mortar were monitored by full-digital acoustic emission（AE） acquisition system. On the basis of the statistics analysis of AE signals associated with interface damage processes comprehensively, typical AE characteristics were summed up from the aspects of accumulation characteristics of AE signals, time history scatter plots of single AE parameter; and distribution analysis of combined AE parameters. The research results may be recommended for further recognition of physical mechanism of concrete damage processes, and for a deeper understanding of aggregate-mortar interracial damage mechanism.

关 键 词：混凝土 交界面 劈裂 声发射 损伤 

分 类 号：TU528.01[建筑科学—建筑技术科学]