超声法检测混凝土缺陷技术规程cecs21-2000

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1、中国工程建设标准化协会标准超声法检测混凝土缺陷技术规程TechnicalspecificationforinspectionofconcretedefectsbyultrasonicmethodCECS21:2000陕西省建筑科学研究设计院主编单位:上海同济大学批准单位:中国工程建设标准化协会实施日期:2001年1月1日CECS21:2000679月U吕根据中国工程建设标准化协会(98)建标协字第08号《关于下达1998年第一批推荐胜标准编制计划的函》的要求，制订本标准。本规程是在《超声法检测混凝土缺陷技术规程》CECS21a90的基础上，吸收

2、国内外超声检测仪器最新成果和超声检测技术的新经验，结合我国建设工程中混凝土质量控制与检测的实际需要进行修订的。本规程的主要内容包括超声法检测混凝土缺陷的适用范围，检测设备技术要求，声学参数测量方法，混凝土裂缝深度、混凝土不密实区、新老混凝土结合质量、灌注桩和钢管混凝土缺陷等的检测及判断方法。本规程主要对“超声波检测设备”及“声学参数测量”两章作了全面修订:将原“浅裂缝检测”和“深裂缝检侧”两章合并成“裂缝深度检测”一章;删除了“匀质性检测”一章;对平测裂缝深度的判定、混凝土密实性检测的异常数据判断和表面损伤层检测的数据处理等方法做了补充和完善;

3、增加了灌注桩和钢管混凝土缺陷检测。现批准协会标准《超声法检测混凝土缺陷技术规程》，编号为CECS21:2000，推荐给工程建设设计、施工、使用单位采用。本规程由中国工程建设标准化协会混凝土结构委员会归口管理，由陕西省建筑科学研究设计院(陕西省西安市环城西路北段272号，邮编:710082)负责解释。在使用中如发现需要修改和补充之处，请将意见和资料寄解释单位主编单位:陕西省建筑科学研究设计院上海同济大学参编单位:中国建筑科学研究院结构研究所水利电力部南京水利科学研究院北京市建筑工程质检中心第三检测所重庆市建筑科学研究院主要起草人张治泰李乃平李为杜

4、林维正张仁瑜罗骥先楼存亭林文修中国工程建设标准化协会2000年11月10日680>I,利水电卷·试验目次1总则·····························································································⋯⋯6812术语、符号·.........................................................................................6813超声波检测设备···············

5、················。································，················⋯⋯6824声学参数测量·················································································⋯⋯6845裂缝深度检测·················································································⋯⋯6856不密实区和空洞检测········

6、·················································，··············⋯⋯6887混凝土结合面质量检测·····································································⋯⋯6908表面损伤层检测··············································································⋯⋯6919灌注桩混凝土缺陷检测···················

7、··················································⋯⋯69310钢管混凝土缺陷检测········································································⋯⋯695附录A测量空气声速进行声时计量校验···········································⋯⋯，’二696附录B径向振动式换能器声时初读数(t-)的测量····································⋯⋯697

8、附录C空洞尺寸估算方法························································...·····