DB21∕T 2348-2014 混凝土增效剂

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1、ICS91.100.30Q10/29DB21辽宁省地方标准DB21/T2348—2014混凝土增效剂Concretesynergisticagent2014-07-15发布2014-09-15实施辽宁省质量技术监督局发布DB21/T2348—2014目次前言.................................................................................II1范围........................................................

2、.......................12规范性引用文件.....................................................................13术语和定义.........................................................................14要求...............................................................................14.1混凝土

3、增效剂指标要求...........................................................24.2受检混凝土性能.................................................................24.3碱含量.........................................................................25试验方法...........................................

4、................................25.1氯离子含量、硫酸钠含量、密度、pH值及碱含量....................................25.2外观...........................................................................25.3泌水率比、凝结时间之差、抗压强度比、28d收缩率比...............................25.41h坍落度经时变化量之差....................

5、....................................35.5对钢筋的锈蚀作用...............................................................36检验规则...........................................................................36.1取样及组批规则.................................................................36.

6、2检验分类.......................................................................36.3判定规则.......................................................................37标志、包装、运输和储存.............................................................37.1标志....................................

7、.......................................37.2包装...........................................................................47.3运输与储存.....................................................................4附录A（规范性附录）试验用材料及配合比..............................................5附录B（规范

8、性附录）1h坍落度经时变化量之差..........................................7IDB21/T2348—2014前言本标准按照GB/T1.1-2009给出的规则起草。本