DB21T 2441-2015 辽宁省水利工程质量检测管理规范.pdf

《DB21T 2441-2015 辽宁省水利工程质量检测管理规范.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、ICS93.010P40/43DB21辽宁省地方标准DB21/T2441—2015严寒地区预制混凝土U型槽及应用技术规程TechnicalspecificationforU-typeconcretegrooveprefabricatingandapplicationinseverecoldarea2015-03-01发布2015-05-01实施辽宁省质量技术监督局发布学兔兔www.xuetutu.comDB21/T2441—2015目次前言..............................................................................

2、..III1总则................................................................................12规范性引用文件......................................................................13术语................................................................................14代号、标记、规格尺寸.....................................

3、...........................25原材料..............................................................................35.1水泥............................................................................35.2细骨料..........................................................................35.3粗骨料....................

4、......................................................35.4掺合料..........................................................................35.5外加剂..........................................................................35.6水..............................................................................3

5、6基本规定............................................................................46.1预制混凝土U型槽生产的一般要求..................................................46.2外形尺寸........................................................................46.3外观质量..............................................................

6、..........46.4预制混凝土U型槽的混凝土抗压强度等级不应低于C20。..............................46.5预制混凝土U型槽抗渗性..........................................................46.6预制混凝土U型槽抗冻性..........................................................46.7外压力破坏荷载、内压力破坏荷载..................................................57试验方法.........

7、...................................................................57.1尺寸偏差........................................................................57.2外观质量检验...........................................