ICS93.060 CCSP21DB50 重庆市地方标准 DB50/T1391—2023 公路隧道湿喷混凝土 施工技术规范 2023–04-18发布 2023-07-18实施 重庆市市场监督管理局发布 DB50/T1391—2023 I目  次 前言...................................................................................................................................................................III 1范围.................................................................................................................................................................1 2规范性引用文件.............................................................................................................................................1 3术语和定义.....................................................................................................................................................1 4符号.................................................................................................................................................................2 5基本规定.........................................................................................................................................................2 6原材料.............................................................................................................................................................2 6.1胶凝材料.................................................................................................................................................3 6.2骨料.........................................................................................................................................................5 6.3外加剂.....................................................................................................................................................8 6.4纤维.......................................................................................................................................................10 6.5拌合用水...............................................................................................................................................10 7湿喷混凝土性能...........................................................................................................................................11 7.1拌合物性能...........................................................................................................................................11 7.2力学性能...............................................................................................................................................11 8湿喷混凝土配合比设计...............................................................................................................................12 8.1一般规定...............................................................................................................................................12 8.2配制强度的确定...................................................................................................................................12 8.3配合比计算...........................................................................................................................................12 8.4配合比试配、试喷、调整与确定.......................................................................................................13 9湿喷混凝土施工...........................................................................................................................................14 9.1一般规定...............................................................................................................................................14 9.2施工机具...............................................................................................................................................14 9.3作业准备...............................................................................................................................................14 9.4拌合物的制备与运输...........................................................................................................................14 9.5作业基本要求..........................................