卢长彬

【摘 要】对道桥防水混凝土工程面言，合理选材和设计，是达到工程防水的先决条件，而施工则是使防水效果付诸实现的决定性问题。由于防水工程要求一定的抗渗性，道桥防水混凝土工程的施工就特别需要强调“严”字：从施工准备到混凝土养护，基坑回填，自始至终都应采取严密措施，以确保每一环节的施工质量，使混凝土大面积及各细部构造均严密不漏。从选择经济合理的施工方案;混凝土原材料的准备及混凝土施工配合比的选择;作好基坑降排水及基础垫层的施工;做好质量思想教育工作;建设单位在道桥防水混凝土工程施工之前，应到质量监督站办理道桥防水混凝土工程质量监督手续;模板与钢筋等方面对道桥防水混凝土施工质量控制提出了自己的看法和建议，具有一定的参考价值。

【关键词】道桥防水混凝土;施工;质量控制

Research on Strengthening Measures for Construction Management of Road and Bridge Waterproof Concrete

Lu Chang-bin

（Hulunbeier Highway Administration Bureau Zhalantun Highway Maintenance Management Office Inner Mongolia 021000）

【Abstract】For the road bridge waterproof concrete project， the rational selection and design is the prerequisite for achieving waterproofing of the project， and the construction is the decisive problem to realize the waterproof effect. Because waterproof engineering requires a certain degree of impermeability， the construction of Daoqiao waterproof concrete project needs to emphasize the word "strict"： from construction preparation to concrete maintenance， foundation pit backfilling， strict measures should be taken from beginning to end to ensure each link. The quality of the construction makes the large area of the concrete and the detailed structure of each part tight. From the selection of economic and reasonable construction plan; the preparation of concrete raw materials and the selection of concrete construction mix ratio; the construction of foundation pit drainage and foundation cushion; the quality and ideological education; the construction unit before the construction of Daoqiao waterproof concrete project It is necessary to go to the quality supervision station to handle the quality supervision procedures of the road and bridge waterproof concrete project; the formwork and steel bars have put forward their own views and suggestions on the quality control of the bridge waterproof concrete construction， which has certain reference value.

【Key words】Road bridge waterproof concrete;Construction;Quality control

1. 前言

（1）道橋防水混凝土也称结构自防水，可通过调整混凝土的配合比或掺加外加剂、钢纤维、合成纤维等，并配合严格的施工及施工管理，减少混凝土内部的空隙率或改变孔隙形态、分布特征，从而达到防水（防渗）的目的。在GB 50108-2008《地下工程防水技术规范》中规定：一、二、三级明挖法地下工程防水设防应包括一道道桥防水混凝土。

（2）对道桥防水混凝土工程面言，合理选材和设计，是达到工程防水的先决条件，而施工则是使防水效果付诸实现的决定性问题。由于防水工程要求一定的抗渗性，道桥防水混凝土工程的施工就特别需要强调“严”字：从施工准备到混凝土养护，基坑回填，自始至终都应采取严密措施，以确保每一环节的施工质量，使混凝土大面积及各细部构造均严密不漏。……