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港珠澳大桥自防水混凝土的配制技术研究
作者：焦守增1，张跃辉2
（1.中铁上海工程局集团有限公司城市轨道交通工程分公司，上海 201900；
2.中交第三航务工程局有限公司江苏分公司，江苏 连云港 222042）
摘要：依托港珠澳大桥具体工程实例，对海洋氯盐环境下大体积混凝土自防水的配合比设计进行了研究。通过试验确定胶凝材料用量、矿粉掺量、入模温度等参数对混凝土绝热温升、升温速率的影响，并结合混凝土抗渗性的试验结果，确定了符合设计要求的自防水混凝土配合比。
关键词：自防水混凝土；配合比设计；温度裂缝；抗渗性；适配强度
中图分类号：TU528.32 文献标识码：A 文章编号：1001-702X（2019）04-0099-04
Study on self waterproofing concrete mixing technology for HongKong-Zhuhai-Macao Bridge
JIAO Shouzeng1，ZHANG Yuehui2
（1.Shanghai Civil Engineering Co. Ltd. of CREC Urban Rail Transit Engineering Company，shanghai 201900，China；
2.Jiangsu Branch of CCCC Third Harbor Engineering Company Co. Ltd.，Lianyungang 222042，China）
Abstract：Based on the specific engineering examples of the Hong Kong-Zhuhai-Macao Bridge，the design of the mix ratio of large-volume concrete self-waterproof in the marine chlorine salt environment was studied. The effects of the gelled material dosage，mineral powder dosage，and the temperature of the mold on the adiabatic temperature rise and heating rate of concrete were determined through experiments. Combined with the test results of concrete impermeability，the self-waterproof concrete mix ratio meeting the design requirements was determined.
Key words：self-waterproof concrete，mix ratio design，temperature crack，the permeability resistance，the intensity of adapter