刘华东,张荣华,蒋小勇,桂根生,吴 鑫
刘华东,张荣华,蒋小勇,等.综合管廊用气密性混凝土的制备及应用研究[J].混凝土与水泥制品,2021(6):46-49.
LIU H D,ZHANG R H,JIANG X Y,et al.Preparation and Application of Airtight Concrete for Utility Tunnel[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):46-49.
综合管廊用气密性混凝土的制备及应用研究
刘华东,张荣华,蒋小勇,桂根生,吴 鑫
刘华东,张荣华,蒋小勇,等.综合管廊用气密性混凝土的制备及应用研究[J].混凝土与水泥制品,2021(6):46-49.
LIU H D,ZHANG R H,JIANG X Y,et al.Preparation and Application of Airtight Concrete for Utility Tunnel[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):46-49.
摘 要:为避免综合管廊燃气泄漏造成的安全隐患,制备了气密性能符合要求的气密性混凝土,研究了胶凝材料用量、水胶比、砂率、矿物掺合料以及外加组分对综合管廊用气密性混凝土性能的影响。根据试验结果,成功制备了工作性良好的C40气密性混凝土,其透气系数达到4.72×10-12 cm/s,并成功应用于实际工程。
Abstract: In order to avoid the potential safety hazard caused by gas leakage in utility tunnel, the effects of cementitious material dosage, W/C, sand ratio, mineral admixtures and additional components on airtight concrete for utility tunnel were studied. According to the test results, C40 airtight concrete with good workability is successfully prepared, and its air permeability coefficient reaches 4.72×10-12 cm/s, which is applied to practical engineering successfully.
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