摘   要：依托某地下车站工程，设计了无柔性防水地下车站侧墙刚性防水体系，研究了其抗裂防渗效果。结果表明：通过合理的配合比设计可有效改善混凝土的力学性能和体积稳定性；采用合理的刚性防水施工技术（如施工缝定位划分及构造优化、混凝土入模温度控制等）可有效解决侧墙收缩开裂、不密实及接缝薄弱区引起的渗漏水问题，从而提升地下车站整体防水性能。Abstract: Based on a certain underground station project, a rigid waterproof system of the side walls for an underground station without flexible waterproofing was designed, and its crack resistance and anti-seepage effects were studied. The results indicate that reasonable mix proportion design can effectively improve the mechanical properties and volume stability of concrete. The use of reasonable rigid waterproofing construction techniques, such as positioning and structural optimization of construction joints, temperature control of concrete molding, etc., can effectively solve the problems of side wall shrinkage cracking, lack of compactness, and leakage caused by weak joint areas, thereby improving the overall waterproofing performance of underground stations.

刘永.轨道交通地下车站侧墙刚性防水技术研究[J].混凝土与水泥制品,2025(9):79-83. LIU Y.Study on rigid waterproofing technology of side walls for underground station in rail transit[J].China Concrete and Cement Products,2025(9):79-83.

摘   要：以苏州轨道交通8号线镬底潭车辆段上盖平台开发项目为背景，设计制备了补偿收缩混凝土，监测并研究了不同位置处的混凝土内部温度、微应变。结果表明：所制备的补偿收缩混凝土具有较好裂缝控制效果，能够有效降低开裂风险；30 d时，验证段上盖结构中各层梁的内部温度修正后微应变较对应各层板高，一层梁、板结构内部温度修正后微应变较二层梁、板结构更高，板的开裂风险高于梁，二层梁、板的开裂风险高于一层梁、板；30 d时，一层梁下表面混凝土温度修正后微应变较中心和上表面低，梁下表面混凝土的开裂风险更高。Abstract: Based on the development project of the upper cover platform of Suzhou Metro Line 8 Wodi Tan Depot, shrinkage-compensating concrete was designed and prepared, and the internal temperature and microstrain of the concrete at different locations were monitored. The results indicate that the prepared shrinkage-compensating concrete has good crack control effect and can effectively reduce the risk of cracking. At 30 d, the internal temperature corrected microstrain of each layer of beams in the upper cover structure of the verification section is higher than that of the corresponding layer plates. The internal temperature corrected microstrain of the first layer beam and plate structure is higher than that of the second layer beam and plate structure, and the cracking risk of the plate is higher than that of the beam, and the cracking risk of the second layer beam and plate is higher than that of the first layer beam and plate. At 30 d, the microstrain of the concrete on the lower surface of the beam after temperature correction is lower than that on the center and upper surfaces, and the risk of cracking in the concrete on the lower surface of the beam is higher.

王德民,李世久,夏高峰,等.补偿收缩混凝土在某大型地铁结构工程中的应用研究[J].混凝土与水泥制品,2025(9):74-78. WANG D M,LI S J,XIA G F,et al.Application research of shrinkage-compensating concrete in large-scale metro structure project[J].China Concrete and Cement Products,2025(9):74-78.

摘   要：针对核电工程筏板基础大体积混凝土结构的开裂问题，通过原材料优选、掺入粉煤灰和减水剂等方式优化了大体积混凝土的配合比，并采用FEA有限元分析软件建立了早期开裂风险分析模型，通过温度及应力场分析确定了保温保湿措施及相关养护指标。结果表明：通过配合比优化，可在保证大体积混凝土强度的基础上，有效改善其绝热温升性能；依据有限元分析结果提出的基于入模温度控制、搭设养护棚、布设抗裂钢筋的裂缝控制方法的成效较好，混凝土表面未见裂缝，有效实现了大体积混凝土的科学评估监测和动态调控养护。Abstract: In response to the cracking problem of mass concrete structures in nuclear power engineering raft foundations, the mix proportion of mass concrete was optimized through raw material selection, addition of fly ash and water reducing agents, and an early cracking risk analysis model was established by using FEA finite element analysis software. Thermal and moisture preservation measures and related maintenance indicators were determined through temperature and stress field analysis. The results indicate that by optimizing the mix proportion, the adiabatic temperature rise performance of mass concrete can be effectively improved while ensuring its strength. The crack control method based on mold temperature control, setting up curing sheds, and laying anti crack steel, proposed according to the results of finite element analysis, has achieved good results. No cracks are found on the surface of the concrete, effectively realizing the scientific evaluation, monitoring, and dynamic control and curing of mass concrete.

吕光晔,黄阁,张健,等.核电站筏板基础大体积混凝土裂缝控制关键技术研究[J].混凝土与水泥制品,2025(9):68-73. LYU Guangye, HUANG Ge, ZHANG Jian,et al.Research on key technologies for crack control of mass concrete of raft foundation for nuclear power plants[J].China Concrete and Cement Products,2025(9):68-73.

摘   要：为制备出适用于某超深异型潜池大体积混凝土工程要求的C40抗渗防裂混凝土，通过调控水胶比、矿物掺合料掺量和砂率筛选出了2组工作性、强度、抗渗性能较好的混凝土配合比，在此基础上，掺入聚丙烯纤维，提高浆骨比，进行了配合比优化，并测试优化后混凝土的性能。结果表明：通过掺入聚丙烯纤维、提高浆骨比优化配合比后，B7J2X0.9和C4J2X0.9组混凝土的工作性良好，28 d抗压强度均大于45 MPa，抗渗等级均＞P12，抗裂等级均为Ⅱ级，满足超深异型潜池大体积混凝土要求。Abstract: In order to prepare C40 impermeability and crack resistance concrete suitable for the requirements of a mass concrete project in a certain ultra deep and irregular submerged pool, two sets of concrete mix proportions with good workability, strength, and impermeability were screened by adjusting the water-binder ratio, mineral admixture content, and sand ratio. On this basis, polypropylene fiber were added, the slurry-aggregate ratio was improved, and the mix proportion was optimized. The performance of the optimized concrete was tested. The results show that after adding polypropylene fiber and increasing slurry-aggregate ratio, the workability of B7J2X0.9 and C4J2X0.9 group concrete is good, the compressive strength at 28 d is greater than 45 MPa, the impermeability grade is ＞P12, and the crack resistance grade is Ⅱ, meeting the requirements of mass concrete for ultra deep and irregular submerged pool.

胡世帅.C40抗渗防裂混凝土配合比优化设计及性能研究[J].混凝土与水泥制品,2025(9):63-67,73. HU S S.Mix proportion optimized design and performance study of C40 impermeability and crack resistance concrete[J].China Concrete and Cement Products,2025(9):63-67,73.