李新新,刘晓,吴宇凡,等.硅烷偶联剂功能基团对水泥基材料疏水性的影响[J].混凝土与水泥制品,2025(5):1-7. LI X X,LIU X,WU Y F,et al.Effect of functional groups of silane coupling agents on the hydrophobic property of cement-based materials[J].China Concrete and Cement Products,2025(5):1-7.

吕兴栋,夏求林.有机膦酸化合物对水泥砂浆性能影响的研究[J].混凝土与水泥制品,2025(5):8-12. LYU X D,XIA Q L.Study on the influence of organic phosphonic acid compounds on the physical properties of cement mortar[J].China Concrete and Cement Products,2025(5):8-12.

摘   要：研究了黏度改性材料掺量（0、12%、15%、18%）对C55高强混凝土的坍落度、扩展度、抗压强度、收缩性能的影响，并基于扫描电镜试验和压汞法测孔技术分析了试件的微观形貌和孔结构。结果表明：随着黏度改性材料掺量的增加，试件的扩展度和坍落度增加，抗压强度先增加后降低，当掺量为15%时抗压强度最高；黏度改性材料可以减少混凝土的干燥收缩和自生体积变形，降低混凝土的总孔隙率，增加无害孔（≤20 nm）、少害孔（20~50 nm）的数量，降低有害孔（＞50 nm）的数量,优化孔径；掺黏度改性材料的试件可生成较多的C-S-H凝胶与AFt，两者共同构成网络空间结构，填充孔隙，减小孔径尺寸。 Abstract: The influence of viscosity modified material dosage(0, 12%, 15%, 18%) on the slump, slump-flow, compressive strength, and shrinkage properties of C55 high strength concrete was studied, and the microstructure and pore structure of specimens were analyzed by scanning electron microscopy experiments and mercury intrusion porosimetry. The results show that with the increasing of viscosity modified material dosage, the slump-flow and slump of the specimens increase, and the compressive strength first increases and then decreases, and the compressive strength is highest when the dosage is 15%. Adding viscosity modified materials can reduce drying shrinkage, autogenous volume deformation, and the total porosity of concrete, and increase the number of harmless pores(≤20 nm) and less harmful pores(20~50 nm), and reduce the number of harmful pores(>50 nm), thus optimizing pore size. More C-S-H gel and AFt can be generated in the specimen mixed with viscosity modified materials, which together form the network space structure, fill the pores, reduce the pore size.

舒建建,刘润泽,龙勇,等.黏度改性材料对C55高强混凝土性能的影响研究[J].混凝土与水泥制品,2025(5):13-17. SHU J J,LIU R Z,LONG Y,et al.Effect of viscosity modified materials on properties of C55 high strength concrete[J].China Concrete and Cement Products,2025(5):13-17.

摘   要：分析了不同碱酸比、缓凝组分及掺量下磷酸镁水泥的早期抗压强度发展规律，优选了磷酸镁水泥的最佳配合比；在此基础上，选取粉煤灰、钢渣、偏高岭土三种矿物掺合料与磷酸镁水泥组合成不同胶凝材料体系，调整胶凝材料各组分占比，制备了港区混凝土路面用修补砂浆，并对其抗压强度、耐磨性能、黏结强度、抗氯离子渗透性能、抗硫酸盐侵蚀性能进行了研究。结果表明：磷酸镁水泥的最佳配合比为碱酸比为1∶0.25、缓凝组分为硼砂+有机酸+磷酸氢二钠、缓凝组分掺量为12%；修补砂浆综合性能最佳的胶凝材料各组分占比为磷酸镁水泥85%、粉煤灰6%、钢渣3%、偏高岭土6%。 Abstract: The early compressive strength of magnesium phosphate cement was analyzed under different alkaline-acid ratios, retarding components and dosage, and the optimal mix proportion of magnesium phosphate cement was optimized. On this basis, three kinds of mineral admixtures(fly ash, steel slag, and metakaolin) were selected to combine with magnesium phosphate cement to form different cementitious material systems, and the percentage of each component of the cementitious material was adjusted, to prepare the repair mortar for concrete pavement in harbor area, and the compressive strength, abrasion resistance, bond strength, chloride penetration resistance, sulfate erosion resistance of the repair mortar were studied. The results show that the optimal mix proportion of magnesium phosphate cement is the alkaline-acid ratio of 1∶0.25, with a retarding component of borax+organic acid+disodium hydrogen phosphate, and a retarding component dosage of 12%. The optimal mix proportion of various components in the cementitious material with the best comprehensive performance for repair mortar is 85% magnesium phosphate cement, 6% fly ash, 3% steel slag, and 6% metakaolin.

萧白.磷酸镁水泥在港区混凝土路面快速修补中的应用研究[J].混凝土与水泥制品,2025(5):18-22. XIAO B.Application study of magnesium phosphate cement in rapid repair of concrete pavement in harbor area[J].China Concrete and Cement Products,2025(5):18-22.

摘   要：对比分析了甲酸钙、无水硫酸钠和CSH晶核剂3种早强剂对扰动条件下混凝土力学性能、黏结强度、分层情况及微观结构的影响。结果表明：适量甲酸钙和CSH晶核剂对混凝土的抗扰动性能有明显提升作用，无水硫酸钠则相对较弱；掺入1.0%甲酸钙或1.5%CSH晶核剂时，混凝土的抗压强度和新旧混凝土黏结强度显著提升；适量早强剂的掺入可以优化混凝土骨料分布及骨料排列状况；掺入适量甲酸钙和CSH晶核剂改善了扰动后混凝土的微观结构，有效抑制了裂缝的扩展。 Abstract: The effects of three types of early-strength agent (scalcium formate, anhydrous sodium sulfate, and CSH nucleating agent) on the mechanical properties, bond strength, delamination, and microstructure of concrete under disturbance conditions were compared. Results show that appropriate content of calcium formate and CSH nucleating agent can significantly improve anti-disturbance performance of concrete, while anhydrous sodium sulfate has a weaker effect. Compressive strength of concrete and bond strength between new and old concrete are significantly improved with addition of 1.0% calcium formate and 1.5% CSH nucleating agent. The appropriate content of early-strength agent improves the distribution of aggregate and its arrangement. The appropriate content of calcium formate and CSH nucleating agent can improve the mircostructure of concrete after disturbance, and effectively suppress the expansion of crack.

王玲,蔡同星,夏前进,等.早强剂对混凝土抗扰动性能的影响[J].混凝土与水泥制品,2025(5):23-27,32. WANG L,CAI T X,XIA Q J,et al.Influence of early-strength agents on the anti-disturbance performance of concrete[J].China Concrete and Cement Products,2025(5):23-27,32.

摘   要：研究了SAP掺量及额外水用量对自密实混凝土工作性、抗压强度、长期收缩性能的影响，并建立了自密实混凝土收缩预测模型。结果表明：随着SAP掺量及额外水用量的增加，自密实混凝土的工作性提高，7 d抗压强度基本降低，60 d抗压强度先增加后降低，收缩值降低；所建立的自密实混凝土收缩预测模型拟合程度较好，R2均大于0.9，可以有效预测自密实混凝土的收缩。 Abstract: The influence of SAP dosage and additional water dosage on the workability, compressive strength and long-term shrinkage performance of self-compacting concrete was studied, and a shrinkage prediction model for self-compacting concrete was proposed. The results show that with the increase of SAP dosage and additional water dosage, the workability of self-compacting concrete increases, the compressive strength basically decreases at 7 d, but increases first and then decreases at 60 d, and shrinkage value decreases. The developed shrinkage prediction model for self-compacting concrete is well fitted with R2 greater than 0.9, indicating a good fit and effective prediction of the shrinkage of self-compacting concrete.

夏宇航,苏有文,文江.SAP内养护自密实混凝土收缩预测模型研究[J].混凝土与水泥制品,2025(5):28-32. XIA Y H,SU Y W,WEN J.Study on shrinkage prediction model of SAP internal curing self- compacting concrete[J].China Concrete and Cement Products,2025(5):28-32.