摘   要：研究了偏高岭土掺量（0、10%、20%、30%）对铁铝酸盐水泥工作性、抗压强度、电阻率、抗硫酸盐侵蚀性能等的影响，并分析了其水化产物及水化放热情况。结果表明：随着偏高岭土掺量的增加，铁铝酸盐水泥浆体的流动度降低，凝结时间缩短，试件的抗压强度基本降低；适量掺入偏高岭土可以在一定程度上促进铁铝酸盐水泥早期水化，促进钙矾石的生成，且不会生成新的水化产物，在一定程度上提高试件的抗硫酸盐侵蚀性能。Abstract: The effects of metakaolin content (0, 10%, 20%, 30%) on the workability, compressive strength, electrical resistivity, and sulfate corrosion resistance of ferroaluminate cement were studied. The hydration products and hydration heat release were analyzed. The results show that with the increase of metakaolin content, the fluidity of ferroaluminate cement paste decreases, the setting time is shortened, and the compressive strength of the specimens basically decreases. Appropriate addition of metakaolin can promote the early hydration of ferroaluminate cement and the formation of ettringite to a certain extent, without generating new hydration products, thus improving the sulfate corrosion resistance of specimens to a certain extent.

蒋梦涵,廖宜顺,周琦,等.偏高岭土对铁铝酸盐水泥性能的影响研究[J].混凝土与水泥制品,2026,53(3):99-104. JIANG M H,LIAO Y S,ZHOU Q,et al.Study on the influence of metakaolin on the properties of ferroaluminate cement[J].China Concrete and Cement Products,2026,53(3):99-104 (in Chinese).

摘   要：为了探索超高性能混凝土（Ultra-high performance concrete，UHPC）的低碳化技术路径，设计了UC120、UC130 两个强度等级的 UHPC 基准组 JZ#1、JZ#2。在JZ#1基础上，通过掺入粉煤灰或矿粉、调整硅灰掺量，研究了矿物掺合料对UHPC拌合物性能、力学性能及减碳效果的影响；在JZ#2基础上，通过调整钢纤维掺量和砂胶比，研究了二者对UHPC力学性能和减碳效果的影响。结果表明：当粉煤灰掺量不超过10%、矿粉掺量不超过20%、硅灰掺量在10%~25%范围内时，对UHPC的拌合物性能和抗压强度无显著影响；适当降低钢纤维掺量至2.0%或提高砂胶比至0.9，均不会对UHPC的抗压强度产生显著影响；在UHPC的拌合物性能与力学性能均满足设计要求的前提下，掺入适量粉煤灰或矿粉，合理调整硅灰掺量、钢纤维掺量和砂胶比，均可实现显著的减碳效果。研究成果可为UHPC 的低碳化设计提供量化技术依据与优化方案，同时为建材行业实现“双碳”目标提供切实可行的技术路径。Abstract: In order to explore the low-carbon technical path of ultra-high performance concrete (UHPC), two UHPC reference groups (JZ#1 and JZ#2) with strength grades of UC120 and UC130 were designed. Based on JZ#1 group, the effects of mineral admixtures on the mixture performance, mechanical properties and carbon reduction effect of UHPC were investigated by incorporating fly ash or slag powder and adjusting the silica fume content. Based on JZ#2 group, the effects of steel fiber content and sand-binder ratio on the mechanical properties and carbon reduction effect of UHPC were studied by adjusting the two parameters. The results indicate that when the fly ash content does not exceed 10%, the slag powder content does not exceed 20%, and the silica fume content is within the range of 10% to 25%, there is no significant impact on the mixture performance and compressive strength of UHPC. Moreover, appropriately reducing the steel fiber content to 2.0% or increasing the sand-binder ratio to 0.9 will not significantly affect the compressive strength of UHPC. On the premise that both the mixture performance and mechanical properties of UHPC meet the design requirements, the incorporation of an appropriate content of fly ash or slag powder, and rational adjustment of silica fume content, steel fiber content and sand-binder ratio, can all achieve a remarkable carbon reduction effect. The research results can provide a quantitative technical basis and optimization schemes for the low-carbon design of UHPC, and meanwhile offer a feasible technical path for the building materials industry to achieve the "dual carbon" goals.

樊俊江,王琼,杨利香.低碳超高性能混凝土（UHPC）的配合比优化设计与减碳效果研究[J].混凝土与水泥制品,2026,53(3):93-98,109. FAN J J,WANG Q,YANG L X.Research on mix proportion optimization design and carbon reduction effect of low-carbon ultra-high performance concrete (UHPC)[J].China Concrete and Cement Products,2026,53(3):93-98,109 (in Chinese).

摘   要：为改善石膏基复合材料的韧性，根据工程水泥基复合材料（ECC）材料微观设计原理，选择聚乙烯（PE）纤维作为增强材料，研发了具有应变硬化和优异变形能力的超高延性石膏基复合材料，并分析了其在室内、绝干、浸水3种养护条件下的工作性、力学性能、耐水性能。结果表明：3种养护条件下，试件均呈现出显著的应变硬化特性，试件的抗拉强度在1.8~6.5 MPa之间，拉伸应变在4%~7%之间；纤维的掺入并未明显改善试件的耐水性能，但可显著改善试件的拉伸、压缩性能，提高拉伸变形能力和峰后压缩变形能力。Abstract: In order to improve the toughness of gypsum-based composites materials, polyethylene (PE) fiber was selected as a reinforcing material according to the micro-design principle of engineered cementitious composite(ECC) materials. The ultra-high ductility gypsum-based composite materials with strain hardening and excellent deformation capacity was developed, and its workability, mechanical properties and water resistance under indoor, absolute dryness and immersion curing conditions were analyzed. The results show that under 3 types of curing conditions, the specimens all show significant strain hardening characteristics, the tensile strengths of the specimens are between 1.8 MPa and 6.5 MPa, and the tensile strain is between 4% and 7%. The addition of fibers do not significantly improve the water resistance of the specimens, but it can significantly improve their tensile and compressive properties, as well as their tensile deformation ability and post peak compression deformation ability.

苏佶智,徐日昌,王义超,等.超高延性石膏基复合材料的力学及耐水性能研究[J].混凝土与水泥制品,2026,53(3):87-92. SU J Z,XU R C,WANG Y C,et al.Study on mechanical properties and water resistance of ultra-high ductility gypsum-based composite materials[J].China Concrete and Cement Products,2026,53(3):87-92 (in Chinese).

摘   要：对比研究了普通硅酸盐胶凝体系（基准组）和低碳硅铝酸盐胶凝体系（低碳组）的水化热特征及2种胶凝体系对超高性能混凝土（Ultra-high performance concrete，UHPC）工作性、力学性能和收缩性能的影响。结果表明：相比于普通硅酸盐胶凝体系，低碳硅铝酸盐胶凝体系的早期水化放热速率较低，水化放热速率峰值出现时间延迟，而水化放热总量基本相当；2组胶凝体系UHPC的扩展度、含气量和表观密度相近，但低碳组的凝结时间更长；低碳组UHPC的3 d抗压强度、动弹性模量均低于基准组，但后期抗压强度反超基准组，动弹性模量与基准组基本持平；低碳组UHPC在6 d龄期前的内部相对湿度高于基准组，对应的自收缩值低于基准组，6 d龄期后的内部相对湿度降低速率明显高于基准组，自收缩值高于基准组；低碳组UHPC的质量变化率小于基准组，干燥收缩变形也低于基准组。Abstract： A comparative study was conducted on the hydration heat characteristics of an ordinary Portland cementitious system (reference group) and a low-carbon silicoaluminate cementitious system (low-carbon group), as well as the effects of both cementitious systems on the workability, mechanical properties, and shrinkage behavior of ultra-high performance concrete (UHPC). The results show that, compared with the ordinary Portland cementitious system, the low-carbon silicoaluminate cementitious system exhibits a lower early hydration heat release rate and a delayed hydration heat peak, while the total hydration heat release remains essentially equivalent. The slump-flow, air content, and apparent density of UHPC prepared with the two cementitious systems are approximately similar, but the low-carbon group exhibits a longer setting time. The 3 d compressive strength and dynamic elastic modulus of the low-carbon group UHPC are lower than those of the reference group, while its long-term compressive strength exceeds that of the reference group and its dynamic elastic modulus remains essentially comparable to that of the reference group. The internal relative humidity of the low-carbon UHPC group before 6 d is higher than that of the reference group, with correspondingly lower autogenous shrinkage values. After 6 d, the rate of decrease in internal relative humidity of the low-carbon group is significantly higher than that of the reference group, and the autogenous shrinkage values are higher than those of the reference group. The mass change rate of the low-carbon UHPC group is lower than that of the reference group, resulting in correspondingly lower drying shrinkage deformation.

姜自华,徐文,周泽聪,等.基于低碳硅铝酸盐胶凝体系的UHPC性能研究[J].混凝土与水泥制品,2026,53(3):82-86. JIANG Z H,XU W,ZHOU Z C,et al.Performance study of UHPC based on low-carbon silicoaluminate cementitious system[J].China Concrete and Cement Products,2026,53(3):82-86 (in Chinese).

杨光,齐洋,马中成,等.橡胶集料混凝土三点弯曲试件损伤破坏的声发射表征[J].混凝土与水泥制品,2026,53(3):75-81. YANG G,QI Y,MA Z C,et al.Acoustic emission characterization of damage and failure in crumb rubber concrete specimens under three-point bending[J].China Concrete and Cement Products,2026,53(3):75-81 (in Chinese).