摘   要：介绍了低碳混凝土的基本理念，总结了实现低碳混凝土的技术途径（直接减碳、间接减碳和碳汇技术）和混凝土碳排放评价方法，分析了低碳混凝土发展面临的挑战，并提出了低碳混凝土和抽水蓄能协同发展的技术理念。 Abstract: The fundamental concept of low-carbon concrete is introduced, the technical approaches(direct carbon reduction, indirect carbon reduction and carbon sequestration technology) to realize low-carbon concrete are summarized, and the evaluation methods of concrete carbon emission are sorted out, the challenges to the development of low-carbon concrete are analyzed. Furthermore, the technical concept of the synergistic development of low-carbon concrete and pumped storage is put forward.

刘硕,关彬.低碳混凝土技术研究与应用综述[J].混凝土与水泥制品,2025(3):86-89,93. LIU S,GUAN B.A review of research and application of low-carbon concrete technology[J].China Concrete and Cement Products,2025(3):86-89,93.

摘   要：通过正交试验研究了矿渣掺量（20%、30%、40%）、水胶比（0.30、0.33、0.36）和碱激发剂模数（1.2、1.4、1.6）对地聚物混凝土与既有混凝土试件（组合试件）界面黏结性能的影响。结果表明：组合试件呈脆性破坏，断裂面位于界面处；各因素对组合试件界面黏结性能影响的大小顺序为矿渣掺量＞碱激发剂模数＞水胶比，最佳配合比为矿渣掺量40%、水胶比0.36、碱激发剂模数1.4。 Abstract: The effects of the slag content(20%, 30%, 40%), water-binder ratio (0.30, 0.33, 0.36) and modulus(1.2, 1.4, 1.6) of alkali activator on the interfacial bonding performance between geopolymer concrete and existing concrete specimens(combined specimens) were investigated using an orthogonal experimental design. The results show that the combined specimens exhibit brittle failure, with the fracture surface primarily located at the interface. The effect of these factors on the interfacial bonding performance of combined specimens is ranked as follows: the content of slag ＞ modulus of alkali activator ＞ water-binder ratio. The optimal mix proportion is determined to be a slag content of 40%, the water-binder ratio of 0.36, and the modulus of alkali activator of 1.4.

姜天华,张淳,万聪聪,等.地聚物混凝土与既有混凝土界面黏结性能的试验研究[J].混凝土与水泥制品,2025(3):90-93. JIANG T H,ZHANG C,WAN C C,et al.Experimental study on the interfacial bonding performance between geopolymer concrete and existing concrete[J].China Concrete and Cement Products,2025(3):90-93.

摘   要：以水泥、铁尾矿砂和羟丙基甲基纤维素为主要原材料配制了干混砂浆，研究铁尾矿砂的颗粒级配对砂浆工作性和力学性能的影响，并进行了机理分析。结果表明：随着铁尾矿砂中粒径＜0.075 mm颗粒占比的减少，砂浆的稠度增大，保水率降低，7 d、28 d抗折与抗压强度均先增大后减小；综合考虑工作性和力学性能，建议铁尾矿砂的最佳颗粒级配为粒径＜0.075、0.075~0.150、0.150~0.300、0.300~0.600 mm的颗粒占比分别为10%、10%、50%、30%。 Abstract: A dry-mixed mortar was prepared by using cement, iron tailings sand, and hydroxypropyl methyl cellulose as the main raw materials. The influence of particle size distribution of iron tailings sand on the workability and mechanical properties of the mortar was studied, and the mechanism was analyzed. The results show that as the proportion of particles with particle size of less than 0.075 mm in the iron tailings sand decreases, the consistency of the mortar increases, the water retention rate decreases, and the 7 d and 28 d flexural strength and compressive strength first increase and then decrease. Taking into account both workability and mechanical properties, it is recommended that the optimal particle size distribution for iron tailings sand be 10%, 10%, 50%, and 30% of particles with particle sizes <0.075, 0.075~0.150, 0.150~0.300, and 0.300~0.600 mm, respectively.

宿常智,黄勇,杨秋菊,等.铁尾矿砂的颗粒级配对干混砂浆性能的影响[J].混凝土与水泥制品,2025(3):94-96,100. SU C Z,HUANG Y,YANG Q J,et al.Effects of particle size distribution of iron tailings sand on performance of dry-mixed mortar[J].China Concrete and Cement Products,2025(3):94-96,100.

摘  要：对比研究了单掺和复掺矿物掺合料（粉煤灰、超细矿粉、普通矿粉）对高性能混凝土（HPC）工作性、力学性能和早期抗裂性能的影响。结果表明：当超细矿粉与粉煤灰以8∶2质量比复掺时，混凝土的工作性较好，28 d抗压强度最高，早期抗裂性能最好；单掺超细矿粉组试件的28 d抗折强度略均低于单掺普通矿粉组试件，矿粉与粉煤灰复掺组试件的28 d抗折强度略低于对应的单掺矿粉组试件；综合而言，相比超细矿粉与粉煤灰2∶8和5∶5的复掺比例，8∶2复掺时，HPC的综合性能最好。 Abstract: The effects of individual and compound mixing of mineral admixtures(fly ash, ultrafine mineral powder, and ordinary mineral powder) on the workability, mechanical properties, and early cracking resistance of high-performance concrete(HPC) were investigated comparatively. The results show that when ultrafine mineral powder and fly ash are mixed in the mass ratio of 8∶2, the concrete has the good workability, the highest 28 d compressive strength, and the greatest early cracking resistance. The 28 d flexural strength of specimen with ultrafine mineral powder alone is slightly lower than that of the specimen with ordinary mineral powder alone, and the 28 d flexural strength of specimen with composite addition of mineral powder and fly ash is slightly lower than that of specimen with mineral powder alone. Overall, compared to the compounding ratios of 2∶8 and 5∶5 for ultrafine mineral powder and fly ash, when the compounding ratio is 8∶2, HPC exhibits the best comprehensive performance.

摘   要：研究了粉磨时间对循环流化床粉煤灰（CFB灰）性能及水化特性的影响。结果表明：随着粉磨时间的增加，CFB灰颗粒变细，表面粗糙程度降低，28 d强度活性指数基本呈先增大后减小的趋势，最佳粉磨时间为4 min；适当时间的粉磨处理使得水泥-CFB灰复合胶凝材料的水化诱导期延长，累计放热量减小，水化产物C-S-H、AFt的生成量增多；水泥-CFB灰复合胶凝材料的早期反应以水泥水化为主，CFB灰主要起微集料填充效应，随着龄期的增加，CFB灰的火山灰活性增强。 Abstract: The influence of grinding time on the performance and hydration characteristics of circulating fluidized bed fly ash (CFB ash) was studied. The results show that with the increase of grinding time, the CFB ash particles become finer, the surface roughness decreases, and the 28 d strength activity index show a trend of first increasing and then decreasing, and the optimal grinding time is 4 min. Appropriate time for grinding treatment prolongs the hydration induction period of cement-CFB ash composite cementitious materials, reduces the cumulative heat release, and increases the generation of hydration products C-S-H and AFt. The early reaction of cement-CFB ash composite cementitious material is mainly cement hydration, and CFB ash mainly plays a role in micro aggregate filling. With the increase of age, the volcanic ash activity of CFB ash increases.

胡瑶瑶,邵明扬,张宁,等.粉磨时间对循环流化床粉煤灰性能及水化特性的影响[J].混凝土与水泥制品,2025(3):101-105. HU Y Y,SHAO M Y,ZHANG N,et al.Effect of grinding time on performance and hydration characteristics of circulating fluidized bed fly ash[J].China Concrete and Cement Products,2025(3):101-105.

摘  要：用四种不同性能的再生骨料制备了无机人造石，研究了再生骨料性能对无机人造石板试件力学性能的影响，并分析了微观机理。结果表明：由四种不同性能再生骨料制备而成的无机人造石板试件的力学性能优良，压缩强度和抗弯强度均满足相关标准要求；再生骨料的微粉含量和吸水率过高会降低无机人造石板试件的力学性能，削弱无机人造石界面过渡区及浆体的显微硬度；随着压碎指标的增大，无机人造石板试件的力学性能基本先增后降。 Abstract: Inorganic artificial stone was prepared with four kinds of recycled aggregates of different performance, and the influence of recycled aggregate performance on the mechanical properties of inorganic artificial stone board specimen was investigated, and the mechanism was analyzed. The results show that, the mechanical properties of inorganic artificial stone board specimen prepared with four different properties of recycled aggregates are excellent, and the compressive strength and flexural strength meet the requirements of the relevant specification. Excessive fine powder content and water absorption rate of recycled aggregates reduce the mechanical properties of inorganic artificial stone board specimen, and weaken the microhardness of interfacial transition zone and slurry of inorganic artificial stone. With the increase of the crushing index, the mechanical properties of inorganic artificial stone board specimen basically basically first increase and then decrease.

姚杰,徐鑫,邹长根,等.再生骨料对水泥基无机人造石性能的影响[J].混凝土与水泥制品,2025(3):106-111. YAO J,XU X,ZOU C G,et al.Effects of the recycled aggregate on properties of cement-based inorganic artificial stone[J].China Concrete and Cement Products,2025(3):106-111.