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
Research on mix proportion optimization design and carbon reduction effect of low-carbon ultra-high performance concrete (UHPC)
关键词：
超高性能混凝土（UHPC）；矿物掺合料；砂胶比；钢纤维掺量；拌合物性能；力学性能；减碳效果
Key words：
Ultra-high performance concrete (UHPC); Mineral admixture; Sand-binder ratio; Steel fiber content; Mixture performance; Mechanical property; Carbon reduction effect
刊期：
2026年第3期
DOI：
10.19761/j.1000-4637.24090485
文章编号：
基金项目：
上海市“科技创新行动计划”碳达峰碳中和专项项目（22dz1207300）。
作者：
樊俊江，王 琼，杨利香
单位：
上海市建筑科学研究院有限公司，上海 200032
摘要
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.
结论
（1）UHPC 是一种高碳排放型水泥基材料，水泥与钢纤维是其碳排放的核心来源，通过掺合料适量替代水泥、适当提高砂胶比以减少水泥用量，或直接适当降低钢纤维掺量，是降低UHPC高碳排放的关键技术措施。
（2）在JZ#1基础上，当粉煤灰掺量不超过10%或矿粉掺量不超过20%时，对UHPC的拌合物性能和抗压强度无显著影响，但大于上述掺量易引起UHPC的拌合物性能和抗压强度下降。
（3）在JZ#1基础上，当硅灰掺量在10%~25%之间时，可有效发挥其填充效应和形态效应，提高UHPC的拌合物性能，且对抗压强度影响不大。
（4）在JZ#2的基础上，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。
（5）在保障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。
参考文献
[1] RICHARD P,CHEYREZY M.Composition of reactive powder concrete[J].Cement and Concrete Research,1995,25(7):1501-1511.
[2] 王晖.超高性能混凝土(UHPC)研究综述[J].混凝土与水泥制品,2022(4):25-28.
[3] 张云升,张文华,陈振宇.综论超高性能混凝土:设计制备·微观结构·力学与耐久性·工程应用[J].材料导报,2017,31(23):1-16.
[4] 陈宝春,李聪,黄伟,等.超高性能混凝土收缩综述[J].交通运输工程学报,2018,18(1):13-28.
[5] 丁沙,张国志,游新鹏,等.经济型UHPC的制备及性能研究[J].混凝土,2016(2):131-133.
[6] 夏京亮,王晶,冷发光.低碳混凝土发展路径和混凝土碳排放计算[J].新型建筑材料,2023,50(11):24-26,85.
[7] WANG X P,YU R,SONG Q L,et al.Optimized design of ultra -high performance concrete (UHPC) with a high wetpacking density [J].Cement and Concrete Research,2019,126:105921.
[8] 张高展,魏琦,丁庆军,等.超高性能混凝土配合比设计模型、水化硬化机理及微观结构的研究进展[J].混凝土与水泥制品,2020(1):6-10.
[9] 李新星,李水生.粉煤灰和石英粉对超高性能混凝土性能的影响[J].混凝土与水泥制品,2023(12):11-16.
[10] SHI C J,WANG D H,WU L M,et al.The hydration and microstructure of ultra high-strength concrete with cement-silica fume-slag binder [J].Cement and Concrete Composites,2015,61:44-52.
[11] 宋天威,左彦峰,姚越.原材料对超高性能混凝土性能的影响研究综述[J].混凝土世界,2024(2):71-81.
[12] 黄伟.矿物掺合料对超高性能混凝土的水化及微结构形成的影响[D].南京:东南大学,2017.
[13] 骆静静,田寅,张立力,等.纤维种类对超高性能混凝土电杆性能的影响研究[J].混凝土与水泥制品,2022(1):38-40.
[14] 蔡雨亭,王舜,戴胡蝶,等.混凝土复合材料碳排放因子测算方法研究[J].建筑技术,2024,55(9):1122-1125.
[15] 高育欣,王军,徐芬莲,等.预拌混凝土绿色生产碳排放评估[J].混凝土,2011(1):110-112.
引用本文
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).
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