碱激发材料性能的多目标平衡设计与优化研究

Multi-objective balanced design and optimization study on the performance of alkali-activated materials

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关键词:

碱激发材料;矿渣;硼酸;凝结时间;抗折强度;抗压强度;弹性模量;配合比优化

Key words:

Alkali-activated material; Slag; Boric acid; Setting time; Flexural strength; Compressive strength; Elastic modulus; Optimization of mix proportion

刊期:

2026年第1期

DOI:

10.19761/j.1000-4637.24100551

文章编号:

基金项目:

湖南省电力有限公司科技项目(5216A2240007)。

作者:

姚震宇1,甘 星1,邱立珊2,王诗怡3,*,唐 卓3,汪 毅3

单位:

1.国网湖南省电力有限公司,湖南 长沙410004; 2.国网湖南省电力有限公司经济技术研究院,湖南 长沙 410004; 3.中南大学 土木工程学院,湖南 长沙 410075

摘要

摘   要:研究了矿渣掺量(45%、50%、55%)、硼酸掺量(0、1%、2%、3%)对碱激发材料凝结时间、工作性、抗折强度、抗压强度和弹性模量的影响,并基于多目标平衡设计方法优化了碱激发材料的配合比。结果表明:随着硼酸掺量的增加,碱激发材料的初、终凝时间延长,流动度提升,抗折强度、抗压强度和弹性模量均降低;随着矿渣掺量的增加,碱激发材料的初、终凝时间缩短,流动度降低,抗折强度、抗压强度和弹性模量均提高;通过多目标平衡设计方法构建的优化模型可实现碱激发材料的力学与施工性能的协同调控,同时满足抗压强度、抗折强度、凝结时间等指标的要求。

Abstract: The effects of slag content (45%, 50%, 55%) and boric acid content (0, 1%, 2%, 3%) on the setting time, workability, flexural strength, compressive strength, and elastic modulus of alkali-activated materials were investigated. The mix proportions of alkali-activated materials were optimized based on a multi-objective balanced design method. The results show that increasing the boric acid content prolongs the initial and final setting times, improves fluidity and reduces the flexural strength, compressive strength and elastic modulus. As the slag content increases, the initial and final setting times of the alkali-activated material shorten, fluidity decreases, flexural strength, compressive strength and elastic modulus all increase. The optimized model constructed based on the multi-objective balanced design method enables the mechanical properties and workability of the alkali-activated material to be regulated synergistically, thus simultaneously meeting requirements of compressive strength, flexural strength, and setting time.

结论

(1)随着硼酸掺量的增加,碱激发材料的初、终凝时间延长,流动性提升,抗折强度、抗压强度和弹性模量均降低;随着矿渣掺量的增加,碱激发材料的初、终凝时间缩短,流动性降低,抗折强度、抗压强度和弹性模量均提高。
(2)通过多目标平衡设计方法,可实现矿渣掺量与硼酸掺量配合比的调控,有效协调碱激发材料的力学性能与施工性能。所构建的平衡设计模型可同时满足抗压强度、抗折强度、凝结时间等指标要求,为碱激发材料在实际工程中的高效应用提供可靠方案。

参考文献

[1] MOHAMMED I,MOHAMMED M.An overview of factors influencing the properties of alkali-activated binders[J].Journal of Cleaner Production,2021,286(3):124972.
[2] MUGAHED A,SOLOMON D,TOGAY O.Fly ash-based eco-friendly geopolymer concrete: A critical review of the long-term durability properties[J].Construction and Building Materials,2021,270(2):121857.
[3] DING Y,DAI J G,SHI C J.Mechanical properties of alkali-activated concrete: A state-of-the-art review[J].Construction and Building Materials,2016,127(11):68-79.
[4] FARHAN K Z,JOHARI M A M,DEMIRBOGA R.Assessment of important parameters involved in the synthesis of geopolymer composites: A review[J].Construction and Building Materials,2020,264(12):120276.
[5] 姜乐乐,姜福香,王富羚,等.碱激发胶凝材料用于CFRP加固混凝土结构研究进展[J].青岛理工大学学报,2022,43(3):74-82.
[6] WU Y G,LU B W,BAI T,et al.Geopolymer, green alkali activated cementitious material: Synthesis, applications and challenges[J].Construction and Building Materials,2019,224(11):930-949.
[7] LI N,SHI C J,WANG Q,et al.Composition design and performance of alkali-activated cements[J].Materials and Structures,2017,50(3):178.
[8] 仲小凡,王爱国,于乐乐,等.缓凝剂对碱激发胶凝材料凝结时间及流变性能影响的研究进展[J].材料导报,2024,38(19):35-43.
[9] 谢建和,李丽明,黄俊健,等.缓凝剂对碱激发材料性能影响的研究进展[J].建筑科学与工程学报,2023,40(5):20-31.
[10] 谭永山,余红发,姚祥,等.无缓凝剂磷酸镁修补砂浆的力学性能实验研究[J].南京航空航天大学学报,2018,50(1):138-144.

[11] 姚运.外加剂对碱激发粉煤灰材料性能的影响研究[J].粉煤灰综合利用,2018,32(3):15-17,21.
[12] 中华人民共和国国家质量监督检验检验总局,中国国家标准化管理委员会.水泥胶砂流动度测定方法:GB/T 2419—2005[S].北京:中国标准出版社,2005.
[13] 国家市场监督管理总局,国家标准化管理委员会.水泥标准稠度用水量、凝结时间与安定性检验方法:GB/T 1346—2024[S].北京:中国标准出版社,2024.
[14] 国家市场监督管理总局,国家标准化管理委员会.水泥胶砂强度检验方法(ISO法):GB/T 17671—2021[S].北京:中国标准出版社,2021.
[15] 中华人民共和国住房和城乡建设部,国家市场监督管理总局.混凝土物理力学性能试验方法标准:GB/T 50081—2019[S].北京:中国建筑工业出版社,2019.
[16] ALSALMAN A,DANG C N,PRINZ G S,et al.Evaluation of modulus of elasticity of ultra-high performance concrete[J].Construction and Building Materials,2017,153(10):918-928.

引用本文

姚震宇,甘星,邱立珊,等.碱激发材料性能的多目标平衡设计与优化研究[J].混凝土与水泥制品,2026(1):49-53,63.

YAO Zhenyu, GAN Xing, QIU Lishan,et al.Multi-objective balanced design and optimization study on the performance of alkali-activated materials[J].China Concrete and Cement Products,2026(1):49-53,63.


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