NaOH溶液浓度对FA-GBFS基地质聚合物力学性能及微观结构的影响
Influence of NaOH solution concentration on the mechanical properties and microstructure of FA-GBFS based geopolymer
关键词：
地质聚合物；NaOH溶液；浓度；力学性能；微观结构
Key words：
Geopolymer; NaOH solution; Concentration; Mechanical property; Microstructure
刊期：
2026年第1期
DOI：
10.19761/j.1000-4637.24070360
文章编号：
基金项目：
国家自然科学基金资助项目（52171270、51879168、52101313）；国家自然科学基金委-河南省联合基金项目（U23A20672）；黄河水科学研究联合基金项目（U2243223）。
作者：
邵浩栋1，范向前2，*，王 涛2，赵新铭1
单位：
1.南京航空航天大学 民航学院，江苏 南京 211106；2.南京水利科学研究院 水灾害防御 全国重点实验室，江苏 南京 210029
摘要
摘 要：研究了NaOH溶液浓度（10、12、14、16 mol/L）对粉煤灰-高炉矿渣（Fly ash-granulated blast furnace slag，FA-GBFS）基地质聚合物力学性能的影响，并基于热重（TG-DTG）与压汞试验（MIP）分析了宏观力学性能与微观结构演化的关联。结果表明：随着NaOH溶液浓度的增加，试件的抗折、抗压强度均增加，抗折、抗压强度增长率基本呈先增后减的趋势，试件全温度区间内（24~1 000 ℃）的质量损失率增加，力学性能随质量损失率的增加而增加，强度增长因子降低，强度增长速率减缓，但保持正向增长；当面对质量的微小变化时，抗折强度的敏感性更高；随着NaOH溶液浓度的增加，试件的孔隙率降低，孔隙结构得到优化；随着NaOH溶液浓度的增加，试件的力学性能随孔隙率的增加而降低，强度增长因子的绝对值减小，强度对孔隙率的敏感度下降。
Abstract: The effect of NaOH solution concentration (10, 12, 14, 16 mol/L) on the mechanical properties of fly ash- granulated blast furnace slag (FA-GBFS) based geopolymer was studied, and the correlation between macroscopic mechanical properties and microstructure evolution was analyzed based on thermogravimetric (TG-DTG) and mercury intrusion test (MIP). The results show that with the increase of NaOH solution concentration, the flexural and compressive strength of the specimens increase, and the growth rate of flexural and compressive strength basically shows a trend of first increasing and then decreasing. The mass loss rate of the specimens increases throughout the entire temperature range (24~1 000 ℃), and the mechanical properties increase with the increase of mass loss rate. The strength growth factor decreases, and the strength growth rate slows down, but maintains a positive growth. When faced with small changes in mass, the sensitivity of flexural strength is higher. As the concentration of NaOH solution increases, the porosity of the specimen decreases and the pore structure is optimized. As the concentration of NaOH solution increases, the mechanical properties of the specimen decrease with the increase of porosity, the absolute value of the strength growth factor decreases, and the sensitivity of strength to porosity decreases.
结论
（1）随着NaOH溶液浓度的增加，试件的抗折、抗压强度均增加，抗折、抗压强度增长率基本呈先增后减的趋势。当NaOH浓度由10 mol/L增至12 mol/L时，抗折、抗压强度增长率均达到最大。
（2）FA-GBFS基地质聚合物的热稳定性良好。随着NaOH溶液浓度的增加，样品全温度区间内（24~1 000 ℃）的质量损失率增加，试件的力学性能随质量损失率的增加而增加，强度增长因子降低，强度增长速率减缓，但保持正向增长。当面对质量的微小变化时，抗折强度的敏感性更高。
（3）随着NaOH溶液浓度的增加，增加了凝胶类产物的生成量与生成速率，凝胶类产物迅速填充在内部孔隙中，优化了试件的孔隙结构，降低了孔隙率。随着NaOH溶液浓度的增加，试件的力学性能随孔隙率的增加而降低，强度增长因子的绝对值减小，强度对于孔隙率的敏感度下降。
参考文献
[1] 王亚民,胡少伟,范向前,等.铝酸盐水泥对粉煤灰基地聚合物性能影响探究[J].水利水运工程学报,2022(1):89-96.
[2] 柴倩,康乐,陈柳霖,等.循环流化床炉渣基地质聚合物的制备及性能研究[J].混凝土与水泥制品,2025(1):116-119.
[3] 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.
[4] 阚黎黎,段贝贝,闫涛.高延性纤维增强偏高岭土-粉煤灰基地聚合物在不同环境下的自愈合性能[J].复合材料学报,2018,35(10):2841-2850.
[5] BAGCI C,KUTYLA G P,KRIVEN W M.Fully reacted high strength geopolymer made with diatomite as a fumed silica alternative[J].Ceramics International,2017,43(17):14784-14790.
[6] USMAN K M,BALOO L,DANLAMI N,et al.Microstructural analysis and compressive strength of fly ash and petroleum sludge ash geopolymer mortar under high temperatures[J].Sustainability,2023,15(12):9846.
[7] 张长森,朱宝贵,李杨,等.镍渣/偏高岭土基地聚合物的制备与表征[J].材料导报,2017,31(23):193-197.
[8] 耿飞,桂敬能,曹欣欣,等.脱硫石膏基复合胶凝材料的物理力学性能试验[J].南京航空航天大学学报,2019,51(1):124-130.
[9] DASSEKPO J B M,FENG W,MIAO L,et al.Effect of alkali activators on loess geopolymer: Potential waterproof repair material[J].Journal of Materials in Civil Engineering,2021,33(9):04021247.
[10] 宋学锋,朱娟娟,邓倩倩.粉煤灰-矿渣基矿物聚物的强度影响因素及机理分析[J].硅酸盐通报,2016,35(3):943-947.
[11] QIU J P,ZHAO Y L,XING J,et al.Fly ash/blast furnace slag-based geopolymer as a potential binder for mine backfilling: Effect of binder type and activator concentration[J].Advances in Materials Science and Engineering,2019,19:1-12.
[12] KOMNITSAS K,ZAHARAKI D,PERDIKATSIS V.Effect of synthesis parameters on the compressive strength of low-calcium ferronickel slag inorganic polymers[J].Journal of Hazardous Materials,2009,161(2-3):760-768.
[13] 彭晖,崔潮,蔡春声,等.激发剂浓度对偏高岭土基地聚物性能的影响机制[J].复合材料学报,2016,33(12):2952-2960.
[14] 陈晨,程婷,贡伟亮,等.粉煤灰地聚物反应体系下的反应动力学研究[J].硅酸盐通报,2016,35(9):2717-2723.
[15] 杨涛,姚晓,张祖华,等.NaOH溶液浓度及反应时间对偏高岭土地质聚合反应的影响[J].南京工业大学学报(自然科学版),2013,35(4):21-25.
[16] LUNA G Y,FERN?魣NDEZ P C,P?魪REZ C M,et al.Influence of BFS content in the mechanical properties and acid attack resistance of fly ash based geopolymers[J].Key Engineering Materials,2016,663:50-61.
[17] SATHONSAOWAPHAK A,CHINDAPRASIRT P,PIMRAKSA K.Workability and strength of lignite bottom ash geopolymer mortar[J].Journal of Hazardous Materials,2009,168(1):44-50.
[18] 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.
[19] ZHUANG X Y,CHEN L,KOMARNENI S,et al.Fly ash-based geopolymer: clean production, properties and applications[J].Journal of Cleaner Production,2016,125:253-267.
[20] LI X Y,ZHAO Y F,HU Y L,et al.Influence of multiple factors on the workability and early strength development of alkali-activated fly ash and slag-based geopolymer-stabilized soil[J].Materials,2022,15(7):2682.
[21] 刘继中,赵庆新,张津瑞,等.碱渣-矿渣复合胶凝材料硬化体的微观结构与组成[J].建筑材料学报,2019,22(6):872-877.
[22] 孙双月.室温条件制备矿渣——粉煤灰基地聚合物的试验和反应机理研究[J].金属矿山,2023(2):247-253.
[23] 杨敬斌,方媛,李东旭.碱胶凝材料水化产物C-A-S-H与N-A-S-H的研究进展[J].硅酸盐通报,2017,36(10):3292-3297,3310.
[24] KRIVENKO P,GARCIA-LODEIRO I,KAVALEROVA E,et al.A review on alkaline activation: new analytical perspectives[J].Materiales de Construcción,2014,64(315):140-159.
[25] LI F P,LIU L S,YANG Z M,et al.Physical and mechanical properties and micro characteristics of fly ash-based geopolymer paste incorporated with waste granulated blast furnace slag (GBFS) and functionalized multi-walled carbon nanotubes (MWCNTS)[J].Journal of Hazardous Materials,2021,401:123339.
[26] BEHERA P,BAHETI V,MILITKY J,et al.Microstructure and mechanical properties of carbon microfiber reinforced geopolymers at elevated temperatures[J].Construction and Building Materials,2018,160:733-743.
[27] ALMEIDA F C R,KLENN A J.Efficiency of internal curing by superabsorbent polymers (SAP) in PC-GGBS mortars[J].Cement and Concrete Composites,2018,88:41-51.
[28] NG C,ALENGARAM U J,WONG L S,et al.A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete[J].Construction and Building Materials,2018,186:550-576.
[29] NAN J Y,CHANG D,LIU J K,et al.Investigation on the microstructural characteristics of lime-stabilized soil after freeze-thaw cycles[J].Transportation Geotechnics,2024,44:101175.
引用本文
邵浩栋,范向前,王涛,等.NaOH溶液浓度对FA-GBFS基地质聚合物力学性能及微观结构的影响[J].混凝土与水泥制品,2026(1):54-60.
SHAO H D,FAN X Q,WANG T,et al.Influence of NaOH solution concentration on the mechanical properties and microstructure of FA-GBFS based geopolymer[J].China Concrete and Cement Products,2026(1):54-60.
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