纳米C-S-H晶核早强剂对水泥早期水化的影响

doi:10.16552/j.cnki.issn1001-1625.2024.0788

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (1): 21-30.DOI: 10.16552/j.cnki.issn1001-1625.2024.0788

纳米C-S-H晶核早强剂对水泥早期水化的影响

张金龙^1,2, 唐孟雄², 衷从浩¹, 胡家兵¹, 邵强¹, 钟开红¹

1.广州市建筑科学研究院集团有限公司,广州 510440;
2.广州建筑股份有限公司,广州 510030

收稿日期:2024-07-08 修订日期:2024-09-26 出版日期:2025-01-15 发布日期:2025-01-23
通信作者: 唐孟雄,博士,教授级高级工程师。E-mail:tmx@gibs.com.cn钟开红,教授级高级工程师。E-mail:42325231@qq.com
作者简介:张金龙(1989—),男,博士,教授级高级工程师。主要从事高性能混凝土外加剂的研究。E-mail:zhangjl117@126.com
基金资助:
国家自然科学基金(52341801,52378332);广东省住房和城乡建设厅科技创新计划项目(2021-K25-284959,2022-K25-212467);广州市建筑集团有限公司科技计划项目(〔2021〕-KJ015,〔2023〕-KJ020);广州市建筑科学研究院集团有限公司科技计划项目(2022Y-KJ03,2023Y-KJ03)

Effect of Nano-C-S-H Seeds Early-Strength Agent on Early Hydration of Cement

ZHANG Jinlong^1,2, TANG Mengxiong², ZHONG Conghao¹, HU Jiabing¹, SHAO Qiang¹, ZHONG Kaihong¹

1. Guangzhou Institute of Building Science Group Co., Ltd., Guangzhou 510440, China;
2. Guangzhou Municipal Construction Group Co., Ltd., Guangzhou 510030, China

Received:2024-07-08 Revised:2024-09-26 Published:2025-01-15 Online:2025-01-23

摘要/Abstract

摘要： 探究纳米水化硅酸钙(C-S-H)晶核早强剂对水泥早期水化的影响机理有助于推动纳米C-S-H晶核早强剂在实际工程中的应用。本文首先通过共沉淀法合成了尺寸均匀分布的纳米C-S-H晶核早强剂,借助力学性能、水化热测试对比分析了所合成纳米C-S-H掺量变化的作用规律及其与常用早强剂的效果差异,并通过XRD、TG-DTG、SEM测试分析了纳米C-S-H对水泥水化历程的影响。结果表明:随着所合成纳米C-S-H晶核早强剂掺量的增加,混凝土1 d抗压强度、水化放热速率及水化放热量的提升幅度先增加后减小,在纳米C-S-H掺量为0.6%(质量分数)时,早强剂的早强效果最佳,且对7、28 d抗压强度无负面影响;相比空白组,纳米C-S-H的加入显著提升了水泥诱导期的水化速率,以及1 d龄期内AFm、AFt及C-S-H凝胶的生成量和密集程度,但对中后期龄期水化产物的生成无明显促进作用。

关键词: 纳米C-S-H晶核早强剂, 成核位点, 抗压强度, 水化热, 水化产物, 微观形貌

Abstract: Investigating the impact mechanisms of nano-C-S-H seeds early-strength agent on the early hydration of cement is pivotal for advancing their application in practical engineering. By comparing mechanical properties and hydration heat tests, the effect of varying content of synthesized nano-C-S-H and the differences in effects compared to commonly early-strength agents were analyzed. Additionally, XRD, TG-DTG and SEM were employed to elucidate the effect of nano-C-S-H on the cement hydration process. The results demonstrate that increasing the content of the synthesized nano-C-S-H seeds early-strength agent leads to an initial rise in 1 d compressive strength, hydration heat release rate, and total hydration heat, followed by a decline. The optimal early-strength effect is observed at content of 0.6% by mass of the cementitious materials. When the content of nano-C-S-H is 0.6%, the nano-C-S-H seeds early-strength agent has the best early-strength effect and has no negative effect on the compressive strength at 7 and 28 d. Compared to the blank group, the addition of nano-C-S-H significantly enhances the hydration rate during the cement induction period, as well as the formation and density of AFm, AFt and C-S-H gels during the 1 d age, but has no significant effect on the formation of hydration products at the middle and late ages.

Key words: nano-C-S-H seeds early-strength agent, nucleation site, compressive strength, hydration heat, hydration product, microstructure morphology

中图分类号:

TU528

张金龙, 唐孟雄, 衷从浩, 胡家兵, 邵强, 钟开红. 纳米C-S-H晶核早强剂对水泥早期水化的影响[J]. 硅酸盐通报, 2025, 44(1): 21-30.

ZHANG Jinlong, TANG Mengxiong, ZHONG Conghao, HU Jiabing, SHAO Qiang, ZHONG Kaihong. Effect of Nano-C-S-H Seeds Early-Strength Agent on Early Hydration of Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(1): 21-30.

参考文献

[1] FLATT R J, ROUSSEL N, CHEESEMAN C R. Concrete: an eco material that needs to be improved[J]. Journal of the European Ceramic Society, 2012, 32(11): 2787-2798.
[2] BA M F, QIAN C X, GUO X J, et al. Effects of steam curing on strength and porous structure of concrete with low water/binder ratio[J]. Construction and Building Materials, 2011, 25(1): 123-128.
[3] LIU B J, SHI J Y, ZHOU F, et al. Effects of steam curing regimes on the capillary water absorption of concrete: prediction using multivariable regression models[J]. Construction and Building Materials, 2020, 256: 119426.
[4] 张丰, 白银, 蔡跃波, 等. 混凝土低温早强剂研究现状[J]. 材料导报, 2017, 31(21): 106-113.
ZHANG F, BAI Y, CAI Y B, et al. Research status of low temperature early strength agents for concrete[J]. Materials Review, 2017, 31(21): 106-113 (in Chinese).
[5] 张路, 杨正宏, 曲生华. 硫酸钠对水泥硬化性能的影响[J]. 新型建筑材料, 2014, 41(2): 28-30+56.
ZHANG L, YANG Z H, QU S H. Influence of Na₂SO₄ on hardening properties of cement[J]. New Building Materials, 2014, 41(2): 28-30+56 (in Chinese).
[6] MEHDIPOUR I, KUMAR A, KHAYAT K H. Rheology, hydration, and strength evolution of interground limestone cement containing PCE dispersant and high volume supplementary cementitious materials[J]. Materials & Design, 2017, 127: 54-66.
[7] PAN Z, HE L, QIU L, et al. Mechanical properties and microstructure of a graphene oxide-cement composite[J]. Cement and Concrete Composites, 2015, 58: 140-147.
[8] LAND G, STEPHAN D. The influence of nano-silica on the hydration of ordinary Portland cement[J]. Journal of Materials Science, 2012, 47(2): 1011-1017.
[9] LAND G, STEPHAN D. The effect of synthesis conditions on the efficiency of C-S-H seeds to accelerate cement hydration[J]. Cement and Concrete Composites, 2018, 87: 73-78.
[10] 施宇磊. 纳米C-S-H-PCE对水泥早期水化及其微结构演变研究[D]. 扬州: 扬州大学, 2022.
SHI Y L. Effect of nano C-S-H-PCE on early hydration of cement and microstructure evolution[D]. Yangzhou: Yangzhou University, 2022 (in Chinese).
[11] JOHN E, EPPING J D, STEPHAN D. The influence of the chemical and physical properties of C-S-H seeds on their potential to accelerate cement hydration[J]. Construction and Building Materials, 2019, 228: 116723.
[12] WANG F, KONG X M, JIANG L F, et al. The acceleration mechanism of nano-C-S-H particles on OPC hydration[J]. Construction and Building Materials, 2020, 249: 118734.
[13] JOHN E, MATSCHEI T, STEPHAN D. Nucleation seeding with calcium silicate hydrate: a review[J]. Cement and Concrete Research, 2018, 113: 74-85.
[14] NICOLEAU L. Accelerated growth of calcium silicate hydrates: experiments and simulations[J]. Cement and Concrete Research, 2011, 41(12): 1339-1348.
[15] 王荣杰. 纳米C-S-H-PCE对水泥-矿物掺合料浆体水化及耐久性的影响[D]. 扬州: 扬州大学, 2023.
WANG R J. Effect of nano C-S-H-PCE on early hydration and durability of cement-mineral admixture paste[D]. Yangzhou: Yangzhou University, 2023 (in Chinese).
[16] LAND G, STEPHAN D. Controlling cement hydration with nanoparticles[J]. Cement and Concrete Composites, 2015, 57: 64-67.
[17] 张朝阳, 蔡熠, 孔祥明, 等. 纳米C-S-H对水泥水化、硬化浆体孔结构及混凝土强度的影响[J]. 硅酸盐学报, 2019, 47(5): 585-593.
ZHANG C Y, CAI Y, KONG X M, et al. Influence of nano C-S-H on cement hydration, pore structure of hardened cement pastes and strength of concrete[J]. Journal of the Chinese Ceramic Society, 2019, 47(5): 585-593 (in Chinese).
[18] 王伟山, 黄德祥, 邓最亮, 等. 新型晶核型早强剂的性能与早强机理分析[J]. 新型建筑材料, 2016, 43(5): 9-13.
WANG W S, HUANG D X, DENG Z L, et al. Performance and mechanism analysis of new type of crystal nucleus based hardening accelerator[J]. New Building Materials, 2016, 43(5): 9-13 (in Chinese).
[19] OWENS K, RUSSELL M I, DONNELLY G, et al. Use of nanocrystal seeding chemical admixture in improving Portland cement strength development: application for precast concrete industry[J]. Advances in Applied Ceramics, 2014, 113(8): 478-484.
[20] KANCHANASON V, PLANK J. Role of pH on the structure, composition and morphology of C-S-H-PCE nanocomposites and their effect on early strength development of Portland cement[J]. Cement and Concrete Research, 2017, 102: 90-98.
[21] SCHÖNLEIN M, PLANK J. A TEM study on the very early crystallization of C-S-H in the presence of polycarboxylate superplasticizers: transformation from initial C-S-H globules to nanofoils[J]. Cement and Concrete Research, 2018, 106: 33-39.
[22] 唐芮枫, 崔素萍, 王子明, 等. 钙硅摩尔比对纳米水化硅酸钙晶种早强作用的影响及机理[J]. 硅酸盐学报, 2022, 50(6): 1626-1633.
TANG R F, CUI S P, WANG Z M, et al. Effect of calcium-silicon molar ratio on early strength enhancement of nano-sized calcium silicate hydrate seeds[J]. Journal of the Chinese Ceramic Society, 2022, 50(6): 1626-1633 (in Chinese).
[23] 林荣永. 晶种型早强剂的制备及其性能的研究[D]. 广州: 华南理工大学, 2019.
LIN R Y. Study on preparation and properties of seed crystal based accelerator[D]. Guangzhou: South China University of Technology, 2019 (in Chinese).
[24] 王芳. 聚合物共沉淀法制备纳米C-S-H及其对水泥水化机理研究[D]. 北京: 中国矿业大学(北京), 2020.
WANG F. Preparation of nano-C-S-H by polymer coprecipitation and its effect on cement hydration mechanism[D]. Beijing: China University of Mining & Technology, Beijing, 2020 (in Chinese).

纳米C-S-H晶核早强剂对水泥早期水化的影响

Effect of Nano-C-S-H Seeds Early-Strength Agent on Early Hydration of Cement

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	冉秋硕, 徐泽辉, 齐文超, 刘磊. 高温后钢-玄武岩混杂纤维混凝土动态力学性能研究[J]. 硅酸盐通报, 2025, 44(1): 69-80.
[2]	耿春雷, 郭宏达, 董阳, 张栋, 巩思宇, 李俏. 陶粒泡沫混凝土成型方式及性能研究[J]. 硅酸盐通报, 2025, 44(1): 124-132.
[3]	薛璐韬, 李育彪, 吴晓勇, 李瑞, 孙旭超, 吴开振, 池汝安. 氟石膏水化活性改性试验研究[J]. 硅酸盐通报, 2025, 44(1): 223-230.
[4]	窦占双, 李晓民, 秦宏涛, 魏定邦, 武旭, 闫升, 张富强, 韩方元. 化学激发大掺量粉煤灰复合胶凝材料力学性能与水化机理研究[J]. 硅酸盐通报, 2025, 44(1): 243-252.
[5]	余芳, 李林柏, 姚大立. 钢纤维自密实再生混凝土的力学性能[J]. 硅酸盐通报, 2025, 44(1): 264-273.
[6]	李琪, 王亮, 王浩, 王成龙, 徐建, 胡伟. 碳化再生微粉对碱激发矿渣材料的影响[J]. 硅酸盐通报, 2025, 44(1): 289-296.
[7]	陈平, 李芳彬, 向玮衡, 胡成, 刘俊, 王启杰. 钙硅比对硅酸钙矿相烧结行为和固碳能力的影响[J]. 硅酸盐通报, 2025, 44(1): 297-304.
[8]	徐婕, 梁剑辉, 齐乐, 龚英, 高玉峰. 原料土液限对自密实固化土工程性质的影响[J]. 硅酸盐通报, 2025, 44(1): 360-367.
[9]	王亚丽, 赵馨宇, 蒙万友, 王梦璐, 张萌. 水泥浆拌和固化二氧化碳对水泥性能的影响[J]. 硅酸盐通报, 2024, 43(9): 3109-3117.
[10]	王萧萧, 董培森, 杨鑫瑞, 张菊, 闫长旺, 董宇飞. 低温作用下钢纤维地聚合物混凝土力学性能研究[J]. 硅酸盐通报, 2024, 43(9): 3203-3213.
[11]	刘亚炜, 胡阳, 罗琦, 鲁刘磊, 裴大田, 李斌斌, 马俊, 汪峻峰. 低温环境下硅灰对掺无碱速凝剂水泥砂浆抗压强度和抗渗性的影响[J]. 硅酸盐通报, 2024, 43(9): 3273-3281.
[12]	康雪儿, 黄赟, 刘刚, 何明皓, 万惠文. 可溶性磷对大掺量磷石膏胶凝材料水化过程的影响[J]. 硅酸盐通报, 2024, 43(9): 3303-3312.
[13]	孙开强, 刘琳, 郑蕻陈. 碱激发矿渣-粉煤灰胶凝材料力学性能影响因素分析[J]. 硅酸盐通报, 2024, 43(9): 3313-3319.
[14]	张进飞, 马麒, 穆松, 郭政, 庄志杰, 乔宏霞, 洪锦祥. 疏水性侵蚀抑制剂对水泥水化影响及作用机理分析[J]. 硅酸盐通报, 2024, 43(8): 2768-2777.
[15]	张书豪, 靳利安, 李宗奇, 申路, 崔圣爱. 盾构隧道用聚合物双液浆性能及水化机理研究[J]. 硅酸盐通报, 2024, 43(8): 2897-2904.