基于核磁共振法的纳米TiO2混凝土抗冻性能研究

摘要/Abstract

摘要： 孔结构演化对混凝土抗冻性能至关重要,为研究纳米TiO₂对混凝土孔结构及抗冻性能的影响,本文选取替代率分别为0%、1%、3%、5%(质量分数,下同)的纳米TiO₂混凝土为研究对象,进行了快冻法试验、抗压强度试验、核磁共振试验及扫描电子显微镜试验。通过纳米TiO₂混凝土冻融循环前后质量、动弹模量、抗压强度、孔结构及微观形貌的变化,评估-18~5 ℃条件下的冻融损伤并分析纳米TiO₂对混凝土性能的改善机理;同时建立抗压强度、相对动弹模量、自由水饱和度及裂缝占比响应模型以确定纳米TiO₂的最佳掺量。结果表明:适量的纳米TiO₂可有效改善混凝土微观形貌,增加混凝土微孔及中孔的比例,减小大孔及裂缝的比例,过量的纳米TiO₂会使混凝土中大孔和裂缝的比例增大,不利于混凝土抗冻性能的提高;纳米TiO₂掺量为1%时,混凝土抗冻性能最佳。基于抗冻性能指标与孔隙测试结果建立响应模型,确定纳米TiO₂最佳掺量接近1%,这与试验结果相符合。

关键词: 纳米TiO₂, 混凝土, 抗冻性能, 核磁共振, 孔结构, 响应面分析

Abstract: The evolution of pore structure is very important to the frost resistance of concrete. In order to study the effect of nano-TiO₂ on pore structure and frost resistance of concrete, the nano-TiO₂ concrete with substitution rates of 0%, 1%, 3%, 5% (mass fraction, the same below) were selected as research object, and the quick freezing test, compressive strength test, nuclear magnetic resonance test and scanning electron microscope test were carried out. The changes of mass, dynamic elastic modulus, compressive strength, pore structure and micro-morphology of nano-TiO₂ concrete before and after freeze-thaw cycle were analyzed to evaluate the freeze-thaw damage at -18~5 ℃ and to analyze the improvement mechanism of nano-TiO₂ on concrete properties. At the same time, the response models of compressive strength, relative dynamic modulus, free water saturation and crack ratio were established to determine the optimum content of nano-TiO₂. The results show that an appropriate content of nano-TiO₂ effectively improves the micro-morphology of concrete, increases the proportion of micropores and medium pores of concrete, and reduces the proportion of macropores and cracks, while excessive nano-TiO₂ increases the proportion of macropores and cracks in concrete, which is not conducive to the improvement of frost resistance of concrete. When the content of nano-TiO₂ is 1%, the frost resistance of concrete is the best. Based on the frost resistance performance index and pore test results, the response model is established, and the optimal content of nano-TiO₂ is close to 1%, which is consistent with the test results.

Key words: nano-TiO₂, concrete, frost resistance, nuclear magnetic resonance, pore structure, response surface analysis

中图分类号:

TU528

赵燕茹, 张建新, 李娜, 关鹤. 基于核磁共振法的纳米TiO₂混凝土抗冻性能研究[J]. 硅酸盐通报, 2023, 42(6): 2015-2026.

ZHAO Yanru, ZHANG Jianxin, LI Na, GUAN He. Frost Resistance of Nano-TiO₂ Concrete Based on Nuclear Magnetic Resonance Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(6): 2015-2026.

参考文献

[1] 孙科科, 彭小芹, 冉鹏, 等. 地聚合物混凝土抗冻性影响因素[J]. 材料导报, 2021, 35(24): 24095-24100+24106.
SUN K K, PENG X Q, RAN P, et al. The influence factor of the anti-freeze of geopolymer concrete[J]. Materials Reports, 2021, 35(24): 24095-24100+24106 (in Chinese).
[2] 高矗, 孔祥振, 申向东. 基于GM(1,1)的应力损伤轻骨料混凝土抗冻性评估[J]. 工程科学与技术, 2021, 53(4): 184-190.
GAO C, KONG X Z, SHEN X D. Freeze-thaw resistance evaluation of lightweight aggregate concrete with stress damage based on GM(1,1)[J]. Advanced Engineering Sciences, 2021, 53(4): 184-190 (in Chinese).
[3] HOU P K, KAWASHIMA S, KONG D Y, et al. Modification effects of colloidal nano SiO₂ on cement hydration and its gel property[J]. Composites Part B: Engineering, 2013, 45(1): 440-448.
[4] HEIKAL M. Characteristics, textural properties and fire resistance of cement pastes containing Fe₂O₃ nano-particles[J]. Journal of Thermal Analysis and Calorimetry, 2016, 126(3): 1077-1087.
[5] LUO J L, HOU D S, LI Q Y, et al. Comprehensive performances of carbon nanotube reinforced foam concrete with tetraethyl orthosilicate impregnation[J]. Construction and Building Materials, 2017, 131: 512-516.
[6] YING J W, ZHOU B, XIAO J Z. Pore structure and chloride diffusivity of recycled aggregate concrete with nano-SiO₂ and nano-TiO₂[J]. Construction and Building Materials, 2017, 150: 49-55.
[7] MA B G, LI H N, MEI J P, et al. Effects of nano-TiO₂ on the toughness and durability of cement-based material[J]. Advances in Materials Science and Engineering, 2015, 2015: 1-10.
[8] JIANG J H, DONG X B, WANG H, et al. Enhanced mechanical and photocatalytic performance of cement mortar reinforced by nano-TiO₂ hydrosol-coated sand[J]. Cement and Concrete Composites, 2023, 137: 104906.
[9] STAUB DE MELO J V, TRICHÊ S G. Study of the influence of nano-TiO₂ on the properties of Portland cement concrete for application on road surfaces[J]. Road Materials and Pavement Design, 2018, 19(5): 1011-1026.
[10] SALEMI N, BEHFARNIA K, ZAREE S A. Effect of nanoparticles on frost durability of concrete[J]. Asian Journal of Civil Engineering(BHRC) 2014, 15(3): 411-420
[11] LIU L, HE Z, CAI X H, et al. Application of low-field NMR to the pore structure of concrete[J]. Applied Magnetic Resonance, 2021, 52(1): 15-31.
[12] LI Z, HAN B G, YU X, et al. Comparison of the mechanical property and microstructures of cementitious composites with nano- and micro-rutile phase TiO₂[J]. Archives of Civil and Mechanical Engineering, 2019, 19(3): 615-626.
[13] 黄志超, 肖锐, 刘帅红, 等. 预加热对TA1钛合金自冲铆接性能的影响[J]. 锻压技术, 2020, 45(6): 80-85.
HUANG Z C, XIAO R, LIU S H, et al. Influence of preheating on properties of self-piercing riveting for TA1 titanium alloy[J]. Forging & Stamping Technology, 2020, 45(6): 80-85 (in Chinese).
[14] 中华人民共和国住房和城乡建设部. 普通混凝土长期性能和耐久性能试验方法标准: GB/T 50082—2009[S]. 北京: 中国建筑工业出版社, 2009.
Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Standard test method for long-term performance and durability of ordinary concrete: GB/T 50082—2009[S]. Beijing: China Construction Industry Press, 2009 (in Chinese).
[15] 中华人民共和国建设部, 国家质量监督检验检疫总局. 混凝土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.
Ministry of Construction of the People’s Republic of China, State General Administration of Quality Supervision, Inspection and Quarantine. Standard for test method of physical and mechanical properties of concrete: GB/T 50081—2019[S]. Beijing: China Construction Industry Press, 2019 (in Chinese).
[16] TIAN H H, WEI C F, WEI H Z, et al. Freezing and thawing characteristics of frozen soils: bound water content and hysteresis phenomenon[J]. Cold Regions Science and Technology, 2014, 103: 74-81.
[17] BAYER J V, JAEGER F, SCHAUMANN G E. Proton nuclear magnetic resonance (NMR) relaxometry in soil science applications [J]. The Open Magnetic Resonance Journal, 2010, 3(2): 15-26.
[18] 薛慧君, 申向东, 邹春霞, 等. 基于NMR的风积沙混凝土冻融孔隙演变研究[J]. 建筑材料学报, 2019, 22(2): 199-205.
XUE H J, SHEN X D, ZOU C X, et al. Freeze-thaw pore evolution of aeolian sand concrete based on nuclear magnetic resonance[J]. Journal of Building Materials, 2019, 22(2): 199-205 (in Chinese).
[19] 潘卓, 周凯, 高锐, 等. 基于NMR的寒区冻融风化循环下砂岩孔隙演化研究[J]. 地球流体, 2020, 2020(10): 1-12.
PAN Z, ZHOU K, GAO R, et al. Research on the pore evolution of sandstone in cold regions under freeze-thaw weathering cycles based on NMR[J]. Geofluids, 2020, 2020(10): 1-12 (in Chinese).
[20] MUHD NORHASRI M S, HAMIDAH M S, FADZIL A M. Applications of using nano material in concrete: a review[J]. Construction and Building Materials, 2017, 133: 91-97.
[21] DENG X H, GAO X Y, WANG R, et al. Investigation of microstructural damage in air-entrained recycled concrete under a freeze-thaw environment[J]. Construction and Building Materials, 2021, 268: 121219.
[22] 薛维培, 刘晓媛, 姚直书, 等. 不同损伤源对玄武岩纤维增强混凝土孔隙结构变化特征的影响[J]. 复合材料学报, 2020, 37(9): 2285-2293.
XUE W P, LIU X Y, YAO Z S, et al. Effects of different damage sources on pore structure change characteristics of basalt fiber reinforced concrete[J]. Acta Materiae Compositae Sinica, 2020, 37(9): 2285-2293 (in Chinese).
[23] SHAHRUL S, MOHAMMED B S, WAHAB M M A, et al. Mechanical properties of crumb rubber mortar containing nano-silica using response surface methodology[J]. Materials, 2021, 14(19): 5496.
[24] MOHAMMED B S, ADAMU M. Mechanical performance of roller compacted concrete pavement containing crumb rubber and nano silica[J]. Construction and Building Materials, 2018, 159: 234-251.
[25] 洪旗, 史耀耀, 路丹妮, 等. 基于灰色关联分析和响应面法的复合材料缠绕成型多目标工艺参数优化[J]. 复合材料学报, 2019, 36(12): 2822-2832.
HONG Q, SHI Y Y, LU D N, et al. Multi-response parameter optimization for the composite tape winding process based on grey relational analysis and response surface methodology[J]. Acta Materiae Compositae Sinica, 2019, 36(12): 2822-2832 (in Chinese).
[26] PATHAK S S, VESMAWALA G R. Effect of nano TiO₂ on mechanical properties and microstructure of concrete[J]. Materials Today: Proceedings, 2022, 65: 1915-1921.
[27] WANG R J, HU Z Y, LI Y, et al. Review on the deterioration and approaches to enhance the durability of concrete in the freeze-thaw environment[J]. Construction and Building Materials, 2022, 321: 126371.
[28] ABDALLA J A, THOMAS B S, HAWILEH R A, et al. Influence of nano-TiO₂, nano-Fe₂O₃, nano clay and nano-CaCO₃ on the properties of cement/geopolymer concrete[J]. Cleaner Materials, 2022, 4: 100061.

基于核磁共振法的纳米TiO₂混凝土抗冻性能研究

Frost Resistance of Nano-TiO₂ Concrete Based on Nuclear Magnetic Resonance Method

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