Effect of Portland Cement on Properties of Cement Adhesives Used in Large Tonnage Suspended Porcelain Insulators

doi:10.16552/j.cnki.issn1001-1625.2025.0565

Abstract

Abstract: Portland cement adhesives represent a significant component of porcelain insulators, wherein the differences in the characteristics of the cementitious materials exert a significant influence on the performance of cement adhesives. In this study, Portland cements from Japanese Onoda cement and three domestic Portland cements were selected to analyze cement characteristics, and the effects of four Portland cements on the fluidity, setting time, mechanical properties, pore characteristics and thermal-mechanical properties of cement adhesives were investigated. The results show that domestic Portland cement adhesives exhibit superior performance in comparison with Onoda cement adhesive. The content of tricalcium aluminate (C₃A) in Taini cement is relatively high and average particle size of Taini cement is the lowest. This results in the formation of a greater quantity of ettringite (AFt), which subsequently fill the pores in the early stage of hydration, 3 d compressive strength and flexural strength of Taini cement adhesive reach 105.4 and 18.5 MPa, respectively. However, the production of alumino-ferrite-mono (AFm) during the later stages of hydration results in a high dry shrinkage rate. The content of C₃A and gypsum in China resources cement is low, and more hydrated calcium silicate (C-S-H) gel and AFt are produce in the later stages of hydration, with the lowest porosity (6.67%) and dry shrinkage rate (0.040% at 11 d) of China resources cement adhesive. The average particle size of Conch cement is relatively large and tricalcium silicate content is the highest, which results in a relatively high later strength Conch cement adhesive. However, due to the transformation of AFt to AFm in the later stage of hydration, the dry shrinkage rate of Conch cement adhesive is relatively high. The thermal-mechanical properties of porcelain components bonded with domestic Portland cement adhesives have all been shown to exceed those of the Onoda cement adhesive, indicating that the domestic Portland cement has the capacity to replace Onoda cement in the production of ultra-high voltage large tonnage porcelain insulators.

Key words: ultra-high voltage, porcelain insulator, Portland cement, cement adhesive, pore characteristic, dry shrinkage rate

CLC Number:

TQ177.6⁺2

ZHOU Weibing, MA Mingzhuo, ZHOU Jun, ZHAO Jiangtao, ZHOU Yongxin. Effect of Portland Cement on Properties of Cement Adhesives Used in Large Tonnage Suspended Porcelain Insulators[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(12): 4301-4313.

References

[1] 袁志勇, 张学日, 李凯, 等. 高铝瓷组成、结构与力学性能随烧成温度的演变[J]. 硅酸盐通报, 2023, 42(9): 3315-3323.
YUAN Z Y, ZHANG X R, LI K, et al. Evolution of composition, structure and mechanical properties of high alumina porcelain with sintering temperature[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(9): 3315-3323 (in Chinese).
[2] MENG Y, GONG G H, WU Z P, et al. Fabrication and microstructure investigation of ultra-high-strength porcelain insulator[J]. Journal of the European Ceramic Society, 2012, 32(12): 3043-3049.
[3] CHAO Y, ZHANG L. Operation analysis of cap and pin suspension ceramic insulators with composite shed for DC transmission lines in China[C]. The 16th IET international conference on AC and DC power transmission (ACDC 2020). Online Conference, 2020: 858-863.
[4] 孙庆峰, 王磊, 付军, 等. 瓷绝缘子支撑平台端面不平引起的断裂研究[J]. 电瓷避雷器, 2023(3): 183-188.
SUN Q F, WANG L, FU J, et al. Fracture caused by uneven end face of porcelain insulator supporting platform[J]. Insulators and Surge Arresters, 2023(3): 183-188 (in Chinese).
[5] KIM K, MOON B, KIM D, et al. Mechanical property evaluation according to alumina content of aged porcelain insulator[J]. Journal of Materials Research and Technology, 2020, 9(5): 9777-9783.
[6] 胡章胤. 超高压瓷绝缘子用水泥胶合剂的性能研究[D]. 武汉: 武汉理工大学, 2021.
HU Z Y. Study on the properties of cement adhesive for ultra high voltage porcelain insulator[D]. Wuhan: Wuhan University of Technology, 2021 (in Chinese).
[7] 侯立红, 赵小玻. 走出对水泥胶合剂认识的几个误区[J]. 现代技术陶瓷, 2013, 34(5): 43-46.
HOU L H, ZHAO X B. Getting rid of the several misunderstandings of cement compo[J]. Advanced Ceramics, 2013, 34(5): 43-46 (in Chinese).
[8] 孟将, 陈国宏, 王若民, 等. 支柱瓷绝缘子的组织结构及其可靠性[J]. 硅酸盐通报, 2015, 34(7): 2001-2006.
MENG J, CHEN G H, WANG R M, et al. Microstructure and reliability of ceramic stanchion insulators[J]. Bulletin of the Chinese Ceramic Society, 2015, 34(7): 2001-2006 (in Chinese).
[9] KIM T, SANYAL S, KOO J B, et al. Analysis of cement deterioration in outdoor high-voltage insulator[J]. Materials, 2019, 12(24): 4201.
[10] KARAMAN H S, SHERIF S M M, EL-GAMAL S M A, et al. Performance enhancing of porcelain insulators using low cost micro additives[J]. Ain Shams Engineering Journal, 2024, 15(4): 102622.
[11] JEON S, KIM T, LEE Y J, et al. Porcelain suspension insulator for OHTL: a comparative study of new and used insulators using 3D-CT[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2019, 26(5): 1654-1659.
[12] 郭飞, 沙建芳, 韩方玉, 等. 半干水泥胶合剂工作性量化[J]. 电瓷避雷器, 2015(6): 12-15.
GUO F, SHA J F, HAN F Y, et al. The workability quantization of cement compo[J]. Insulators and Surge Arresters, 2015(6): 12-15 (in Chinese).
[13] 周卫兵, 张雯雪, 周军, 等. 大吨位盘形悬式瓷绝缘子用水泥胶合剂的制备与性能研究[J]. 电瓷避雷器, 2023(6): 219-225.
ZHOU W B, ZHANG W X, ZHOU J, et al. Preparation and properties of large tonnage disc suspension porcelain insulators[J]. Insulators and Surge Arresters, 2023(6): 219-225 (in Chinese).
[14] 庞小峰, 袁志勇, 唐瑛, 等. 绝缘子早强型水泥胶合剂配方优化[J]. 广东电力, 2020, 33(7): 121-128.
PANG X F, YUAN Z Y, TANG Y, et al. Optimization of adhesive formulas of early-strength cement for insulators[J]. Guangdong Electric Power, 2020, 33(7): 121-128 (in Chinese).
[15] 张俊双, 万润楠, 吕丽, 等. 大温差极低温环境下瓷悬式绝缘子机电性能试验分析[J]. 内蒙古电力技术, 2018, 36(6): 11-15+20.
ZHANG J S, WAN R N, LYU L, et al. Test and analysis of porcelain suspension insulators with large temperature difference in extremely low temperature environment[J]. Inner Mongolia Electric Power, 2018, 36(6): 11-15+20 (in Chinese).
[16] LACOMBE C, VIDAL T, SELLIER A, et al. Creep of concrete during alkali-aggregates reaction[J]. Construction and Building Materials, 2022, 336: 127355.
[17] LACOMBE C, VIDAL T, SELLIER A, et al. Compressive creep of a concrete affected by advanced alkali-aggregate reaction[J]. Construction and Building Materials, 2024, 421: 135627.
[18] 吴晓刚, 杨健辉, 袁冬冬, 等. 骨料种类对超高性能混凝土性能影响机理研究[J]. 硅酸盐通报, 2024, 43(9): 3164-3172.
WU X G, YANG J H, YUAN D D, et al. Mechanism of aggregate type influence on properties of ultra-high performance concrete[J]. Bulletin of the Chinese Ceramic Society, 2024, 43(9): 3164-3172 (in Chinese).
[19] SAHA A K, SARKER P K. Expansion due to alkali-silica reaction of ferronickel slag fine aggregate in OPC and blended cement mortars[J]. Construction and Building Materials, 2016, 123: 135-142.
[20] 中华人民共和国建设部. 混凝土用水标准(附条文说明): JGJ 63—2006[S]. 北京: 中国建筑工业出版社, 2006.
Ministry of Construction of the People's Republic of China. Standard of water for concrete: JGJ 63—2006[S]. Beijing: China Architecture & Building Press, 2006 (in Chinese).
[21] 国家市场监督管理总局, 中国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.
State Administration for Market Regulation, National Standardization Administration of the People's Republic of China. Test method of cement mortar strength (ISO method): GB/T 17671—2021[S]. Beijing: Standards Press of China, 2021 (in Chinese).
[22] 国家市场监督管理总局, 中国国家标准化管理委员会. 水泥水化热测定方法: GB/T 12959—2024[S]. 北京: 中国标准出版社, 2024.
State Administration for Market Regulation, National Standardization Administration of the People's Republic of China. Test methods for heat of hydration of cement: GB/T 12959—2024[S]. Beijing: Standards Press of China, 2024 (in Chinese).
[23] 国家质量监督检验检疫总局, 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.
General Administration of Quality Supervision, Inspection and Quarantine of the Peoples Republic of China, National Standardization Administration of the People's Republic of China. Test method for fluidity of cement mortar: GB/T 2419—2005[S]. Beijing: Standards Press of China, 2005 (in Chinese).
[24] 国家市场监督管理总局, 中国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.
State Administration for Market Regulation, National Standardization Administration of the People's Republic of China. Test methods for water requirement of standard consistency, setting time and soundness of the Portland cement: GB/T 1346—2024[S]. Beijing: Standards Press of China, 2024 (in Chinese).
[25] 中华人民共和国国家发展和改革委员会. 绝缘子胶装用水泥胶合剂: JB/T 4307—2004[S]. 北京: 机械工业出版社, 2004.
National Development and Reform Commission. Cement mortar for insulators: JB/T 4307—2004[S]. Beijing: China Machine Press, 2004 (in Chinese).
[26] 国家质量监督检验检疫总局, 中国国家标准化管理委员会. 绝缘子串元件的热机和机械性能试验: GB/T 22708—2008[S]. 北京: 中国标准出版社, 2009.
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China, National Standardization Administration of the People's Republic of China. Thermal-mechanical performance test and mechanical performance test on string insulator units: GB/T 22708—2008[S]. Beijing: Standards Press of China, 2009 (in Chinese).
[27] BULLARD J W, JENNINGS H M, LIVINGSTON R A, et al. Mechanisms of cement hydration[J]. Cement and Concrete Research, 2011, 41(12): 1208-1223.
[28] KARPOVA E, SKRIPKIŪNAS G, BARAUSKAS I, et al. Influence of carbon nanotubes and polycarboxylate superplasticiser on the Portland cement hydration process[J]. Construction and Building Materials, 2021, 304: 124648.
[29] 李北星, 郭裕鑫, 易浩, 等. 预湿再生砂与膨胀剂协同作用对再生砂混凝土收缩性能的影响[J]. 硅酸盐通报, 2024, 43(9): 3368-3377.
LI B X, GUO Y X, YI H, et al. Effects of synergistic action of pre-wetting recycled sand and expansion agents on shrinkage properties of recycled sand concrete[J]. Bulletin of the Chinese Ceramic Society, 2024, 43(9): 3368-3377 (in Chinese).
[30] 李鹏, 苗苗, 马晓杰. 膨胀剂对补偿收缩混凝土性能影响的研究进展[J]. 硅酸盐通报, 2016, 35(1): 167-173.
LI P, MIAO M, MA X J. Effect of expansive agent on the performance of shrinkage-compensated concrete[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(1): 167-173 (in Chinese).
[31] JENNINGS H M, KUMAR A, SANT G. Quantitative discrimination of the nano-pore-structure of cement paste during drying: new insights from water sorption isotherms[J]. Cement and Concrete Research, 2015, 76: 27-36.