Effect of HEMC on the early hydration of Portland cement highlighted by isothermal calorimetry

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• 作者：Guofang Zhang (1)
  Jianbin Zhao (1)
  Peiming Wang (1)
  Linglin Xu (1)
  
  1. Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education ; School of Materials Science and Engineering ; Tongji University ; Shanghai ; 201804 ; China
  
• 关键词：Portland cement ; Hydroxyethyl methyl cellulose (HEMC) ; Early hydration ; Isothermal calorimetry
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：119
• 期：3
• 页码：1833-1843
• 全文大小：1,800 KB
• 参考文献：1. Wagner HB. Hydraulic cement mortar compositions and methods of use. US Patent 2, 934, 932, 1960.
  2. Wagner HB. Dry cement composition comprising Portland cement, methyl cellulose, and polyvinyl alcohol and method of installing tile with same. US Patent 3, 030, 258, 1962.
  3. Plank, J Applications of biopolymers in construction engineering. In: Steinb眉chel, A eds. (2003) Biopolymers. Wiley-VCH, Weinheim, pp. 29-95
  4. D枚nges, R (1990) Non-谋onic cellulose ethers. Brit Polym J 23: pp. 315-326
  5. Jenni, A, Holzer, L, Zurbriggen, R (2005) Influence of polymers on microstructure and adhesive strength of cementitious tile adhesive mortars. Cem Concr Res 35: pp. 35-50 CrossRef
  6. Wang, PM, Xu, Q, Stark, J (2001) Study on physical properties of HEMC cement mortar with ground granulated blast furnace slag and superplasticizer. J Build Mater 4: pp. 122-126
  7. Silaghi, L, Rozenberg, M, Lascu, M (1999) Influence of MHEC and HPC additives on the properties of cement based mortar. Materiale de Constructii (Bucharest) 4: pp. 271-274
  8. B眉lichen, D, Kainz, J, Plank, J (2012) Working mechanism of methyl hydroxyethyl cellulose (MHEC) as water retention agent. Cem Concr Res 42: pp. 953-959 CrossRef
  9. Ciobanu, C, Iluc, S, Lazau, I (2011) Some physico-mechanical properties of dry mortars containing cellulose ethers. Rom J Mater 41: pp. 30-41
  10. Patural, L, Marchal, P, Govin, A (2011) Cellulose ethers influence on water retention and consistency in cement-based mortars. Cem Concr Res 41: pp. 46-55 CrossRef
  11. Betioli, AM, Gleize, PJP, Silva, DA (2009) Effect of HMEC on the consolidation of cement pastes: isothermal calorimetry versus oscillatory rheometry. Cem Concr Res 39: pp. 440-445 CrossRef
  12. Ferraris, CF, Martys, NS (2003) Relating fresh concrete viscosity measurements from different rheometers. J Res Natl Inst Stan 108: pp. 229-234 CrossRef
  13. Singh, NK, Mishra, PC, Singh, VK (2003) Effects of hydroxyethyl cellulose and oxalic acid on the properties of cement. Cem Concr Res 33: pp. 1319-1329 CrossRef
  14. Muller I. Influence of cellulose ethers on the kinetics of early Portland cement hydration. Dissertation, University of Karlsruhe, 2006.
  15. Knapen E. Microstructure formation in cement mortars modified with water-soluble polymers. Dissertation, K.U. Leuven, 2007.
  16. Ciobanu, C, Lazau, I, Pacurariu, C (2013) Investigation of the cellulose ethers effect on the Portland cement hydration by thermal analysis. J Therm Anal Calorim 112: pp. 325-330 CrossRef
  17. Pourchez, J, Peschard, A, Grosseau, P (2006) HPMC and HEMC influence on cement hydration. Cem Concr Res 36: pp. 288-294 CrossRef
  18. Jenni, A, Zurbriggen, R, Herwegh, M (2006) Changes in microstructures and physical properties of polymer-modified mortars during wet storage. Cem Concr Res 36: pp. 79-90 CrossRef
  19. Gruyaert, E, Robeyst, N, Belie, N (2010) Study of the hydration of Portland cement blended with blast-furnace slag by calorimetry and thermogravimetry. J Therm Anal Calorim 102: pp. 941-951 CrossRef
  20. Baert, G, Hoste, S, Schutter, G (2008) Reactivity of fly ash in cement paste studied by means of thermogravimetry and isothermal calorimetry. J Therm Anal Calorim 94: pp. 485-492 CrossRef
  21. Siler, P, Kratky, J, Belie, N (2012) Isothermal and solution calorimetry to assess the effect of superplasticizers and mineral admixtures on cement hydration. J Therm Anal Calorim 107: pp. 313-320 CrossRef
  22. Taylor, H, Barret, P, Brown, P (1984) The hydration of tricalcium silicate. Mater Struct 17: pp. 457-468
  23. Peschard, A, Govina, A, Pourchez, J (2006) Effect of polysaccharides on the hydration of cement suspension. J Eur Ceram Soc 26: pp. 1439-1445 CrossRef
  24. Bullard, JW, Jennings, HM, Livingston, RA (2011) Mechanisms of cement hydration. Cem Concr Res 41: pp. 1208-1223 CrossRef
  25. Su, L, Ma, BG, Jian, SW (2013) Hydration heat effect of cement pastes modified with hydroxypropyl methyl cellulose ether and expanded perlite. J Wuhan Univ Technol 28: pp. 122-126 CrossRef
  26. Ma, BG, Ou, ZH, Jian, SW (2011) Influence of cellulose ethers on hydration products of Portland cement. J Wuhan Univ Technol 26: pp. 588-593 CrossRef
  27. Lazau, I, Pacurariu, C, Ciobanu, C (2012) The use of thermal analysis to investigate the effects of cellulose ethers on the Portland cement hydration. J Therm Anal Calorim 110: pp. 103-110 CrossRef
  28. Bogue, RH (1947) The chemistry of Portland cement. Reinhold Publishing Corporation, New York
  29. Schindler, AK, Folliard, KJ (2005) Heat of hydration models for cementitious materials. ACI Mater J 102: pp. 24-33
  30. Krstulovic, R, Dabic, P (2000) A conceptual model of the cement hydration process. Cem Concr Res 30: pp. 693-698 CrossRef
  31. Lawrence, P, Cyr, M, Ringot, E (2003) Mineral admixture in mortars-effect of inert materials on short-term hydration. Cem Concr Res 33: pp. 1939-1947 CrossRef
  32. Wang, JC, Yan, PY (2006) Influence of initial casting temperature and dosage of fly ash on hydration heat evolution of concrete under adiabatic condition. J Therm Anal Calorim 85: pp. 755-760 CrossRef
  33. Petit, JY, Wirquin, E (2013) Evaluation of various cellulose ethers performance in ceramic tile adhesive mortars. Int J Adhes Adhes 40: pp. 202-209 CrossRef
  34. Mindess, S, Young, JF (1981) Concrete. Prentice-Hall, New Jersey
  35. Hewlett, PC (2004) Lea鈥檚 chemistry of cement and concrete (4th edition). Butterworth-Heinemann, Oxford
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

The effects of hydroxyethyl methyl cellulose (HEMC) on the early hydration and main hydrates evolutions of Portland cement were quantitatively investigated by the isothermal calorimetry, setting times, X-ray diffraction analysis, and environmental scanning electron microscope analysis. The results show that HEMC definitely affects the early hydration process of cement paste and retards the beginning of the hydration induction period and acceleration period, but increases the length of these two periods. HEMC decreases the hydration heat evolution rate during the initial reaction period and the acceleration period, but increases the hydration heat evolution rate during the deceleration period. HEMC decreases the hydration heat amount and hydration degree of cement paste at the early hydration time, especially in the first thirty-six hours. There are good positive correlations between the setting time, the length of induction period and the dosages of HEMC. HEMC also delays the formation of the hydrates and affects the morphologies of hydrates. Accordingly, HEMC remarkably retards the cement hydration at the early hydration time, and with its dosage increasing, the retardation effect of HEMC enhances.