Title:
Chloride Diffusion in Geopolymers Containing Phase Change Materials
Author(s):
Bouha EL MOUSTAPHA, Stéphanie BONNET, Abdelhafid KHELIDJ
Publication:
Symposium Paper
Volume:
362
Issue:
Appears on pages(s):
763-773
Keywords:
chloride diffusion, durability, geopolymer, microencapsulated phase change materials, mechanical strength
DOI:
10.14359/51742007
Date:
6/17/2024
Abstract:
The aim of this research is to examine the steady-state chloride migration properties of blast-furnace slag-based geopolymer mortars (GPMs) and Portland cement-based mortars (CMs). Three grades of microencapsulated phase change materials (MPCM) were used: 0%, 5%, and 10%. In addition, three rates of metakaolin (MK), namely 0%, 10%, and 20% were added to study their influence on geopolymer performance. The results show that the addition of MK increased the compressive strength of GPM-MPCM by around 10 MPa (1450 psi). On the other hand, the addition of MK also reduced chloride migration due to physical bonding on CASH and NASH gels. These effects are due to the high reactivity of MK, which favored good dissolution of silica and aluminum in MK, which participated well with calcium in GBFS to create the NASH and CASH gels. These gels improved geopolymer performance. Finally, all GPMs-MPCM showed improved mechanical performance and durability compared with CM.
Related References:
1. Energy efficiency – Topics. IEA https://www.iea.org/topics/energy-efficiency.
2. Llantoy, N., Chàfer, M. & Cabeza, L. F. A comparative life cycle assessment (LCA) of different insulation materials for buildings in the continental Mediterranean climate. Energy and Buildings 225, 110323 (2020).
3. Shadnia, R., Zhang, L. & Li, P. Experimental study of geopolymer mortar with incorporated PCM. Construction and Building Materials 84, 95–102 (2015).
4. Cao, V. D. et al. Thermal analysis of geopolymer concrete walls containing microencapsulated phase change materials for building applications. Solar Energy 178, 295–307 (2019).
5. El Moustapha, B. et al. Compensation of the negative effects of micro-encapsulated phase change materials by incorporating metakaolin in geopolymers based on blast furnace slag. Construction and Building Materials 314, 125556 (2022).
6. Climat : vers un dérèglement géopolitique ? https://www.senat.fr/rap/r15-014/r15-0143.html.
7. Neville, A. Chloride attack of reinforced concrete: an overview. Materials and Structures 28, 63–70 (1995).
8. Ravikumar, D. & Neithalath, N. An electrical impedance investigation into the chloride ion transport resistance of alkali silicate powder activated slag concretes. Cement and Concrete Composites 44, 58–68 (2013).
9. Vance, K. et al. Microstructural, Mechanical, and Durability Related Similarities in Concretes Based on OPC and Alkali-Activated Slag Binders. Int J Concr Struct Mater 8, 289–299 (2014).
10. Huang, K.-S. & Yang, C.-C. Using RCPT determine the migration coefficient to assess the durability of concrete. Construction and Building Materials 167, 822–830 (2018).
11. Lloyd, R. R., Provis, J. L. & van Deventer, J. S. J. Pore solution composition and alkali diffusion in inorganic polymer cement. Cement and Concrete Research 40, 1386–1392 (2010).
12. Bernal, S. A. & Provis, J. L. Durability of Alkali-Activated Materials: Progress and Perspectives. Journal of the American Ceramic Society 97, 997–1008 (2014).
13. Andrade, C. Calculation of chloride diffusion coefficients in concrete from ionic migration measurements. Cement and Concrete Research 23, 724–742 (1993).
14. Truc, O., Ollivier, J. P. & Carcassès, M. A new way for determining the chloride diffusion coefficient in concrete from steady state migration test. Cement and Concrete Research 30, 217–226 (2000).
15. Luping, T. & Nilsson, L.-O. CHLORIDE DIFFUSIVITY IN HIGH STRENGTH CONCRETE AT DIFFERENT AGES. NORDIC CONCRETE RESEARCH. PUBLICATION NO 11 (1992).
16. Hasnaoui, A., Ghorbel, E. & Wardeh, G. Optimization approach of granulated blast furnace slag and metakaolin based geopolymer mortars. Construction and Building Materials 198, 10–26 (2019).
17. Bernal, S. A., Mejía de Gutiérrez, R. & Provis, J. L. Engineering and durability properties of concretes based on alkali-activated granulated blast furnace slag/metakaolin blends. Construction and Building Materials 33, 99–108 (2012).
18. « EN 196-1. Methods of testing cement- Part 1: Determination of strength. European committee for standardization, 2016. ».
19. Pilehvar, S. et al. Effect of freeze-thaw cycles on the mechanical behavior of geopolymer concrete and Portland cement concrete containing micro-encapsulated phase change materials. Construction and Building Materials 200, 94–103 (2019).
20. Pilehvar, S. et al. Mechanical properties and microscale changes of geopolymer concrete and Portland cement concrete containing micro-encapsulated phase change materials. Cement and Concrete Research 100, 341–349 (2017).
21. Noolu, V., Mallikarjuna Rao, G., Sudheer kumar reddy, B. & Chavali, R. V. P. Strength and durability characteristics of GGBS geopolymer stabilized black cotton soil. Materials Today: Proceedings 43, 2373–2376 (2021).
22. NF XP P18-461, ‘Test on hardened concrete: Accelerated test of chloride ions in steady state, determination of the effective diffusion coefficient of chloride ions,’ French Standard, France, 2012.(in French).
23. Cao, V. D. et al. Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications. Energy Conversion and Management 133, 56–66 (2017).
24. Nazari, A. & Sanjayan, J. G. Synthesis of geopolymer from industrial wastes. Journal of Cleaner Production 99, 297–304 (2015).
25. Bernal, S. A., Mejía de Gutiérrez, R. & Provis, J. L. Engineering and durability properties of concretes based on alkali-activated granulated blast furnace slag/metakaolin blends. Construction and Building Materials 33, 99–108 (2012).
26. Ibrahim, M., Johari, M. A. M., Maslehuddin, M. & Rahman, M. K. Influence of nano-SiO2 on the strength and microstructure of natural pozzolan based alkali activated concrete. Construction and Building Materials 173, 573–585 (2018).
27. Sabir, B. B., Wild, S. & Bai, J. Metakaolin and calcined clays as pozzolans for concrete: a review. Cement and Concrete Composites 23, 441–454 (2001).
28. Yip, C. K., Lukey, G. C. & van Deventer, J. S. J. The coexistence of geopolymeric gel and calcium silicate hydrate at the early stage of alkaline activation. Cement and Concrete Research 35, 1688–1697 (2005).
29. Huseien, G. F., Mirza, J., Ismail, M., Ghoshal, S. K. & Ariffin, M. A. M. Effect of metakaolin replaced granulated blast furnace slag on fresh and early strength properties of geopolymer mortar. Ain Shams Engineering Journal 9, 1557–1566 (2018).
30. Luping, T. & Nilsson, L.-O. Chloride binding capacity and binding isotherms of OPC pastes and mortars. Cement and Concrete Research 23, 247–253 (1993).
31. Zibara, H. Binding of external chlorides by cement pastes. (2001).
32. El Moustapha, B. et al. Effects of microencapsulated phase change materials on chloride ion transport properties of geopolymers incorporating slag and, metakaolin, and cement-based mortars. Journal of Building Engineering 74, 106887 (2023).
33. Zhang, J., Shi, C., Zhang, Z. & Ou, Z. Durability of alkali-activated materials in aggressive environments: A review on recent studies. Construction and Building Materials 152, 598–613 (2017).
34. Pipilikaki, P. & Beazi-Katsioti, M. The assessment of porosity and pore size distribution of limestone Portland cement pastes. Construction and Building Materials 23, 1966–1970 (2009).
35. Polder, R. et al. Test methods for on site measurement of resistivity of concrete. Mat. Struct. 33, 603–611 (2000).
36. Mehta, A., Siddique, R., Ozbakkaloglu, T., Uddin Ahmed Shaikh, F. & Belarbi, R. Fly ash and ground granulated blast furnace slag-based alkali-activated concrete: Mechanical, transport and microstructural properties. Construction and Building Materials 257, 119548 (2020).
37. Bi, L., Long, G., Ma, C. & Xie, Y. Mechanical properties and water absorption of steam-cured mortar containing phase change composites. Construction and Building Materials 248, 118707 (2020).
38. Caré, S. Influence of aggregates on chloride diffusion coefficient into mortar. Cement and Concrete Research 33, 1021–1028 (2003).