Effect of water on the thermal properties of argillite – based geopolymers.
Source abstract
Abstract
Abstract This study focuses on the effect of consolidation time and water immersion on the thermal behavior of geopolymers based on mixture of kaolin and argillite calcined at 750 °C. In order to assess the fire resistance water and thermal treatment at 1000 °C were performed. Compressive strength and structural changes of the samples before and after treatment were investigated. It was demonstrated that the age of geopolymer (7, 14 and 28 days of consolidation) does not have a significant effect on strength neither before (22 MPa) nor after (30 MPa) thermal treatment. The results also show that all samples present higher compressive strength ratio (σafter/σbefore ~ 1.4). The geopolymer samples do not exhibit structural variation over the time in agreement with the compressive strength values. The good performance of compressive strength after 1000 °C was due to the formation of the same crystalline phases after heat treatment such as zeolite (4%) and leucite type phases (62%) and wollastonite (18%) which were also evidenced by SEM observations. The decrease of compressive strength after water immersion (16 MPa) and after thermal treatment (19 MPa) was explained by the decrease of arcanite by 70% as well as the amorphous phase content. Nevertheless, leucite (46%) and wollastonite (24%) were formed. In conclusion, the use of mixture of kaolin and argillite calcined at 750 °C leads to water and thermal resistant geopolymers.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Concrete Properties and Behavior
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References (33)
Show source-provided references
1. Geopolymer foam concrete: an emerging material for sustainable construction10.1016/j.conbuildmat.2014.01.081 ↗
2. Effect of fire on concrete and concrete structures10.1002/pse.51 ↗
3. M. Tognonvi, S. Petlitckaia, A. Gharzouni, M. Fricheteau, N. Texier-Mandoki, X. Bourbon, S. Rossignol, How to improve the post-thermal treatment mechanical strength of argillite based alkali-activated materials, Accepted in Clays and Clay Miner.Springer.
4. Thermal resistance of argillite-based alkali-activated materials. Part 1: effect of calcination processes and alkali cation10.1016/j.matchemphys.2018.06.079 ↗
5. Thermal resistance of argillite based alkali-activated materials. Part 2: identification of the formed crystalline phases10.1016/j.matchemphys.2018.07.036 ↗
6. New cementitious materials based on alkali-activated fly ash: performance at high temperatures10.1111/j.1551-2916.2008.02625.x ↗
7. Comparative performance of geopolymers made with metakaolin and fly ash after exposure to elevated temperatures10.1016/j.cemconres.2007.08.021 ↗
8. Influence of the chemical and mineralogical composition on the reactivity of volcanic ashes during alkali activation10.1016/j.ceramint.2013.06.072 ↗
9. oisture stability of alkali activated glass powder-based binders10.1016/j.cemconcomp.2013.09.011 ↗
10. Potential of using granite waste as raw material for geopolymer synthesis10.1016/j.ceramint.2015.10.091 ↗
11. Ambient cured fly ash geopolymer coatings for concrete10.3390/ma12060923 ↗
12. Efflorescence: a critical challenge for geopolymer applications?
13. Wetting and drying cycle effect on strength of geopolymer fly ash building brick10.15580/GJSETR.2014.2.022414122 ↗
14. Role of metakaolin dehydroxylation in geopolymer synthesis10.1016/j.powtec.2013.09.022 ↗
15. How to control the geopolymer setting time with the alkaline silicate solution10.1016/j.jnoncrysol.2018.02.036 ↗
16. Comparative performance of geopolymers made with metakaolin and fly ash after exposure to elevated temperatures10.1016/j.cemconres.2007.08.021 ↗
17. Thermal resistance of fly ash based rubberized geopolymer concrete10.1016/j.jobe.2018.05.025 ↗
18. The reaction between rice husk ash and Ca(OH)2 solution and the nature of its product10.1016/S0008-8846(98)00172-0 ↗
19. Effect of elevated temperatures on geopolymer paste, mortar and concrete10.1016/j.cemconres.2009.10.017 ↗
20. Damage behavior of geopolymer composites exposed to elevated temperatures10.1016/j.cemconcomp.2008.08.001 ↗
21. Geopolymers: inorganic polymeric new materials10.1007/BF01912193 ↗
22. Investigation of medium range order in silicate glasses by infrared spectroscopy10.1016/j.vibspec.2012.11.015 ↗
23. Z. Zhang, H. Wang, J. Provis, A. Reid, Efflorescence: a critical challenge for geopolymer applications?Concrete Institute of Australia's Biennial National Conference (Concrete 2013): Understanding Concrete, 16-18 Oct 2013, Gold Coast, Australia.
24. Study of the structural stability, pH variation in water and influence of the curing conditions on mechanical resistance of mineral wastes geopolymeric artificial
25. Feasibility of aluminosilicate compounds from various raw materials: chemical reactivity and mechanical properties10.1016/j.powtec.2016.06.001 ↗
26. FTIR analysis of water structure and its influence on the flotation of arcanite (K2SO4) and epsomite (MgSO4•7H2O)10.1016/j.minpro.2013.04.007 ↗
27. Alkali-activated materials based on callovo-oxfordian argillite: formation, structure and mechanical properties
28. Thermal behaviors of a porous calcium silicate material prepared from coal-bearing strata kaolinite10.1007/s10973-019-08084-0 ↗
29. Derrick · 1999
30. Chukanov · 2016
31. Understanding the relationship between geopolymers composition, microstructure and mechanical properties10.1016/j.colsurfa.2005.06.060 ↗
32. Effect of K2O/SiO2 ratio on the crystallization of leucite in silicate –based glasses
33. The effect of alkaline earth carbonates on the microstructure and mechanical properties of impermeable and lightweight ceramics10.1016/j.jeurceramsoc.2018.08.011 ↗