Regulation of the composition of metakaolin-based geopolymer: Effect of zeolite crystal seeds
Source abstract
Abstract
Recently, geopolymer have received more attention due to their high temperature stability and was considered to be a suitable material for preparing fireproof materials. However, dehydration of geopolymer gel phase products at high temperatures has been found to restrict the improvement of its fire resistance. And crystals such as zeolite and zeolite-like were confirmed to possess high-temperature resistance. Therefore, in this study, the preparation of zeolite was referenced and the crystal seeds induction method was used to modulate the composition of metakaolin-based geopolymer. Aiming to transform the gelatinous products to crystals (zeolites) and improve their fire resistance. Effects of zeolite on the composition of the geopolymer phase and its modulation mechanism were explored by XRD, SEM, TG, FT-IR, and 29Si NMR. Results suggested that zeolite promoted the transformation of the geopolymer gel phase to the zeolite crystal phase. New crystals were first generated on the surface and around the original crystals, and their crystal size was significantly reduced. Moreover, the content of zeolite seeds played a vital role in regulating the geopolymer phase composition. The induction effect was optimum, and about 6.19% of the gel phase was transformed into zeolite when the zeolite content was 10%, which is conducive to improving the fire resistance of geopolymer. This study provides a novel method for the preparation of high-performance fireproof geopolymer materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Fire effects on concrete materials · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (61)
Show source-provided references
1. Multi-objective optimization of fly ash-slag based geopolymer considering strength, cost and CO2 emission: a new framework based on tree-based ensemble models and NSGA-II
2. Alkali-activated binders by use of industrial by-products10.1016/j.cemconres.2004.06.019 ↗
3. Very high strength (120 MPa) class F fly ash geopolymer mortar activated at different NaOH amount, heat curing temperature and heat curing duration10.1016/j.conbuildmat.2015.08.089 ↗
4. Effects of aggregate types on acid corrosion attack upon fly – ash geopolymer and Portland cement concretes – comparative study10.1016/j.conbuildmat.2021.125468 ↗
5. Enhancing the thermal performance of Class F fly ash-based geopolymer by sodalite10.1016/j.conbuildmat.2021.125574 ↗
6. Damage behavior of geopolymer composites exposed to elevated temperatures10.1016/j.cemconcomp.2008.08.001 ↗
7. A critical review of geopolymer properties for structural fire-resistance applications10.1016/j.conbuildmat.2019.06.076 ↗
8. An experimental method for assessing the spalling sensitivity of concrete mixture submitted to high temperature10.1016/j.cemconcomp.2012.04.002 ↗
9. Combined effect of flax fibers and steel fibers on spalling resistance of ultra-high performance concrete at high temperature10.1016/j.cemconcomp.2021.104067 ↗
10. Effect of elevated temperatures on geopolymer paste, mortar and concrete10.1016/j.cemconres.2009.10.017 ↗
11. New cementitious materials based on alkali-activated fly ash: performance at high temperatures10.1111/j.1551-2916.2008.02625.x ↗
12. Effect of transient creep on compressive strength of geopolymer concrete for elevated temperature exposure10.1016/j.cemconres.2013.11.014 ↗
13. Stress–strain behaviour and abrupt loss of stiffness of geopolymer at elevated temperatures10.1016/j.cemconcomp.2010.07.010 ↗
14. Thermal stability and microstructure of metakaolin-based geopolymer blended with rice husk ash10.1016/j.clay.2020.105769 ↗
15. Thermally induced microstructural changes in fly ash geopolymer: experimental results and proposed model10.1111/jace.13370 ↗
16. Thermal and structural stability of microporous natural clinoptilolite zeolite10.1016/j.micromeso.2022.112101 ↗
17. Structural analysis of Cu/Zeolite with controlled Si/Al ratio and the resulting thermal stability
18. Possible pathway of zeolite formation through alkali activation chemistry of metakaolin for geopolymer–zeolite composite materials: ATR-FTIR study10.1016/j.jssc.2022.123808 ↗
19. Geopolymer-zeolite composites: a review10.1016/j.jclepro.2019.05.152 ↗
20. Preparation and validation of sustainable metakaolin based geopolymer concrete for structural application10.1016/j.conbuildmat.2023.130688 ↗
21. Influence of precursor materials and molar ratios on normal, high, and ultra-high performance geopolymer concrete – a state of art review10.1016/j.conbuildmat.2023.132006 ↗
22. Geopolymerization reaction, microstructure and simulation of metakaolin-based geopolymer at extended Si/Al ratios10.1016/j.cemconcomp.2017.01.014 ↗
23. Geopolymer from Algerian metakaolin. Influence of secondary minerals10.1016/j.clay.2008.11.001 ↗
24. Effect of vacuum dehydration on gel structure and properties of metakaolin-based geopolymer10.1016/j.ceramint.2017.07.190 ↗
25. Application of the Taguchi approach for the composition optimization of alkali activated fly ash binders10.1016/j.conbuildmat.2015.05.005 ↗
26. Effect of temperature and alkaline concentration on metakaolin leaching kinetics10.1016/j.ceramint.2014.02.071 ↗
27. Synthesis and characterization of geopolymer binders based on local materials from Burkina Faso – metakaolin and rice husk ash10.1016/j.conbuildmat.2016.07.102 ↗
28. The effects of nanomaterials on the characteristics of aluminosilicate-based geopolymer composites: a critical review
29. Enhancement of mechanical and toughness properties of carbon fiber-reinforced geopolymer pastes comprising nano calcium oxide10.1007/s41779-022-00764-9 ↗
30. Experimental study on mechanical, toughness and microstructural characteristics of micro-carbon fibre-reinforced geopolymer having nano TiO210.1016/j.aej.2022.09.001 ↗
31. Thermal and structural micro analysis of micro silica blended fly ash based geopolymer composites10.1016/j.jnoncrysol.2018.07.027 ↗
32. Microstructural and non-destructive investigation of the effect of high temperature exposure on ground ferronickel slag blended fly ash geopolymer mortars
33. Formulation, mechanical properties and phase analysis of fly ash geopolymer with ladle furnace slag replacement10.1016/j.jmrt.2021.03.065 ↗
34. Seed-assisted zeolite synthesis: the impact of seeding conditions and interzeolite transformations on crystal structure and morphology10.1016/j.micromeso.2020.110174 ↗
35. K and Ca exchange behavior of zeolite A10.1016/j.micromeso.2011.09.025 ↗
36. Effect of nano-silica on the efflorescence of waste based alkali-activated inorganic binder10.1016/j.conbuildmat.2018.02.006 ↗
37. Effect of zeolite on waste based alkali-activated inorganic binder efflorescence10.1016/j.conbuildmat.2017.10.065 ↗
38. Thermal and fire resistance of Class F fly ash based geopolymer – a review10.1016/j.conbuildmat.2022.126529 ↗
39. Thermal behavior and characteristics of fired geopolymer produced from local Cameroonian metakaolin10.1016/j.ceramint.2013.08.126 ↗
40. Effect of Portland cement on the properties of geopolymer prepared from granite powder and fly ash by alkali-thermal activation
41. Investigation on a green olivine nano-silica source based activator in alkali activated slag-fly ash blends: reaction kinetics, gel structure and carbon footprint10.1016/j.cemconres.2017.06.007 ↗
42. Effects of ladle slag on Class F fly ash geopolymer: reaction mechanism and high temperature behavior10.1016/j.cemconcomp.2022.104468 ↗
43. New insights into the early-age reaction kinetics of metakaolin geopolymer by 1H low-field NMR and isothermal calorimetry10.1016/j.cemconcomp.2023.104932 ↗
44. Insights to the sulfate resistance and microstructures of alkali-activated metakaolin/slag pastes10.1016/j.clay.2020.105968 ↗
45. Modification of zeolite 4A for use as an adsorbent for glyphosate and as an antibacterial agent for water10.1016/j.ecoenv.2018.02.043 ↗
46. Interaction of silica fume on flexural properties of 10 mm-thickness geopolymer based on fly ash and ladle furnace slag under the thermal conditions
47. Evolution of binder structure in sodium silicate-activated slag-metakaolin blends10.1016/j.cemconcomp.2010.09.004 ↗
48. Synthesis of kaliophilite from high calcium fly ash: effect of alkali concentration
49. ATR/FT-IR studies of zeolite formation during alkali-activation of metakaolin10.1016/j.solidstatesciences.2019.06.004 ↗
50. Hydrothermal synthesis of zeolite NaA from kaolin10.1142/S1793604719500759 ↗
51. Effective removal of methane using nano-sized zeolite 4A synthesized from kaolin10.1016/j.inoche.2019.107639 ↗
52. In-situ transition of amorphous gels to Na-P1 zeolite in geopolymer: mechanical and adsorption properties10.1016/j.conbuildmat.2019.01.067 ↗
53. Thermal behavior of metakaolin-based geopolymer cements using sodium waterglass from rice husk ash and waste glass as alternative activators10.1007/s12649-016-9653-7 ↗
54. Effect of kaolin and argillite mixtures on the dielectric properties of geopolymer
55. 2 - An overview of the chemistry of alkali-activated cement-based binders
56. Effect of cristobalite on the mechanical behaviour of metakaolin-based geopolymer in artificial seawater
57. 29Si,27Al magic-angle-spinning nuclear magnetic resonance (MAS NMR) studies of kaolinite and its thermal transformation products10.1007/BF02840386 ↗
58. Solid‐state NMR studies of the structure and reactivity of metakaolinite10.1002/anie.199005531 ↗
59. 29 Si MAS NMR study of silica gels and xerogels: influence of the catalyst10.1023/A:1015391922572 ↗
60. Magic-angle-spinning NMR (MAS NMR) spectroscopy and the structure of zeolites10.1002/anie.198302593 ↗
61. Fusion of phosphate by-products and glass waste for preparation of alkali-activated binders10.1016/j.compositesb.2022.110044 ↗