Fire Behavior and Adhesion of Magnesium Phosphate Coatings for the Protection of Steel Structures
Source abstract
Abstract
This paper presents the main properties of magnesium phosphate cements (MPCs) to be used as coatings for passive fire protection of steel structures. The influence of various additions, i.e., waste glass powder, fly ash, a styrene–acrylic dispersion, and expandable graphite, on the fire behavior and the adhesion to steel substrates of magnesium phosphate coatings is presented in this paper. The setting time of studied cements is extended when magnesia, the main component of MPCs, is partially replaced with fly ash or/and waste glass powder. The mineralogical composition of these cements, before and after thermal treatment at 1050 °C, was assessed by X-ray diffraction and could explain the changes in compressive strength, volume, and mass recorded for the thermally treated specimens. The studied magnesium phosphate coatings have a good adherence to the steel substrate (assessed by a pull-off test) both before and after direct contact with a flame (fire test) and decrease the temperature of the steel substrate by 30% with respect to the one recorded for the uncoated steel plate.
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Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Layered Double Hydroxides Synthesis and Applications · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department Science and Engineering of Oxide Materials, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 060042 Bucharest, Romania
Metallic Materials Science, Physical Metallurgy Department, Faculty of Science and Engineering of Materials, University Politehnica of Bucharest, 060042 Bucharest, Romania
Department Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 060042 Bucharest, Romania
References (40)
Show source-provided references
1. Intumescent coatings used for the fire-safe design of steel structures: A review10.1016/j.jcsr.2019.105712 ↗
2. (2005). Eurocode 3 Design of Steel Structures—Part 1, 2: General Rules—Structural Fire Design (Standard No. EN 1993-1-2:2005).
3. Intumescent coatings: A review on recent progress10.1007/s11998-016-9815-3 ↗
4. Review: Effects of nanoparticles in cementitious construction materials at ambient and high temperatures10.1016/j.jobe.2020.102008 ↗
5. Intumescent coatings based on alkali-activated borosilicate inorganic polymers10.1007/s11998-019-00274-7 ↗
6. Cirstea, N., Badanoiu, A., and Boscornea, A. (2022). Intumescent Silicate Coatings with the Addition of Alkali-Activated Materials. Polymers, 14.10.3390/polym14101937 ↗
7. Fire-proof silicate coatings with magnesium-containing fire retardant10.1007/s11998-017-0010-y ↗
8. Alkali activated mortars with intumescent properties10.37358/RC.19.2.6929 ↗
9. Nicoara, A., and Badanoiu, A. (2011). Influence of Alkali Activator Type on the Hydrolytic Stability and Intumescence of Inorganic Polymers Based on Waste Glass. Materials, 15.10.3390/ma15010147 ↗
10. Synthesis and properties of alkali activated borosilicate inorganic polymers based on waste glass10.1016/j.conbuildmat.2017.01.026 ↗
11. Influence of the aerogel/expanded perlite composite as thermal insulation aggregate on the cement-based materials10.1016/j.conbuildmat.2020.121728 ↗
12. Effect of incorporation of raw vermiculite as partial sand replacement on the properties of self-compacting mortars10.1016/j.conbuildmat.2019.06.077 ↗
13. Vijan, C.A., Badanoiu, A., Voicu, G., and Nicoara, A. (2021). Phosphate Cements Based on Calcined Dolomite: Influence of Calcination Temperature and Silica Addition. Materials., 14.10.3390/ma14143838 ↗
14. Dai, X., Qian, J., Qin, J., Yue, Y., Zhao, Y., and Jia, X. (2022). Preparation and Properties of Magnesium Phosphate Cement-Based Fire Retardant Coating for Steel. Materials, 15.10.3390/ma15124134 ↗
15. Properties of a magnesium phosphate cement-based fire-retardant coating containing glass fiber or glass fiber powder10.1016/j.conbuildmat.2017.12.059 ↗
16. Vijan, A., Badanoiu, A., Voicu, G., and Nicoara, A. (2021). Coatings Based on Phosphate Cements for Fire Protection of Steel Structures. Materials, 14.10.3390/ma14206213 ↗
17. Research progress on interfacial bonding between magnesium phosphate cement and steel: A review10.1016/j.conbuildmat.2022.127925 ↗
18. Wagh, A. (2016). Chemically Bonded Phosphate Ceramics: Twenty-First Century Materials with Diverse Applications. Chemically Bonded Phosphate Ceramics, Elsevier.10.1016/B978-0-08-100380-0.00002-6 ↗
19. Properties and applications of magnesia—Phosphate cement mortar for rapid repair of concrete10.1016/S0008-8846(00)00419-1 ↗
20. The influence of potassium phosphate and fly ash addition on the setting time and mechanical strengths of magnesium phosphate cements
21. Characteristics and durability test of magnesium phosphate cement-based material for rapid repair of concrete10.1007/BF02479332 ↗
22. Property evaluation of magnesium phosphate cement mortar as patch repair material10.1016/j.conbuildmat.2009.10.039 ↗
23. Brückner, T., Meininger, M., Groll, J., Kübler, A., and Gbureck, U. (2019). Magnesium Phosphate Cement as Mineral Bone Adhesive. Materials, 12.10.3390/ma12233819 ↗
24. Magnesium Phosphate Cement Systems for Hard Tissue Applications: A Review10.1021/acsbiomaterials.6b00056 ↗
25. Magnesium phosphate cements for endodontic applications with improved long-term sealing ability10.1111/iej.12123 ↗
26. Design of polymeric binders to improve the properties of magnesium phosphate cement10.1016/j.conbuildmat.2021.123202 ↗
27. A study of the bonding performance of magnesium phosphate cement on mortar and concrete10.1016/j.conbuildmat.2017.03.090 ↗
28. Deng, Q., Lai, Z., Xiao, R., Wu, J., Liu, M., Lu, Z., and Lv, S. (2021). Effect of Waste Glass on the Properties and Microstructure of Magnesium Potassium Phosphate Cement. Materials, 14.10.3390/ma14082073 ↗
29. Synthesis of intumescent materials by alkali activation of glass waste using intercalated graphite additions10.1016/j.matpr.2020.12.228 ↗
30. Preparation and characterization of expanded graphite/metal oxides for antimicrobial application10.1016/j.msec.2017.03.043 ↗
31. (2016). Methods of Testing Cement—Part 3: Determination of Setting Times and Soundness (Standard No. EN 196-3:2016). Available online: https://standards.iteh.ai/catalog/standards/cen/e4921eca-8101-4261-b066-25d19b9b8e8a/en-196-3-2016.
32. Panchego-Torgal, F., Labrincha, J.L.C., Palomo, A., and Chindaprasirt, P. (2015). Handbook of Alkali-Activated Cements, Mortars and Concretes, Elsevier Ltd.10.1533/9781782422884.1 ↗
33. Enhanced Gypsum Panels for Fire Protection10.1061/(ASCE)0899-1561(2008)20:1(71) ↗
34. Factors that affect the properties of magnesium phosphate cement10.1016/j.conbuildmat.2013.05.103 ↗
35. Yang, Y., Fang, B., Zhang, G., Guo, J., and Liu, R. (2022). Hydration Performance of Magnesium Potassium Phosphate Cement Using Sodium Alginate as a Candidate Retarder. Materials, 15.10.3390/ma15030943 ↗
36. Characterization of and Structural Insight into Struvite-K, MgKPO4·6H2O, an Analogue of Struvite10.1021/acs.inorgchem.0c02802 ↗
37. Plerosphere and its role in reduction of emitted fine fly ash particles from pulverized coal-fired power plants10.1016/j.fuel.2008.08.015 ↗
38. Effect of temperature curing on properties and hydration of wollastonite blended magnesium potassium phosphate cements10.1016/j.cemconres.2021.106370 ↗
39. Fabrication and characterization nanostructured forsterite foams with high compressive strength, desired porosity and suitable bioactivity for biomedical applications10.1007/s10971-016-4240-8 ↗
40. Use of recycled glass as a raw material in the manufacture of Portland cement10.1007/BF02483139 ↗