Microstructural Analysis of Ambient Cured Phosphate Based-Geopolymers with Coal-Ash as Precursor

• Autorzy: Burduhos Nergis Dumitru Doru , Vizureanu Petrica , Lupescu Stefan , Burduhos Nergis Diana Petronela , Perju Manuela-Cristina , Sandu Andrei Victor

Identyfikatory

DOI

10.24425/amm.2022.137795

• Języki publikacji: EN

Abstrakty

EN

An alternative for Ordinary Portland cement (OPC) consumption is the production and integration of green cement. In other words, the clinker consumption has to be replaced with new low-carbon binders. A possible solution was introduced by the geopolymerisation technology. However, the alkaline activation of geopolymers offers the possibility of obtaining greener materials with high properties, superior to OPC, but due to the high price of sodium silicate, their industrial use is limited. In the past few years, a new activator has been discovered, namely phosphoric acid. This study approaches the obtaining of coal ash-based geopolymers activated with acid solution cured at room temperature. Accordingly, phosphoric acid, 85% by mass, was diluted in distilled water to obtain a corresponding activation solution for H₃PO₄/Al₂O₃ ratio of 1.0 and two types of geopolymers were ambient cured (22°C ±2°C). Moreover, to evaluate the geopolymerisation potential of this system (coal ash - phosphoric acid), SEM and EDS analysis was performed to investigate their morphologic characteristics.

Słowa kluczowe

EN

acid activation; coal ash; microstructural analysis; phosphate based geopolymers

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 2
• Strony: 595--600
• Opis fizyczny: Bibliogr. 27 poz., fot., rys., tab., wzory

Twórcy

autor

Burduhos Nergis Dumitru Doru

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania

• https://orcid.org/0000-0002-2716-1328

autor

Vizureanu Petrica

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania
• Universiti Malaysia Perlis (UniMAP), Center of Excellence, Geopolymer & Green Technology (CeGeoGTech), School of Material Engineering, Perlis, Malaysia

• https://orcid.org/0000-0002-3593-9400

autor

Lupescu Stefan

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania

• https://orcid.org/0000-0002-6406-8130

autor

Burduhos Nergis Diana Petronela

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania

• https://orcid.org/0000-0002-0680-9885

autor

Perju Manuela-Cristina

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania

• https://orcid.org/0000-0002-2718-2698

autor

Sandu Andrei Victor

• "Gheorghe Asachi” Technical University of Iasi, Blvd. Mangeron, No. 51, 700050, Iasi, Romania
• Universiti Malaysia Perlis (UniMAP), Center of Excellence, Geopolymer & Green Technology (CeGeoGTech), School of Material Engineering, Perlis, Malaysia

• https://orcid.org/0000-0002-9292-749X

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).