Basalt fibers were surface treated with silane coupling agents as a method to enhance the adhesion and durability of fiber-matrix interfaces in concrete based composite materials. In particular, this work has been focused on the study of basalt fibers chemical coatings with aminosilanes and their subsequent characterization. Surface treatments were carried out after removing the original sizing applied by manufacturer and pretreating them with an activation process of surface silanol regeneration. Different samples were considered to make convenient comparisons: as received fibers (commercial), calcinated fibers (without commercial sizing), activated samples (calcinated fibers subjected to an acid process for hydroxyl regeneration), and silanized fibers with -aminopropiltriethoxysilane, - aminopropilmethyldiethoxysilane and a mixture of 50% by weight of both silanes. A deep characterization was carried out in terms of structure using X-ray diffraction, XRD, and Fourier transform infrared spectroscopy, FTIR, thermal properties by thermogravimetric analysis, TGA, coupled with single differential thermal analysis, SDTA, and morphology by scanning electron microscopy, SEM, and atomic force microscopy, AFM.

Surface modification and characterization of basalt fibers as potential reinforcement of concretes / Iorio, Morena; Santarelli, Maria Laura; González-gaitano, G.; González-benito, J.. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - 427:(2018), pp. 1248-1256. [10.1016/j.apsusc.2017.08.196]

Surface modification and characterization of basalt fibers as potential reinforcement of concretes

Iorio Morena;Maria Laura Santarelli;
2018

Abstract

Basalt fibers were surface treated with silane coupling agents as a method to enhance the adhesion and durability of fiber-matrix interfaces in concrete based composite materials. In particular, this work has been focused on the study of basalt fibers chemical coatings with aminosilanes and their subsequent characterization. Surface treatments were carried out after removing the original sizing applied by manufacturer and pretreating them with an activation process of surface silanol regeneration. Different samples were considered to make convenient comparisons: as received fibers (commercial), calcinated fibers (without commercial sizing), activated samples (calcinated fibers subjected to an acid process for hydroxyl regeneration), and silanized fibers with -aminopropiltriethoxysilane, - aminopropilmethyldiethoxysilane and a mixture of 50% by weight of both silanes. A deep characterization was carried out in terms of structure using X-ray diffraction, XRD, and Fourier transform infrared spectroscopy, FTIR, thermal properties by thermogravimetric analysis, TGA, coupled with single differential thermal analysis, SDTA, and morphology by scanning electron microscopy, SEM, and atomic force microscopy, AFM.
2018
basalt fibers; silane coupling agents; surface treatments
01 Pubblicazione su rivista::01a Articolo in rivista
Surface modification and characterization of basalt fibers as potential reinforcement of concretes / Iorio, Morena; Santarelli, Maria Laura; González-gaitano, G.; González-benito, J.. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - 427:(2018), pp. 1248-1256. [10.1016/j.apsusc.2017.08.196]
File allegati a questo prodotto
File Dimensione Formato  
Iorio_Surface-modification-characterization_2018.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 2.55 MB
Formato Adobe PDF
2.55 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1019567
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 61
  • ???jsp.display-item.citation.isi??? 57
social impact