Publication: Reinforcement-matrix interactions and their consequences on the mechanical behavior of basalt fibers-cement composites
Loading...
Identifiers
Publication date
2021-11-22
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Impact
Export
Abstract
In order to prepare basalt fibers-reinforced cement-based mortars with higher compatibility between reinforcement and matrix, basalt fibers with new surface treatments (sizing) were studied looking for enhanced interaction at the interphase between basalt fibers and cement matrix. As-received, calcinated, activated and silanized (by three silane aqueous solutions: i) aminopropyltriethoxysilane, APTES; ii) ¿-aminopropylmethyldiethoxysilane, APDES and iii) a mixture APTES APDES 50% by weight) basalt fibers were dispersed in Portland cement matrix. Performances of the composites were evaluated by mechanical tests. Final correlation between the fibers surface characteristics and mechanical performance was carried out considering the induced microstructural changes and adhesion at the interface. Fractographic analysis by SEM and laser and optical profilometry were performed. A clear improvement in mechanical properties was obtained when basalt fibers were dispersed in cement matrix. Results suggest that better behavior is achieved when basalt fibers modified with a complex mixture of silanes are dispersed in cement matrix.
Description
Keywords
Basalt fibers, Cement matrix, Interphases, Surface treatments
Bibliographic citation
Iorio, M., Marra, F., Santarelli, M., & González-Benito, J. (2021). Reinforcement-matrix interactions and their consequences on the mechanical behavior of basalt fibers-cement composites. Construction and Building Materials, 309, 125103.