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Fiber reinforced composites represent an alternative to traditional techniques for strengthening and retrofitting masonry structures. Within the growing environmental awareness, the development of composite materials to replace conventional synthetic fibers and polymeric matrices has become a crucial issue. In this paper, a novel sustainable composite material consisting in hemp fibers and a natural matrix made of a mix of ground clay bricks and organic binder is proposed. Experimental tests are carried out in order to estimate the mechanical characteristics of the single composite components. The structural performance of polycentric masonry arches strengthened at the extrados first with only natural matrix and then with the bio-composite material (i.e. hemp fibers and biodegradable matrix) is investigated. Single point vertical load tests and tilt tests are carried out in order to assess the effectiveness of the strengthening by comparing the results with those obtained with unstrengthened masonry arches.

A novel hemp-fiber bio-composite material for strengthening of arched structures: Experimental investigation

Caponero M. A.;
2021-01-01

Abstract

Fiber reinforced composites represent an alternative to traditional techniques for strengthening and retrofitting masonry structures. Within the growing environmental awareness, the development of composite materials to replace conventional synthetic fibers and polymeric matrices has become a crucial issue. In this paper, a novel sustainable composite material consisting in hemp fibers and a natural matrix made of a mix of ground clay bricks and organic binder is proposed. Experimental tests are carried out in order to estimate the mechanical characteristics of the single composite components. The structural performance of polycentric masonry arches strengthened at the extrados first with only natural matrix and then with the bio-composite material (i.e. hemp fibers and biodegradable matrix) is investigated. Single point vertical load tests and tilt tests are carried out in order to assess the effectiveness of the strengthening by comparing the results with those obtained with unstrengthened masonry arches.
2021
Bio-composite material
Hemp fiber
Masonry arch
Mechanical testing
Single point vertical load test
Structural strengthening
Tilt test
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/60569
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