Experimental tests for the characterization of sisal fiber reinforced cementitious matrix for strengthening masonry structures

Abstract

The experimental characterization of a Natural Fiber Reinforced Cementitious Matrix (NFRCM), made of sisal fibers yarns impregnated with a water-based resin and embedded in a inorganic matrix based on natural lime, is presented in the paper. The Sisal-NFRCM performances are investigated through tensile and single-lap shear tests, adopting the dispositions of the Round Robin Tests developed for the FRCM characterization by the RILEM Technical Committee 250-CSM. The tensile stress-strain curve evidenced the tension stiffening effect of the mortar between cracks, which tended progressively to reduce. In shear tests, the failure and the progressive slippage of the sisal yarns was observed.

Fabrication and Characterization of Microcellular Polyurethane Sisal Biocomposites

“…Over the past few decades, polymers have substituted for several types of metals in different applications. This can be attributed to the advantages polymers and polymer composites offer over conventional materials [1][2][3]. For example, bending restrictors (cable support products) were originally made of steel, however, steel tends to be heavy and expensive, and it will corrode.…”

Mechanics and durability of lime-based textile reinforced mortars

“…Micro-modelling approaches, in which all the constituents of masonry (brick and mortar) and TRM composites (textile and mortar), and the interactions between them are modelled individually [46][47], allow detailed understanding of the mechanisms governing the nonlinear response of the component under investigation. These models can also be used for development of average macro-damage models for investigation of the mechanical response at structural scale as direct application of micro-modelling at structural scale can be computationally very expensive.…”

“…Effectiveness of natural-based TRMs in enhancing the structural performance of masonry has also recently been the subject of few studies, see e.g. [45,46]. With the urgent need for lowering the carbon footprint of the constructions, it is expected that natural-based TRMs receive a more extensive attention, especially with focus on innovative ways to enhance the durability of these composites, in the coming years.…”

Mechanical Response and Analysis of Cracking Process in Hybrid TRM Composites with Flax Textile and Curauá Fibres

“…To this purpose, the mechanical behaviour of NTRMs was experimentally assessed by considering several types of fibres, such as sisal [ 13 , 14 ], flax [ 15 , 16 , 17 ], jute [ 18 , 19 ], coir, hemp [ 20 ] and cotton. Applications were also carried out on a larger scale of analysis by the assessment of the efficiency of NTRMs in improving the capacity of masonry walls subjected to horizontal forces, both in-plane and out-of-plane [ 21 , 22 , 23 , 24 ].…”