Stability of Curvilinear Masonry

Ciblac, Thierry; Morel, Jean‐Claude

doi:10.1002/9781119003564.ch10

Cited by 1 publication

(3 citation statements)

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“…The higher cellulose content of the kenaf from Burkina Faso ( Table 2 ) may be the reason why the mechanical characteristics of the fibers are higher than those of fibers of other origins. It should not be forgotten that, in the context of local materials, it is always necessary to test the materials to assess their performance [ 19 ], because of the variability of their composition depending on the soil, climate and plant species.…”

Section: Resultsmentioning

confidence: 99%

“…This assumption enabled the stress to be calculated from the force measured by the press sensor. The details of the procedure are given elsewhere [ 19 , 20 , 21 ].…”

Section: Materials and Testing Proceduresmentioning

confidence: 99%

“…As it was difficult to assess small strains at the beginning of the test, it was decided to work in cycles to measure the elasticity modulus. The procedure is not a standard one but details are given elsewhere [ 19 , 20 , 21 , 22 , 23 ].…”

Section: Materials and Testing Proceduresmentioning

confidence: 99%

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How Properties of Kenaf Fibers from Burkina Faso Contribute to the Reinforcement of Earth Blocks

et al. 2015

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Physicochemical characteristics of Hibiscus cannabinus (kenaf) fibers from Burkina Faso were studied using X-ray diffraction (XRD), infrared spectroscopy, thermal gravimetric analysis (TGA), chemical analysis and video microscopy. Kenaf fibers (3 cm long) were used to reinforce earth blocks, and the mechanical properties of reinforced blocks, with fiber contents ranging from 0.2 to 0.8 wt%, were investigated. The fibers were mainly composed of cellulose type I (70.4 wt%), hemicelluloses (18.9 wt%) and lignin (3 wt%) and were characterized by high tensile strength (1 ± 0.25 GPa) and Young’s modulus (136 ± 25 GPa), linked to their high cellulose content. The incorporation of short fibers of kenaf reduced the propagation of cracks in the blocks, through the good adherence of fibers to the clay matrix, and therefore improved their mechanical properties. Fiber incorporation was particularly beneficial for the bending strength of earth blocks because it reinforces these blocks after the failure of soil matrix observed for unreinforced blocks. Blocks reinforced with such fibers had a ductile tensile behavior that made them better building materials for masonry structures than unreinforced blocks.

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Section: Resultsmentioning

confidence: 99%

“…This assumption enabled the stress to be calculated from the force measured by the press sensor. The details of the procedure are given elsewhere [ 19 , 20 , 21 ].…”

Section: Materials and Testing Proceduresmentioning

confidence: 99%