PSI - Issue 72

Ivelina Ivanova et al. / Procedia Structural Integrity 72 (2025) 338–344

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b)

Fig. 3. Tensile tests on hemp fiber materials, (a)One hemp fiber, (b)Hemp fiber fabric

Mechanical characterization tests of mortar specimens Three-point bending tests at 28 days allowed the measurement of an average bending resistance for each series of specimens. The test setup is illustrated in Fig. 4a. The bending tests were carried out for the prismatic test specimens (geometry of prismatic specimens with dimensions 40×40×160 mm 3 made of mortars, see Fig.4b) using a hydraulic press. The load was applied at the middle of the specimens with a span length of 100mm. For each type of series all tests were accomplished on three identical specimens.

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b)

Fig. 4. Loading device, a) Three-point bending tests (ITheMM laboratory) b) Dimensions of specimen,

3. Experimental results 3.1. Influence of fiber fabric under tensile test A comparison of the mechanical behavior of a tensile test between hemp fiber and hemp fiber fabric is presented in Fig. 5. Both behaviors are similar until failure.

Fig. 5. Mechanic behavior of one fiber and fabric hemp