However, a significant increase of compressive strength of CSEB caused by the addition of cement has been observed; moreover, the compressive strength of CSEB increases with increasing cement content.
The use of the toughened resin system results in a significant increase of joint strength.
Pozzolanicity of pumice strictly influences the mechanical properties with a significant increase of compressive strength after 28 days of curing.
The evaluation of the mechanical properties gave a significant increase of the strength and stiffness of composites with the percentage of flax strands.
Tensile test indicates that toughness has been enhanced at least 7 times after being annealed in parallel with significant increase of tensile strength.
Results obtained in this study show that, unlike glass beams, in glass GFRP composite beams it is possible to obtain relatively ductile failure modes, with a significant increase of both strength and deformation capacity after the initial cracking of glass.
A significant increase of tensile strength was observed in all extract-treated groups (21.20 ± 2.24, 21.26 ± 1.77, 19.72 ± 0.84 and 21.05 ± 1.90 N/cm for HexE, EtAcE, MeE and AqE, respectively) compared to the vehicle-treated group.
With glutaraldehyde, only guanidine pre-treatment led to a significant increase of adhesive strength (55 kPa compared to 20 kPa for the group with no pre-treatment; Figure 4a).
