compatibility of ultra high performance concrete as repair material

Transversal frequency (Hz)25502500245024002350230022500 50 100 150 200 250 300Freeze-thaw cyclesGr 300 FT (1)Gr 300 FT (2)Gr 300 FT (3)Ch 300 FT (1)Ch 300 FT (2)Ch 300 FT (3)Br 300 FT (1)Br 300 FT (2)Br 300 FT (3)Sm 300 FT (1)Sm 300 FT (2)Sm 300 FT (3)Sb 300 FT (1)Sb 300 FT (2)Sb 300 FT (3)Figure 4.2 Fundamental transverse frequency of composite samples, cast in wetting conditions, subjected to 300freeze-thaw cyclesFigure 4.3 shows the RDM considering that the initial transverse frequency is at 33cycles. All specimens had higher RDM’s than at the beginning of testing, suggesting thatthe samples did not suffer any deterioration at all.Relative Dynamic Modulus (%)1151131111091071051031019997950 50 100 150 200 250 300Freeze-thaw cyclesGr 300 FT (1)Gr 300 FT (2)Gr 300 FT (3)Ch 300 FT (1)Ch 300 FT (2)Ch 300 FT (3)Br 300 FT (1)Br 300 FT (2)Br 300 FT (3)Sm 300 FT (1)Sm 300 FT (2)Sm 300 FT (3)Sb 300 FT (1)Sb 300 FT (2)Sb 300 FT (3)Figure 4.3 Relative Dynamic Modulus of composite samples, cast in wetting conditions, subjected to 300 freezethawcyclesFigure 4.4, Figure 4.5 and Figure 4.6 show the variation of weight, the evolution of thetransversal frequency and the increase of the RDM, respectively, of the NSC specimensthat were subjected to 300 freeze-thaw cycles. All of them show a similar behavior as thatof the composite specimens: the exposure to repetitive freeze-thaw cycling did notdeteriorate the specimens at all. This might be explained due to the fact that the NSC72