PSI - Issue 73

Robert Jurczak et al. / Procedia Structural Integrity 73 (2025) 45–50 Robert Jurczak/ Structural Integrity Procedia 00 (2025) 000–000

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3. Results of mastic asphalt mixture and discussion The results of the flexural strength tests of the prismatic beams representing the bond between old and new mastic asphalt, both with and without self-adhesive bitumen tape are presented in Table 1.

Table 1. Flexural strength test results at -2 o C and -10 o C.

Preparation of beam specimens

Specimen No.

Flexural strength at [MPa]

reference

without the tape

with tape

1 2 3 4 5 6 1 2 3 4 5 6

11,6 11,1 10,2 11,4 10,4 11,6 13,4 14,3 13,5 14,1 12,9 13,5

4,5 4,4 4,4 4,5 4,1 4,0 5,5 5,2 5,0 5,4 4,9 5,4

5,1 5,0 5,0 4,5 4,9 4,7 5,3 5,3 6,2 5,4 5,6 5,5

-2 o C

-10 o C

A comparison of the flexural strength test results for joints between old and new mastic asphalt – both with and without the use of self-adhesive tape – as well as for monolithic beams, is presented in Figure 2.

Fig. 2. Flexural strength comparison based on specimen preparation method (error bars show standard deviation).