PSI - Issue 81

Orest Polishchuk et al. / Procedia Structural Integrity 81 (2026) 316–320

318

determination of corrosion resistance was carried out in accordance with the methodology of DSTU B GOST 27677:2011 “Corrosion protection in construction. Concretes. General requirements for testing” . This method allows not only for a quantitative evaluation of strength changes but also for visual observation of the corrosion induced cracking process in the samples. Combined with strength testing, it enables a more accurate characterization of concrete behavior under aggressive conditions. The tests were conducted in environments simulating different types of corrosion: • acid environment (pH = 3), • alkaline environment (pH = 13), • kerosene (pH = 5).

a

b

Fig. 1. (a) polypropylene fiber; (b) steel anchor fiber.

Table 1. Compositions of tested concrete mixtures. Mixture composition, kg/m3 № CEM I CEM ІІ

Sand Crushed stone

SP

PFs

SFs

water

w/c

1 2 3 4 5 6

300 300 300

0 0 0

829 827 807 807 827 829

1200 1200 1200 1200 1200 1200

1.86 1.95 2.01 1.89 1.98 2.04

0 1 1 0 1 1

0 0

135 135 135 135 135 135

0.45 0.45 0.45 0.45 0.45 0.45

60

0 0 0

300 300 300

0 0

60

Fig. 2. Testing of cubic specimens.