Akademik Veri Yönetim Sistemi
4th International Civil Engineering & Architecture Conference, Trabzon, Türkiye, 17 - 19 Mayıs 2025, cilt.1, ss.1448-1455, (Tam Metin Bildiri)
Plastic waste, which is consumed in significant
amounts today, by using it in building materials such as concrete or mortar
stands out as an effective solution as it offers significant advantages both
economically and ecologically. In addition, basalt fiber (BF) are generally
used in engineering structures in order to minimize the negative effects that
may be caused by other factors. In this scope, in this study, some properties
of mortars containing basalt fiber and different proportions of plastic waste aggregate
(PWA) were investigated exposed to high temperatures. The mixtures were varied according to two
basic parameters: plastic PWA replacement ratio by volume (0%, 10% and 20%) and
BF addition amount (0%, 0.25% and 0.50%). In the experimental study, 40x40x40 mm and 40x40x160 mm mortar specimens
produced. The specimens exposed to 400°C, 600°C and 800°C. Residual compressive
strength, flexural strength, mass loss, crack width-image processing
relationship analysis tests performed on the specimens. The results showed that
the use of PWA decreased both compressive strength and weight loss. In
all mixtures, the flexural strength tended to decrease as the plastic aggregate
ratio increased, regardless of basalt fiber. BF additive limited strength losses and maintained structural integrity,
especially at elevated temperatures. Crack widths reached approximately
0.15 mm at 600°C and increased up to 0.25 mm at 800°C, which caused serious
deterioration in the microstructural integrity of the material and accelerated
strength loss.