Polypropylene fibers subjected to exposure

The article presents the characteristics and selected application areas of polypropylene fibers used, among other things, as a technological solution to reduce the risk of thermal spalling of concrete exposed to temperatures occurring during a fire. An analysis of selected combustible properties of three types of polypropylene (PP) fibers used as an additive to concrete mixes is also included. Strength tests were conducted to analyze the impact of high temperatures occurring during a fire on the strength of fiber-reinforced concrete with polypropylene fibers and to estimate the magnitude of the decrease in compressive strength compared to concrete of the same class without the addition of fibers.„SELECTED FIELDS OF APPLICATION OF FIBRES REINFORCED
CONCRETE WITH POLYPROPYLENE FIBRES SUBJECT TO HIGH
TEMPERATURE”
This paper presents specification and fields of application of polypropylene fibers, used among the others as a technological solution limiting risk of concrete thermal spalling, subject to high temperatures during the fire. Analysis of the selected combustible properties of three types of polypropylene fibers (PP) applied as an additive for the concrete mix is discussed. Strength studies were conducted in order to analyze the influence of the high temperatures occurring during the fire on the strength of fibers reinforced concrete with polypropylene fibers, and to estimate the decrease in compressive strength compared to the concrete of the same class without the addition of fibers. (…)