Journal of Engineering Research
Abstract
Some researchers studied the effect of different types of fibers on the strengths of concrete at elevated temperature. However, there are some limitations in the study of the strengths of concrete using different methods of cooling after elevated temperature. Thus, the main objective of this research is to study the mechanical properties of concrete with the addition of 1% polypropylene fibers, featuring different structures, at elevated temperatures and with various cooling methods, compared to normal concrete. An experimental program using three different series of mixes, the first series included normal concrete (control) mix without fibers, the second series included 1% monofilament polypropylene fibers, and the third series included 1% multifilament polypropylene fibers. Each series included one mix with 350 kg/m3 cement content of CEMI 42.5 type. Various tests including compressive, split tensile and flexural strength. The tests were carried out on 126 samples consisting of 45 no. of cube, 45 no. of cylinders and 36 no. of beams. The strengths and cooling method were the main variables examined in this research. It was observed from the results that mixes with multifilament polypropylene fibers had much better performance at cooling down gradually by air and recorded higher strengths.
Recommended Citation
Hanafy, Nourhan Osama Dr
(2024)
"Effect of Addition Monofilament and Multifilament Polypropylene Fibers on Mechanical Properties of Concrete at Elevated Temperatures,"
Journal of Engineering Research: Vol. 8:
Iss.
4, Article 8.
Available at:
https://digitalcommons.aaru.edu.jo/erjeng/vol8/iss4/8