An experimental study was conducted to examine the mechanical strengths of concretes with straight high-strength knurled polypropylene macrofibers. Incidences concrete were determined for three different fiber dosages and lengths. In addition, compressive, indirect-splitting-test tensile, flexural through testing. The results showed no statistically significant correlation between volume length...

Knowledge of the mechanisms controlling crack formation, propagation and failure of FRCC under shear loading is currently limited. This paper presents a study that utilized photogrammetry to monitor the shear deformations of two FRCC materials and ordinary concrete (OC). Multiple shear cracks and strain hardening of both FRCC materials was observed under shear loading. The influence of fibers, ...

In this paper we investigate the transient shear rheology of a polypropylene containing long fibers (2.75 to 11 mm, L/D > 150) and short fibers (1 mm, L/D < 50). The objectives of this work are to determine the relationship between stress growth and relaxation behavior of fiber orientation and determine the feasibility of extending Doi’s theory for the rheology of rod-like molecules to fiber re...

A novel approach based on the use of nanometallic-decorated hollow fibers to assist electromembrane extraction is proposed. Microporous polypropylene hollow fibers, on which nanometallic silver was deposited, have been used for the first time as liquid membrane support in electromembrane extraction (EME). Different methods for the generation/deposition of silver nanoparticles (AgNPs) were studi...

Despite being strong under compression, concrete is rather weak when subjected to tensile stress. Concrete has been reinforced with a variety of materials over time in order resist stresses. Among various types fibers, polypropylene fiber, which available range sizes, used strengthen concrete. The fiber also increases the concrete’s toughness, durability, and low permeability. Polypropylene fib...

The construction sector is one of the main consumers raw materials and generates a high volume waste within European Union. search for new that are more sustainable respectful environment has become challenge countries with degree industrialization. In this work, study most relevant properties masonry mortars made recycled aggregates reinforced synthetic fibers was carried out. Three types were...