Experimental evaluation on behavior of poly propylene fiber-reinforced concrete containing Poly Carboxylate Ether and E205 additives

Abstract

Corrosion is a critical challenge that reinforced concretes are facing that need to be addressed considering environmental circumscriptions. This research investigates various characteristics of polypropylene fiber-reinforced concrete experimentally. Six contents of chemical admixtures are investigated regarding rapid chloride permeability, water absorption, electrical resistivity, and compressive strength. Moreover, quantitatively, the energy-dispersive X-ray microanalysis is employed to specify the cementitious matrix’s chemical compositions. Correspondingly, the cementitious matrix’s chemical mechanism is analyzed by utilizing X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and X-ray Fluorescence (XRF) analysis methods. The results indicate that a minor increment in the content of chemical admixtures decreases chloride permeability, while an increase results in an electrical resistivity up urge. Furthermore, the experimental results demonstrate that specimens with polypropylene fiber and polycarboxylate ether perform better than specimens containing polypropylene fiber and E205 in compressive strength. It has been discovered that specimens, including Poly Carboxylate Ether, demonstrated lower water absorption than the levels observed in specimens with E205. According to test results, it can be concluded that the durability and compressive strength of fiber reinforced concrete with polypropylene fibers are increased by the addition of chemical admixtures. • Adding polycarboxylate ether and E 205 to PPFRC, increases the concrete’s resistance. • Polycarboxylate ether and E205 reduce cracks in PPFRC. • Adding polycarboxylate ether and E205 to PPFRC reduces concrete water absorption.