Mechanical properties and resistance to chloride ion permeability of epoxy emulsion cement mortar reinforced by glass flake. (30th November 2017)

• Record Type: Journal Article
• Authors: Zuo, Jiandong; Li, Huabing; Dong, Biqin; Luo, Chaoyun; Chen, Dazhu
• Is Part Of: Construction & building materials. Volume 155(2017)
• Page Start: 137
• Page End: 144
• Publication Date: 2017-11-30
• Subjects: Glass flake -- Epoxy emulsion cement mortar -- Resistance to chloride ion permeability; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2017.07.162
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Glass flake could improve the flexural strength and fracture toughness of modified mortar. Glass flake made the water absorption of mortar reduce by about 39.8%. 120 mesh glass flake reduced chloride diffusion coefficient of mortar by about 48.2%. The bridging connection effect and hinder effect of glass flake was the reason for the improvement. Abstract: There is a higher demand for the resistance of chloride ion of the buildings in coastal environment. In this paper, glass flake was used to improve the mechanical properties and chloride ion permeability resistance of epoxy emulsion cement mortar. The effects of polymer/cement ratio (P/C), glass flake content (glass flake/cement ratio) and size of glass flake on the properties of modified mortar were studied. The results indicated that glass flake could simultaneously improve the mechanical properties and chloride ion permeability resistance of epoxy emulsion cement mortar. The flexural strength of modified mortar was improved by 20.4% by incorporation of 120 mesh glass flake. More significantly, water absorption and chloride diffusion coefficient of modified mortar reduced by 39.8% and 48.2%, respectively. The morphology of samples observed by scanning electron microscopy (SEM) confirmed the effect of bridging connection and barrier action of glass flake on epoxy emulsion cement mortar.