Experimental and analytical evaluation of rubberized polymer concrete

Jafari, K ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.conbuildmat.2017.08.097
  3. Abstract:
  4. Polymer concrete (PC) has been widely used for quick repairing of concrete pavement and structures in recent years. This paper studies the mechanical behavior of the rubberized polymer concrete. Crumb and chipped rubber were used to replace fine and coarse aggregates in PC, respectively. A complete series of destructive tests including impact test, compression and splitting tensile tests and non-destructive methods including ultrasonic test, digital signal processing, electrical conductivity, and microstructure analysis was performed to demonstrate the various potential applications of the rubberized PC. X-ray diffraction (XRD) also provided information regarding the chemical composition and crystal structure of three different epoxy resin ratios. The results indicated that the rubberized PC reduced the workability and increased the porosity and air content of the mixture; however, reduced the cost and density, and improved ductility. Scanning electron microscope was used to analyze the interface between aggregates and adhesive materials. The correlation between the compressive strength and ultrasonic pulse velocity was determined and proposed for the rubberized PC. PC containing crumb rubber had a lower pulse velocity and higher damping properties than that of chipped rubber. Further, the Taguchi method was used to determine the optimum conditions for mechanical properties of the rubberized PC and ANOVA was then utilized to evaluate the level of influence and existence of interaction parameters. Based on this investigation, the rubberized PC can be an appropriate candidate for repair and rehabilitation applications. © 2017 Elsevier Ltd
  5. Keywords:
  6. Destructive tests and nondestructive methods ; Rubberized polymer concrete ; Statistical analysis ; Aggregates ; Compressive strength ; Concretes ; Crystal structure ; Digital signal processing ; Epoxy resins ; Interfaces (materials) ; Light velocity ; Mechanical properties ; Nondestructive examination ; Polymers ; Repair ; Rubber ; Scanning electron microscopy ; Signal processing ; Statistical methods ; Taguchi methods ; Tensile testing ; X ray diffraction ; Electrical conductivity ; Interaction parameters ; Microstructure analysis ; Nondestructive methods ; Polymer concretes ; Repair and rehabilitations ; Splitting tensile tests ; Ultrasonic pulse velocity ; Ultrasonic testing
  7. Source: Construction and Building Materials ; Volume 155 , 2017 , Pages 495-510 ; 09500618 (ISSN)
  8. URL: https://www.sciencedirect.com/science/article/pii/S0950061817316987