Crumb Rubber Recycling in Enhancing Damping Properties of Concrete

International Conference on Advances in Materials and Manufacturing Applications 2017

Sugapriya, P.^1 ; Ramkrishnan, R.^1

Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Coimbatore, India^1

关键词: Damping property;    Fine aggregates;    Ground granulated blast furnace slag;    Micro-structural;    Number of waves;    Partial replacement;    Rubberized concrete;    Strength property;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012013/pdf
DOI  :  10.1088/1757-899X/310/1/012013

来源: IOP

【 摘 要 】

Damping plays a major role in the design of roadside structures that gets affected due to vibrations transmitted from moving traffic. In this study, fine aggregates were partially replaced with crumb rubber in concrete, at varying percentages of 5, 10, 15 and 20% by weight. Three different sets of concrete, mixed with crumb rubber were prepared using raw rubber, treated rubber and treated rubber with partial replacement of cement. Cement was partially replaced with Ultra-Fine Ground Granulated Blast furnace Slag (UFGGBS) for this study. Samples were cast, cured and tested for various properties on the 7thand 28thday. The damping ratio and frequency of the peak value from a number of waves in rubber incorporated beams were found out using a FFT Analyser along with its Strength, Damping and Sorptivity characteristics. SEM analysis was conducted to analyse the micro structural bonding between rubber and concrete. The mode shapes of pavement slabs were modelled and analysed using a FEM tool, ANSYS. From the results, the behaviour of the three sets of rubberized concrete were compared and analysed, and an optimum percentage for crumb rubber and UFGGBS was proposed to achieve best possible damping without compromising the strength properties.