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A platform for research: civil engineering, architecture and urbanism
Mechanical and dynamic properties of self-compacting crumb rubber modified concrete
Highlights ► Adding rubber to self-compacting concrete deteriorated the mechanical properties. ► SCRC can be used as a structural concrete in civil engineering applications. ► Considerable enhancement observed in flexural toughness with rubber addition. ► SCRC is suitable when dynamic response and vibration damping are a priority.
Abstract In this study, the mechanical and dynamic properties of Self-Compacting Rubberised Concrete (SCRC) were experimentally investigated. Crumb rubber from scrap tyres was used as a partial replacement for Fine Aggregate (FA), Coarse Aggregate (CA) and combined Fine and Coarse Aggregate (FCA) at 5, 10, and 15wt% proportions. Incorporating rubber aggregates generally has a detrimental effect on the mechanical strength, but gives improved strain capacity resulting in significant reductions in the flexural Crack Mouth Open Displacement (CMOD), compared to the reference mix. Structural grade SCRC (fc >17MPa; ρ >2000kg/m3) can be obtained with up to ∼260kg/m3 (equivalent to 15wt%) in all forms of crumb rubber aggregate substitution. The Dynamic Modulus and Ultrasonic Pulse Velocity decreased as the proportion of rubber substitution was increased, however SCRC has superior vibration damping behaviour in all cases with up to 230% enhancement in damping ratio and damping coefficient for the CR 15wt% mix.
Mechanical and dynamic properties of self-compacting crumb rubber modified concrete
Highlights ► Adding rubber to self-compacting concrete deteriorated the mechanical properties. ► SCRC can be used as a structural concrete in civil engineering applications. ► Considerable enhancement observed in flexural toughness with rubber addition. ► SCRC is suitable when dynamic response and vibration damping are a priority.
Abstract In this study, the mechanical and dynamic properties of Self-Compacting Rubberised Concrete (SCRC) were experimentally investigated. Crumb rubber from scrap tyres was used as a partial replacement for Fine Aggregate (FA), Coarse Aggregate (CA) and combined Fine and Coarse Aggregate (FCA) at 5, 10, and 15wt% proportions. Incorporating rubber aggregates generally has a detrimental effect on the mechanical strength, but gives improved strain capacity resulting in significant reductions in the flexural Crack Mouth Open Displacement (CMOD), compared to the reference mix. Structural grade SCRC (fc >17MPa; ρ >2000kg/m3) can be obtained with up to ∼260kg/m3 (equivalent to 15wt%) in all forms of crumb rubber aggregate substitution. The Dynamic Modulus and Ultrasonic Pulse Velocity decreased as the proportion of rubber substitution was increased, however SCRC has superior vibration damping behaviour in all cases with up to 230% enhancement in damping ratio and damping coefficient for the CR 15wt% mix.
Mechanical and dynamic properties of self-compacting crumb rubber modified concrete
Najim, Khalid B. (author) / Hall, Matthew R. (author)
Construction and Building Materials ; 27 ; 521-530
2011-07-18
10 pages
Article (Journal)
Electronic Resource
English
Mechanical and dynamic properties of self-compacting crumb rubber modified concrete
| British Library Online Contents | 2012
Mechanical and dynamic properties of self-compacting crumb rubber modified concrete
| Online Contents | 2012