Properties of Self-Compacting Concrete Incorporating Rubber and Expanded Clay Aggregates

Abstract:

Self-Compacting Concrete (SCC) incorporating a blend of normal aggregate and waste rubber or expanded clay aggregate were prepared in present paper. And then the properties of SCC incorporating combined aggregates in fresh state and hardened state, including workability, dynamic elastic modulus, compressive strength and chloride ion permeability were investigated by experiments. Results indicate that utilization of rubber particles as a fine aggregate or expanded clay particles as a coarse aggregate by partially replacing sand or coarse aggregate of the same volume can successfully produce the SCC with suitable workability. The addition of rubber or expanded clay particles results in a remarkable reduction of mechanical strength and dynamic elastic modulus of SCC. And the compressive strength and dynamic elastic modulus of SCC with expanded clay aggregate replacing coarse aggregate is higher than that of SCC with the same volume rubber replacing sand. The incorporation of rubber or expanded clay aggregate in concrete exhibits a reduction in chloride ion permeability as compared to normal concrete. It is of great importance for further understanding the effect of waste rubber and expanded clay aggregate on workability, mechanical properties and durability of SCC.

• Periodical: Key Engineering Materials (Volumes 629-630)
• Pages: 417-424
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.629-630.417
• Online since: October 2014
• Authors: Ning Li, Guang Cheng Long*, Si Si Zhang
• Keywords: Compressive Strength, Dynamic Elastic Modulus, Expanded Clay, Self-Compacting Concrete, Waste Rubber Particles, Workability

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