Permeability of Anti-Chloride Ion of Fly Ash Recycled Concrete

Abstract:

Adding fly ash to recycled concrete with super-substitute technique, comparing the 28d strength of fly ash recycled concrete(FARC) with the 28d strength of ordinary recycled concrete(ORC), the compressive strength of fly ash recycled concrete slightly decreased with the increase of the fly ash and the admixture of renewable aggregate. Along with the increase of mixing amount of the air entraining and water-reducing agent, the compressive strength of fly ash recycled concrete tends to reduce. The order of the factors that affect the chloride ion diffusion coefficient of recycled concrete is fly ash admixture→mixing amount of the air entraining and water-reducing agent→admixture of recycled coarse aggregate→polypropylene fibre admixture, which provides a basis for the application of recycled concrete engineering in the environment which is affected by chlorine salt in the north frigid area .

• Periodical: Advanced Materials Research (Volumes 317-319)
• Pages: 544-547
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.317-319.544
• Online since: August 2011
• Authors: Ai Jiu Chen, Jing Wang, Zhan Fang Ge, Ming Wu
• Keywords: Diffusion Coefficient, Fly Ash (FA), Recycled Concrete (RC)

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