Microstructure and Finite Element Analysis of Recycled Aggregate Concrete

Hai Feng Yang; Zhi Heng Deng; Yue Feng Hu

doi:10.4028/www.scientific.net/AMM.357-360.1383

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 357-360Microstructure and Finite Element Analysis of...

Microstructure and Finite Element Analysis of Recycled Aggregate Concrete

Abstract:

In order to study the mechanistic differences between recycled aggregate concrete (RAC)and normal aggregate concrete(NAC), the magnifier and scanning electron microscope were used to observe the meso-interfacial structure and microstructure of interfacial transition zone morphology of the RAC respectively, and analysed differences between RAC and NAC; Secondly, the finite element software ABAQUS was used to simulation the simplified model of RAC. The above analysis results show that, there existe a transition zone in the interface, the aggregate-new mortar interface as well as the new-old mortar interface has been obvious cracks before loading, this part is the weak link of RAC ;After loading, the crack occurs first in the old interface, then appeared at the new interface, and then develop to the old mortar, finally, there formed a through crack.

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Periodical:

Applied Mechanics and Materials (Volumes 357-360)

Pages:

1383-1388

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.357-360.1383

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Online since:

August 2013

Authors:

Hai Feng Yang, Zhi Heng Deng, Yue Feng Hu

Keywords:

Finite Element Analysis (FEA), Interface Structure, Microstructure, RAC

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