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Author:

Wang, C. (Wang, C..) | Chazallon, C. (Chazallon, C..) | Hornych, P. (Hornych, P..) | Jing, P. (Jing, P..) | Mouhoubi, S. (Mouhoubi, S..)

Indexed by:

CPCI-S

Abstract:

It is known that the strength and stiffness of unbound base and subbase layers prepared with recycled concrete aggregates (RCA) increase over time, known as self-cementing properties of RCA. However, the influence of self-cementing properties on the permanent and resilient deformation behavior has not been thoroughly studied. In this study, the permanent and resilient deformation behavior of two RCA, ORCA and NRCA (old and fresh crushed RCA), after different curing times (1, 180, 360, and 720 days), were investigated by conducting a series of repeated load triaxial tests. The results show that the permanent deformation of NRCA, crushed recently, decreases to a negligible value after curing 180 days, and then reaches a constant value. While the resilient modulus of NRCA increases steadily with curing time till the studied curing time (720 days). Besides, the long-term storage reduces the self-cementing properties of ORCA. As a result, the negligible self-cementing properties have no influence on the permanent and resilient deformation behavior of ORCA.

Keyword:

permanent deformation unbound granular materials repeated load triaxial test self-cementing properties recycled concrete aggregates resilient modulus

Author Community:

  • [ 1 ] [Wang, C.]Univ Strasbourg, CNRS, INSA Strasbourg, ICube,UMR 7357, Strasbourg, France
  • [ 2 ] [Chazallon, C.]Univ Strasbourg, CNRS, INSA Strasbourg, ICube,UMR 7357, Strasbourg, France
  • [ 3 ] [Mouhoubi, S.]Univ Strasbourg, CNRS, INSA Strasbourg, ICube,UMR 7357, Strasbourg, France
  • [ 4 ] [Hornych, P.]Gustave Eiffel Univ, MAST LAMES, Nantes Campus, Bouguenais, France
  • [ 5 ] [Jing, P.]Beijing Univ Technol, Coll Metropolitan Transportat, Beijing, Peoples R China

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Source :

13TH INTERNATIONAL CONFERENCE ON ROAD AND AIRFIELD PAVEMENT TECHNOLOGY 2023

Year: 2023

Page: 168-176

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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