Work

Local bond stress-slip constitutive model between concrete and high ductility cementitious composites with totally recycled fine aggregate

Year: 2025

Type: article

Abstract: High ductility cementitious composites with totally recycled fine aggregate (termed as R-HDCC) could well repair the damaged buildings due to its exceptional stain capacity and crack control ability. Meanwhile, the adoption of R-HDCC could accelerate the application of waste concrete, resulting in a reduction of environmental pollution and consumption of natural resources. Previous research has demonstrated that the interface between R-HDCC and concrete exhibited higher shear strength and deformation capacity compared to that between ordinary high ductility cementitious composite and concrete. To understand the intrinsic cooperative behavior between concrete and R-HDCC, the local bond properties were investigated through the double shear test considering the effects of concrete compressive strength, R-HDCC compressive strength and fiber volume fraction in this study. The experimental results indicated that the relative slip and bond stress of various points on R-HDCC/concrete interface decreased with the increasing in distance to the top surface of specimen. The increasing in concrete and R-HDCC compressive strength induced an increase in the relative slip and bond stress at various points on concrete/R-HDCC interface. The increasing in fiber volume fraction of R-HDCC caused the increase in the slip and bond stress at each point during elastic and hardening stages and the decrease during crack development stage. Finally, based on the average bond stress-slip constitutive model, combined with the equilibrium equation, physical equation, and deformation coordination equation, a local bond stress-slip constitutive model was derived.

Source: Structures

DOI: 10.1016/j.istruc.2025.108585

Authors: Mingyan Lv, Danying Gao, Jiyu Tang, Jihao Chen

Institutions: North China University of Water Resources and Electric Power, Zhengzhou University

Language: English

Topic: Structural Behavior of Reinforced Concrete

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $3,510