Tailoring strain-hardening cementitious composite repair systems through numerical experimentation

摘要: Abstract Innovative cement-based repair materials may require different procedures for application in comparison to standard requirements. Before their field application, a proper protocol should be established. Apart from laboratory experiments, numerical simulation can of great use. Herein, lattice type model is used simulate fracture performance fiber reinforced material – strain hardening cementations composite (SHCC) and its the system. Repair was first tailored through testing single pullout test direct tension test. Further on, structural behavior system impact initial defects mortar substrate (reflective cracking) examined. The influence addition, simulated roughness interface properties between new old on investigated. Fracture propagation sequence crack development obtained by compared experimental results. study gives insight into benefits distributed microcracking high ductility over localized cracking inherent brittleness non-reinforced It envisioned that this approach tailor specific applications, resulting more reliable durable concrete repairs future.