Open AccessNumerical investigation of the mechanical behaviour of a structural element containing a self-healing agent
Author(s) -
Todor Zhelyazov,
Radan Ivanov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1002/1/012015
Subject(s) - self healing , materials science , homogenization (climate) , composite material , cracking , composite number , cement , computer simulation , structural engineering , computer science , engineering , alternative medicine , pathology , medicine , biodiversity , ecology , biology , simulation
This paper presents a virtual experiment on the behaviour of a self-healing material from the family of cement-based composites, that contains a healing agent. A numerical model of a specimen made of a cement-based material, and containing a healing agent is subjected to the loading configuration of the four-point bending test, whereby the forces are applied in a quasi-static way. The response of the healed specimen is compared to the response of a specimen that doesn’t contain a healing agent. For the specimen that contains a healing agent, homogenization techniques are used to determine the characteristics of the equivalent material (cement-based composite / healing agent) in zones where damage and macro-cracking have occurred, i.e., zones in which the healing agent has been activated. The main result of this contribution is the formulation and validation of a numerical simulation approach suitable for modelling the mechanical behaviour of self-healing cement-based composites.