title: Stress-strain behavior of cementitious materials with different sizes.
abstract: The size dependence of flexural properties of cement mortar and concrete beams is investigated. Bazant's size effect law and modified size effect law by Kim and Eo give a very good fit to the flexural strength of both cement mortar and concrete. As observed in the test results, a strong size effect in flexural strength is found in cement mortar than in concrete. A modification has been suggested to Li's equation for describing the stress-strain curve of cement mortar and concrete by incorporating two different correction factors, the factors contained in the modified equation being established empirically as a function of specimen size. A comparison of the predictions of this equation with test data generated in this study shows good agreement.
authors.affiliation: College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China.
authors.forename: Jikai
authors.initials: J
authors.lastname: Zhou
authors.affiliation: College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China.
authors.forename: Pingping
authors.initials: P
authors.lastname: Qian
authors.affiliation: College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China.
authors.forename: Xudong
authors.initials: X
authors.lastname: Chen
mesh_terms: D000465:Algorithms; D003252:Construction Materials; D008422:Materials Testing; D008962:Models, Theoretical; D013314:Stress, Mechanical