Stress-Strain Behavior of Cementitious Materials with Different Sizes. (12th March 2014)

• Record Type: Journal Article
• Authors: Zhou, Jikai; Qian, Pingping; Chen, Xudong
• Other Names: Marques A. T. Academic Editor.; Rambo C. Academic Editor.
• Is Part Of: TheScientificWorldjournal. Volume 2014(2014)
• Publication Date: 2014-03-12
• Subjects: Science -- Periodicals; Technology -- Periodicals; Medicine -- Periodicals; 505
• DOI: 10.1155/2014/919154
• Languages: English
• ISSNs: 2356-6140

Abstract

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.