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Title: The influence of coarse aggregate size and volume on the fracture behavior and brittleness of self-compacting concrete

This paper presents the results of an experimental investigation on fracture characteristics and brittleness of self-compacting concrete (SCC), involving the tests of 185 three point bending beams with different coarse aggregate size and content. Generally, the parameters were analyzed by the work of fracture method (WFM) and the size effect method (SEM). The results showed that with increase of size and content of coarse aggregate, (a) the fracture energy increases which is due to the change in fractal dimensions, (b) behavior of SCC beams approaches strength criterion, (c) characteristic length, which is deemed as an index of brittleness, increases linearly. It was found with decrease of w/c ratio that fracture energy increases which may be explained by the improvement in structure of aggregate-paste transition zone. Also, the results showed that there is a correlation between the fracture energy measured by WFM (G{sub F}) and the value measured through SEM (G{sub f}) (G{sub F} = 3.11G{sub f})
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1]
  1. Department of Civil Engineering, Babol University of Technology (Iran, Islamic Republic of)
  2. Department of Civil Engineering, Sharif University of Technology, P.O. Box 11155-9313 (Iran, Islamic Republic of)
  3. Faculty of Civil Engineering, Islamic Azad University, Rasht Branch, Rasht (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22395934
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cement and Concrete Research; Journal Volume: 66; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BENDING; BRITTLENESS; CONCRETES; FRACTURE PROPERTIES; FRACTURES; MICROSTRUCTURE; SCANNING ELECTRON MICROSCOPY