The effect of water to cement ratio on fracture parameters and brittleness of self-compacting concrete
By M. Beygi, M. Kazemi, Iman M. Nikbin, J. V. Amiri. 2013
190 citations recorded by the source corpus.
Abstract The paper describes an experimental research on fracture characteristics of self-compacting concrete (SCC). Three point bending tests conducted on 154 notched beams with different water to cement (w/c) ratios. The specimens were made from mixes with various w/c ratios from 0.7 to 0.35. For all mixes, common fracture parameters were determined using two different methods, the work-of-fracture method (WFM) and the size effect method (SEM). Test results showed that with decrease of w/c ratio from 0.7 to 0.35 in SCC: (a) the fracture toughness increases linearly: (b) the brittleness number is approximately doubled: (c) the effective size of the process zone c f in SEM and the characteristic length ( l ch ) in WFM decrease which may be explained by the change in structural porosity of the aggregate–paste transition zone; and (d) the fracture surface of concrete is roughly smoother, which can be attributed to the improved bond strength between the aggregates and the paste. Also, the results showed that there is a correlation between the fracture energy measured by WFM ( G F ) and the value measured through SEM ( G f ) ( G F ≅ 2.92 G f ).
Subfields: Civil and Structural Engineering
View Paper: https://www.semanticscholar.org/paper/432de50f8fed5523018344cb2a961fb71852d57f
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In Civil and Structural Engineering
Citations in the corpus
- Flexural behavior of self-compacting concrete reinforced with different types of steel fibers (2013, background): “Authors determine the fracture energy as it is the fundamental parameter used in the practice [37].”
- The influence of coarse aggregate size and volume on the fracture behavior and brittleness of self-compacting concrete (2014, background): “This can be attributed to better quality of ITZ and less dependency of this region on w/c due to use of mineral filler of limestone powder [46].”