Browse > Article

Size Effect of Specimen and Aggregate on Fracture Characteristics of Cemented Sand  

Kim Tae-Hoon (DAEWOO E & C)
Lee Kang-Il (Dept. of Civil Engrg., Daejin Univ.)
Im Eun-Sang (Korea Water Resources Corporation)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.7, 2004 , pp. 45-55 More about this Journal
Abstract
In the past it has been often observed that the shear stresses at failure are much smaller than the shear strength obtained from traditional laboratory tests and conventional analysis technique is inadequate in stiff soil, such as cemented sand. Many researchers have brought attention to the fact that the presence of flaws i.e. fissures, cracks, joints have a great effect on the strength and overall stress-strain behavior of such materials. They have thought that fracture mechanics may appropriately be adopted as a good tool for analysis of these materials. However, the use of fracture mechanics concept especially for cemented sands is faced with difficulties in obtaining relevant parameters, because fracture parameters and predictions are highly dependent on the material constituents and the size of specimens as well as the size of particles. This paper addresses the effects of sizes which include specimen and aggregate on fracture properties of cemented sand. The results of laboratory tests show that the sizes of specimens and particle have a great effect on the fracture properties such as nominal strength of cemented sand.
Keywords
Cemented sand; Crack; Fracture mechanics; Nominal strength; Shear strength; Size effect;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bazant, Z. P. (1984), 'Size Effect in Blunt Fracture: Concrete, Rock, Metal', Journal of Engineering Mechanics, ASCE, 110(4), pp.518-535   DOI   ScienceOn
2 Haberfield, C. M., and Johnson, I. W. (1989), 'Relationship Between Fracture Toughness and Tensile Strength for Geornaterials', Proc. of $12^{th}$ Int. Conf. of Soil Mechanics and Foundations, Rio DeJaneiro, Brazil, Vol.I, pp.47-52
3 Rizkallah, J. (1977), 'Stress-Strain Behavior of Fissured Stiff Clays', $9^{th}$. Int. Conf. on soil Mechanics and Foundation, Tokyo, Japan, Vol.1, pp.267-270
4 ASTM Annual Standards (1997), 'Standard Test Method for Plane Strain Fracture Toughness of Metallic Materials', ASTM Designa-tion E399-74
5 Mould, J. C., Jr. (1983), 'Stress Induced Anisotropy and the Evaluation of Multi-surface Elasto-plastic Material Model', Ph.D thesis, University of Colorado at Boulder
6 Alqasabi, A. O. (1998), 'Fracture Behavior of Cemented Sand', Ph.D thesis, University of Colorado at Boulder
7 Skempton, A.W. (1964), 'Long-term Stability of Clay Slopes', Geotechnique, Vol.14, pp.77-101   DOI
8 Iosipescu, N. (1967), 'New Accurate Procedure for Single Shear Testing of Metals', Journal of Materials, Vol.2, No.3, pp.537-566