A data base on cyclical soil strength would be of significant assistance in many phases of site evaluation where detailed complete cyclical soil testing is not available or could not economically be obtained. The objective of this study was to develop a partial data base for determining the seismic strength of saturated cohesionless materials, and, by using this data base, to broaden understanding of the mechanism of soil liquefaction induced in the laboratory.
The study is in support of efforts to mitigate the effects of earth-quakes through improved methods for determining the seismic strength of soils. To assist in this problem, cyclic triaxial test data were compiled from published literature and from commercial and research laboratories involved in cyclic testing of cohesionless soils; the data were organized, reviewed, and evaluated. Results were grouped by soil type (Unified Classification System). This data may assist geotechnical engineers to evaluate the seismic strength of cohesionless materials.
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How the strength properties of gravel soils depend on the type and state of the sand filling the pores
Author: A. A. Vasil'eva, V. V. Mikheev, G. L. Lobanova | Size: 502 KB | Format:PDF | Quality:Unspecified | Publisher: Soil Mechanics and Foundation Engineering | Year: 1971 | pages: 5
Little information is available on the shear parameters of coarse detrital soils. Because these conrain
large fragments, it is very difficult to determine their shear resistances. Apparatus and methods (of
laboratory and field types) for investigation of coarse detrital soils have not yet been perfected. Construction
Specification SNiP II-B.I-62 states that the normative pressures on bases of coarse detrital soils
should depend on the type and state of the filler. But in determining the shear parameters of the pore fillers
of such soils we meet almost insuperable difficulties owing to the need to prepare the filler while conserving
the natural state of density and wetness.
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Article/eBook Full Name: How the strength properties of gravel soils depend on the type and state of the sand filling the pores
Author(s): A. A. Vasil'eva, V. V. Mikheev, G. L. Lobanova
Edition: 8(3)
Publish Date: 1971
Published By: Soil Mechanics and Foundation Engineering
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Posted by: ssobhan - 04-23-2013, 08:14 AM - Forum: Archive
- No Replies
PhD Thesis Full Name: Seismic performance of cold formed steel structures, and risk analysis and management for use in earthquake prone regions
Author(s): Zeynalian Dastjerdi, Mehran
Publish Date: 2012
Published By: The University of Queensland
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Hi colleagues,
ASTM journals are one the most trusty references, but access to them are highly limited.
I need some papers from these journals, and would be very grateful if anybody can share them.
1- A New Method for Evaluating the Risk of DEF
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2- Crack Counts in Air-Entrained and Non-Air-Entrained Concrete Subjected to Accelerated and Fog-Room Curing
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3- A Very Early Strength Concrete for Highway Construction
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4- Effects of Temperature, Chemical, and Mineral Admixtures on the Electrical Conductivity of Concrete
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Always use Post Generator (PG) when making request.
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Brief note on the influence of shape and percentage of gravel on the shear strength of sand and gravel mixtures
Author: Saffet Yagiz | Size: 0.124 MB | Format:PDF | Quality:Original preprint | Publisher: Bulletin of Engineering Geology and the Environment, Volume 60, Issue 4 | Year: November 2001 | pages: 321-323
The paper records the influence of the shape and the percentage of gravel on the shear strength/frictional angle of sand and gravel mixtures using direct shear tests. The shear strength is mainly derived from the frictional forces developed due to sliding and interlock; they depend on the maximum particle size and shape, the uniformity coefficient, density and the effective normal stress. As the size of material in a mixture is variable, the shear strength also depends upon the ratio of the specimen diameter to the maximum particle size. In this study, two different shapes of limestone were used, angular and rounded, and the maximum gravel size was 6.3 mm in diameter. Air-dried samples were used in the tests. It is concluded that the shape and percentage of gravel have an important influence on the shear strength properties.
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