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Mechanical Properties of Simulated Mars Materials— Gypsum ...

Mechanical Properties of Simulated Mars Materials— ... 5.82±0.34 Ma (Damon and others, 1974), and minimally weathered. Identical to the gypsum sand, the ... simulated rock as a "gypsum sandstone" based on grain size rather than mineralogy. The lapilli tuff is from the northeast flank of North Menan Butte, which is part of the Menan ...

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Lectures on Rock MechanicsLectures on Rock Mechanics

gypsum serpentine quartz Common Minerals Average G s = 2.70 012 345 678 ... HOWEVER a rock mass can have even less tensile strength. COMPLEXITIES…. 4. Groundwater effects ... Order of Description of Rocks (AS 1726-1993) ROCK MASS PROPERTIES structure defects (much information required)defects (much information required) ...

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MECHANICAL PROPERTIES OF GYPSUM BOARD AT …

the results of a study examining the mechanical properties of Type X gypsum board at elevated temperatures. These properties are needed to contemplate the engineering design of gypsum board fire barriers. Tests were undertaken with a small oven within a test machine measuring mass loss,

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Evolution of mechanical properties of gypsum in time

Evolution of mechanical properties of gypsum ... The tested samples were prepared from a gypsum binder with a mass of 1.0 kg and water, where amount of water corresponded with the water/gypsum ratio 0.71. Gypsum was poured inside a beaker with water for 20 seconds. While it was

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Mechanical properties of Michigan Basin's gypsum before ...

1. Introduction. Determining the mechanical properties of gypsum rock is important in many engineering projects including the stability of abandoned underground gypsum mines, especially for mines that become flooded after mining operations have been completed (Doulati Ardejani et al., 2013).Uniaxial compressive strength (UCS) is one of the most widely used rock …

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PROPERTIES OF ROCKS AND THEIR APPLICATIONS ROCK …

Knowledge of Soil Mechanics is not adequate to with the problem of rock mass. Rock mechanics as a subject started in 1960. It deals with properties of rocks and the special methodology required for design of rock related components used in engineering schemes. Design in rock is really special due to the following reasons. 1.

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Mechanical Properties of Simulated Mars Materials— …

Mechanical Properties of Simulated Mars Materials— ... 5.82±0.34 Ma (Damon and others, 1974), and minimally weathered. Identical to the gypsum sand, the ... simulated rock as a "gypsum sandstone" based on grain size rather than mineralogy. The lapilli tuff is from the northeast flank of North Menan Butte, which is part of the Menan ...

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PHYSICAL PROPERTIES OF ROCK

general, rock and rock mass properties can be divided into five groups: C physical properties (durability, hardness, porosity, etc.), C mechanical properties (deformability, strength), C hydraulic properties (permeability, storativity), C thermal properties (thermal expansion, conductivity), and C …

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Rock mass properties - Rocscience Inc.

Rock mass properties 9 the tunnel face is shown in Figure 3 and a back analysis of the behaviour of this material suggests that an appropriate value for V ci is approximately 50 MPa. In other words, on the scale of the 5.5 m diameter tunnel, the rock mass properties are "averaged" and there

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(PDF) Physical and Mechanical Properties of Gypsum-Like ...

then the physical and mechanical properties of gypsum rock are studied, and the conclusion is as follows: the density of the water. saturated sample, and the …

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mechanical properties for gypsum rock mass pdf

Several studies on gypsum rock showed that it experiences the various problems due change in the physical and mechanical properties of gypsum rock due to the dissolution of gypsum, so there is a need for prediction the mechanical properties of such a problematic type of the rock, such as gypsum rock (Klimchouk, 1996; Johnson, 2005; Salih et.al ...

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Classifications of Rock Properties - RockMass

Intact rock strength . The uniaxial compressive strength of a rock material constitutes the highest strength limit of the rock mass of which it forms a part. It is determined in accordance with the standard laboratory procedures. For the purpose of rock mass classification, the use of the well -known point load strength index can be useful as the

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Physical and Mechanical Properties of Gypsum-Like Rock ...

Conclusion. In order to study the physical and mechanical properties of gypsum-like rock samples, four sets of samples under different water conditions were tested by ultrasonic, uniaxial compression, conventional triaxial compression, Brazilian splitting, X-ray diffraction, and scanning electron microscope.

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Gypsum Board Typical Mechanical and Physical Properties

gypsum board typical mechanical and physical properties The properties described herein were either obtained from laboratory tests conducted under controlled test conditions as set forth in appropriate standards, compiled from manufacturers'

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GSI: A GEOLOGICALLY FRIENDLY TOOL FOR ROCK MASS …

mechanical properties of the rock mass. The procedure for making these estimates has been described in detail by Hoek and Brown (1997) it will not be repeated here. A spreadsheet for carrying out these calculations is given in Table 4 5. Table 4: Spreadsheet for the calculation of rock mass properties Input: sigci = 10 MPa mi = 10 GSI = 30

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(PDF) Physical and Mechanical Properties of Gypsum-Like ...

then the physical and mechanical properties of gypsum rock are studied, and the conclusion is as follows: the density of the water. saturated sample, and the longitudinal wave velocity of the ...

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