Shear Strength Investigations for a Class of Extraterrestrial Analogue Soils

A class of granular materials is presented that was obtained from quarried intrusive igneous rock, further processed to match the grain-size distribution of typical Apollo samples. Texture, mineralogy, and chemical composition have been investigated; and the material is classified as basaltic andesite. A series of triaxial compression tests have been performed to assess the influence of confining stress on the shearing behavior at medium to low stress levels. A medium sand is used as reference. In one of the test series, corundum was added to simulate the glass particles found in the lunar regolith. Both stress-strain curves and volumetric strains are reported. All samples tested exhibit a purely dilatant behavior at low confining stress levels. Shear strength can be expressed either by a curved Mohr-Coulomb envelope or by a linear one with a cohesion intercept. Results are shown to agree well with those obtained on common lunar soil simulants. DOI: 10.1061/ (ASCE)GT.1943-5606.0000619. © 2012 American Society of Civil Engineers. CE Database subject headings: Soils; Particle size distribution; Shear strength; Dilatancy; Lunar materials. Author keywords: Soils; Particle size distribution; Shear strength; Dilatancy; Lunar materials.

[1]  Allen Wilkinson,et al.  Digging and pushing lunar regolith: Classical soil mechanics and the forces needed for excavation and traction , 2007 .

[2]  C. A. Pearse.  Photometry and polarimetry of the moon and their relationship to physical properties of the lunar surface , 1963 .

[3]  Boris Jeremić,et al.  MECHANICS OF GRANULAR MATERIALS AT Low EFFECTIVE STRESSES , 1998 .

[4]  Alsidqi Hasan,et al.  Strength Properties of JSC-1A Lunar Regolith Simulant , 2009 .

[5]  Isam Shahrour,et al.  Failure and Dilatancy Properties of Sand at Relatively Low Stresses , 2006 .

[6]  S. Noble.  The Lunar Regolith , 2009 .

[7]  R. Maitre,et al.  The construction of the Total Alkali-Silica chemical classification of volcanic rocks , 1992 .

[8]  C. Allen,et al.  JSC-1: A NEW LUNAR SOIL SIMULANT , 1994 .

[9]  R. W. Le Maitre,et al.  A Chemical Classification of Volcanic Rocks Based on the Total Alkali-Silica Diagram , 1986 .

[10]  R. H. King,et al.  Analytical models and laboratory measurements of the soil–tool interaction force to push a narrow tool through JSC-1A lunar simulant and Ottawa sand at different cutting depths , 2011 .

[11]  Charles Meyer,et al.  The Lunar Sample Compendium , 2010 .

[12]  Dimitrios Kolymbas,et al.  Recent results of triaxial tests with granular materials , 1990 .

[13]  P. W. Rowe.  The stress-dilatancy relation for static equilibrium of an assembly of particles in contact , 1962, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[14]  Xiangwu Zeng,et al.  Design and characterization of GRC-1: A soil for lunar terramechanics testing in Earth-ambient conditions , 2010 .

[15]  Stein Sture,et al.  Geotechnical Behavior of JSC-1 Lunar Soil Simulant , 2000 .

[16]  J. K. Mitchell,et al.  Apollo soil mechanics experiment S-200 , 1974 .

[17]  K. Gordon,et al.  Characteristics of a Simulant for Lunar Surface Materials , 1988 .

[18]  W. D. Carrier,et al.  Particle Size Distribution of Lunar Soil , 2003 .

[19]  Xiangwu Zeng,et al.  Geotechnical Properties of JSC-1A Lunar Soil Simulant , 2010 .

[20]  Stein Sture,et al.  Engineering Properties of Lunar Soil Simulant JSC-1A , 2010 .

[21]  S. Sture.  A Review of Geotechnical Properties of Lunar Regolith Simulants , 2006 .

[22]  M. Bolton.  THE STRENGTH AND DILATANCY OF SANDS , 1986 .

[23]  Fumio Tatsuoka,et al.  Strength and deformation characteristics of saturated sand at extremely low pressures , 1984 .

[24]  D. Wood.  Soil Behaviour and Critical State Soil Mechanics , 1991 .

[25]  S. Aoki,et al.  Bearing capacity of shallow foundations in a low gravity environment , 2009 .

[26]  Rodrigo Salgado,et al.  Dilatancy and Shear Strength of Sand at Low Confining Pressures , 2010 .

[27]  S W Perkins,et al.  Mechanical and Load-Settlement Characteristics of Two Lunar Soil Simulants , 1996 .

[28]  Gerd Gudehus,et al.  INFLUENCE OF THE FOUNDATION WIDTH ON THE BEARING CAPACITY FACTOR , 1988 .