198A

of t h e earthcrust.Symposium. In Germmm.Figs,Tabls, Refs. AKADEMIE DER WlSSENSCHAFgEN DER DDR.ZENTRALINST.FUER PHYSIK D~ ERDE, POTSDAM,1973, 271P. The volume is dedicated to the 25th anniversary of the Geotechnical Institute, established on Sel~ember 12th, 19~6 amd to the memory of two scientists, Hans Stille and Serge Von Bubnoff. The papers are comcermed with gener- al problems of geotectomics. An attempt is made to give a review of actual fields of research, thus indicatimg trends amd development which made geotectomlcs an inte- gral part of crustal research and contributing to the establishment of the theoretical framework in the field of mineralogy.

Properties of rocks and soils

See also abatracts:1945,2072.

195o FRIEDMAN, M CENg. FOR TECTO~PHYSIC S, UNIV .TEXAS, USA HUR.TR UNIV • MISSO~I, ROLLA, USA Investigations of the relations am~ residual strain, fabric, fract=re amd ultrasonic atternmtiom amd vel- ocity in rocks.6F,1T,13R. I~T. J.ROCK MECH. MIN. SCI. Vll, ~6, JUNE, 197~, P221- 234.

1951 RICK~I'I'S, TE BUR.MINES, TWIN CITIES, MINN. USA Generalized Rayle~4~h wave propagation In aniso- tropic rock. 7F,2T, gR.

.J.ROCK MECH.M~N. SCI.VII, N6, JUNE, 1974, P251" 259.

1952 NEELY, WJ FRA~ILESA, LTD. ZA Passive pressure of ss/~.10F,22R. TRANS. S. AFR. INSTN. ClV. E~SS. Vl6, ~6, JUNE, 197~, P193-198. The factors which are known to affect the m~nitude anl distribution of passive pressure in cohesionless soils are studied and, using previously obtained theoretical and experimental data, from bo%h field ar~ laboratory werk, va31es a r e suggested for t h e passive e a r t h pressm'e coefficient for use in practical design problems.

1953 KATSUBE, TJ Radar sourding and electrical rock properties. GEOL. SURVEY CANADA.PAFER 7~-I,PA~T A,197~,PT~82.

195~ RYZHIEDV, IB SCI. RES. INST. IND. CONSTR. SU Use of a modal of an elastoplastic medium fer anal- yzing static soumding.2F,1T,13R. SOIL MECH.FOUND.E~NG.VI0,NS, SE~T-OCT.1973,P357-359. The investigations of the relation between sounling res- ults and soil Imoperties shewed that t h e a~reement bet- ween the results of theoretical and experimental invest- igations increases with t h e u s e of a m~'e g e D e r a l case of the thecratical relation, i.e. when a medium capable of experiencing destructive ~ mon-destructlve deform- ations is used as a soil modal. The use of a model of an elastoplastic medium in a theoretical analysis of the sOn r~ng process makes it possible to unite into one system the ms4crity of known empirical relations between sounding data and mechanical properties of soil.

z955 GROMKO, GJ UNIV COLORADO, DENVER, USA Review of expansive soils.SF,6T,~2R. J. GEOTECH. ENGNG .DIV, VIO0, C416,197~, P667-687 • Numerous man-made structures aroumd the wcrld have been

subjected to considerable damage due to differential heave from moisture absorbed by expansive clay foundation soils. The actual heave is a function of mar~ factors, e 6. climatic corditions, moisture conte~ of soll immed- iately prior to building, the amou~ azxl type of foun- dation soils and the c, verburden load at the foundation level. The three most prominent clay minerals are revie- wed and montmerillonite is found to constitute the most expansive clay soils. Stabilization of these soils may include chemical action, presaturation, compaction, emg- ineered-type foundations and reinforced slabs.

1956 BOU~BONNAIS, J UNIV. ALBERTA, EDMONTON, CDN An analytical stilly of the in-situ deformation of rock .Figs,Tabls,Ref s. MSC THESIS,UNIV.~L~RTA, CANADA, 1973.

1957 EI~ECH, WW HENDERSON, FA HJELMSTAD, KE A standard rock suite for rapid excavation research. Report. 16F. US.BUR.MINES,RI, 1974, 29P. Rock property data are needed over a wide ra~e of p~ra- meters fur the opt~ execution of rapid excavation research. Eight rock types were chosen for a atam~mrd rock suite. Large rock blocks were qmsrrled and ~he standard l~ysical and mechanical properties measured and doc~ented. Geolo~ical, petro~ral~blc, l~ical and mechanical properties test data are reported for each rock type. The iDf~ion is ~he firat step in the building of a comprehensive I~oI~Y listing for the eight rock t~s.

I~8 GOLDSMITH, W SACKMAN, JL Wave propagation in aniso%ropic rocks.Re~.F~s, Refs. CALIF. UNIV. BEP~W~ RY, REPORT NO. AD- 761203, JU~, 1973, 260P.

Texture,structure,composition and density

A R K H ~ S K I I , IV DeCecalmCion of the d e ~ i t y of offshore sa~ls.2F,1T.

During explorations on marine wate~s,~yramtc sotmCiz~ of the bottom deposits was carried out alo~ wi~h drilli~ from floating platforms. From the data of a) drivi~ the probe during drilling and b) dy-gm4c so-r~r~u graphs were plotted giving the resistance of the delx)stts t;o penetration and dynamic sounling. The first were used for the relative evaluation of the density a~i umifo,~ity of deposits, the second for determ~mimg the density of the sounds in accordance with the conventional scale.

z960 TOMASZ~WSKI, J A new trend in systematlcs of Polish soils.Tranmla- tion from Polish.Report.Figs,TablssRefs. NSF, DEll. OF AGRICUL~VJEE, WASHIROTON, D • C • ~ZFO~ - 71- 54052,1973, 22P.

z961 PINCUS, HJ Development of capabilities of optical diffrsc , '~ , ton analysis for quantlts~ively cmmperlng anf currelatlng rock fabrics and fabric c~s.Figs~Refs. WISCONSIN UNIV. MILWAt~G~E, DEPT. GEOL. SCI .REPORT, NO. AD- 76165~, JUNE, 1973,85P.