Estimating joint roughness coefficients

Estimating joint roughness coefficients

2A Properties of Rocks and Soils stic l ~ a P e ~ e s , crack or flaw detection, struct ~ a l quality assessment, acoustic emission, acoustlc index ...

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2A

Properties of Rocks and Soils

stic l ~ a P e ~ e s , crack or flaw detection, struct ~ a l quality assessment, acoustic emission, acoustlc index properties for rock classification, lX~rosity, depth to bedrock, dip of strata.

801013 WORK INPUT TO A GRANULAR MATERIAL. TECHNICAL NOTE Houlsby, G T Geutechnlque, V29, N3, Sept 1979, F354-358 A new i ~ e t a t l o n of the prlmclple of effective s t r e s s i s of T e r e d i n terms of c o n t i r a n n n mechanics. The principle of effeetive stress is seen as a principle of the IDdependemce of the mechanical w~rk input to the soll skeleton ard to the pare wateT fluid. 801014 S t ~ G E ~ METHOD FC~ SOIL SPECIMEN REMOULDING BY WET-RAINING Chazey, R~ Mulills, J P Geutech Test J, VI, N2, JUne 1978, PI07-I08

801022 MOISTURE AND FROST-RELATED SOIL PROPERTIES. TRANSPORTATION RESEARCH RECORD 675 Washington, DC: National Academy of Scier~es, Transpurtation Research Board, 1978, 43P Com~ises papers largely c o n c e r ~ with the investigation of soil properties related to p o t e n t i a l b a h a v i o u r i n pavement s u b b a s e s . Selected papers are abstracted in this issue. A v a i l : TRB, NAS: 2101 C o n s t i t u t i o n Washington, DC 20418, USA

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Texture, structure, composition and density 8o1023 ESTIMATING JOINT ROUGHNESS COEFFICIEhTS

801O15 S ~ D Y OF FISSURED STIFF CLAYS (IN FRENCH) Perrot, A; Vi@mn'oux, A Liaison Lab l ~ s Chaussees, NI02, J ~

Tse, R; Crudem, D M Int J Rock Meah Min Sci, VI6, NS, Oct 1979, P303-3o7

AUg 1979, PI04-I05 Describes a core e~tter for taking trisxial samples of 38"*" diameter f'rcm stiff fissured clays. A method of studying fissuration by inJectlon is also presented.

8o1o16 m ~ u c A~ ~UCAL soils (z~ z ~ )

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Amdrei, S

Rev Fr Geotech, N2, Oct 1977, ~9-78 801017 S(~E PHYSICAL PROI~TXES OF ~ SEDIMENTARY ROCKS IN THE M~B0t~RE AREA Moore, P J; Chamdler, K R P r o c I n t e r m a t i o m a l SYmposium o n t h e Geotechnics

of strmctmmlly Complex Formations, Capri, 1977, Vol l, P3~5-3~2 801018 TESTING OF SOME GEOrECHNICAL PROF~RTIES OF ~JDA MARL IN HUNGARY Paal, T Proc In~eruatioml ~ s i u m on the Geotechmics of structurally Complex Formations, Cal~i, 1977, Val 1, P365-369 801019 CORNELATION ~ MECHANICAL AND ACOUSTIC PROPERTIES OF FLYSCH SANDSTONES Pininska, J Proc Iuterma~iomal Symposium on the Geutechnics of structurally Complex Formations, Capri,

1977, Vol i, P387"39~ 801020 SCME CONSIDERATIONS ON INDEX PROPERTIES OF SOUTHerN ITALY S~%LES Rippa, F; Picarelli, L Proc Interr~tiorel symposium on the Geotechnics of stru~turall F Complex Furmations, Ce~ri, 1977, Vol I, I ~ O 1 - ~ 801021 ACOUSTIC NO~)ESTR[ETIVE TESTING I N ~ A T I O N FOR MINING RESEARCH Thill, R E Proc Spring Meetlmg~ SOCiety for Experimental Stress Amalysis, Wichita, Kansas, 14-19

May 1978, R~-85 Describes the instrumentation used end reviews determimations performed by these i ~ n t s , which include: elastic wave velocities, dynamic elastic moduli, anlso~ropy, homogeneity, anela-

Eight p a r a m e t e r s that have b e e n u s e d t o c h a r a c t e r i z e m m z r i c a l l y t h e r o u g h n e a s of s u r f a c e s have been measured on ten profiles typifying different Joist roughness coefficients. Values of two of these parameters, the rout mean square a ~ the m a n sqtlare of the first derivative of the profile, are stro~ly correlsted with vmlues of the Jolnt r c ~ s s coefflce~. Equations are developed ~ziah avoid the s~Jectivity of estimates of JRC b y comparison with typical profiles. They will be useful checks on values of JRC estimated from profiles of rough surfaces. 801024 ACCURACY OF THE DENSITY SCOOP FC~ UNIT WEIGHT D..'-'a~u4INATIONS IN COHESIONLESS SOILS Weiler, W A; K u l h a ~ , F H Geotech Test J, VI, ~ , Dec 1978, P234-236 801025 PHASE COMPOSITION M E A S ~ B T S ON SOILS AT VERY NIGH WATER CONTENTS BY THE PULSED NUCLEAR MAGNETIC RESONANCE TECHNIQUE Tice, A R; Burrous, C M; Anderson, D M Transp Res Rec, N675, 1978, Pll-14 Describes a simple, rapid method Of determining the unfrozen water content of frozen soils. 801026 EVALUATION OF HYSTERESIS IN MERCURY INTRUSION POROSIMETRY BY SECOND-INTRUSION METHOD Cebeci, 0 Z; Demirel, T; Lohnes, R A Transp Res Rec, N675, 1978, F15-20 801027 KINDS OF STRUCTURALLY CCMPLEX FORMATIONS AND APPROACH FOR VALUATION OF THEIR MECHANICAL m~AVIOUR Avramova-Tacheva, E; Ma~-v: G Proc International symposium on the Geotechnics of Structurally Complex Formations, Capri, 1977, Vol l, P19-27

Fracture processes 801028 M I C R Q M E ~ C S OF IMPACT FRACTURE OF ROCK Grady, D E; Kipp, M E Int J Rock Mech Min Sci, V16, NS, Oct 1979,

P293-3o2 The work was tundertaken to provide a better understanding of the mechanisms leading to rate-