Summary
The importance and the problem of producing adequate engineering geological or geotechnical maps is specifically discussed where thick layers of lateritic and saprolitic soils occur, for highway purposes in general and particularly, for low cost roads and related engineering works.
As far as mapping purposes are concerned, the limitations of the use of soil characterization based on gradation, Atterberg limits and HRB-AASHO (or USCS) classification supplemented by the conventional CBR test are emphasized.
In order to deal with these limitations we present a procedure which uses basically a very simple apparatus and small size samples (40 to 50 mm diameter) which provide the most necessary data for highway purposes, mainly for low cost pavement design and for forecasting soil cut slope erodibility.
Résumé
Nous discutons ici l'importance de l'élaboration de cartes de géologie de l'ingénieur ou cartes géotechniques, et le problème de leur réalisation, précisément: a) dans les régions où se trouvent d'épaisses couches de latérite ou de sols saprolitiques; b) pour les besoins des grandes routes en général; et c) particulièrement pour des routes à faible prix de revient et les ouvrages d'art correspondants.
Dans la mesure où les buts du levé de carte sont concernés, nous insistons sur les limites des procédés suivants: a) caractérisation des sols basée sur la granulométrie; b) limites d'Atterberg; et c) classification HRB-AASHO (ou USCS) complétée par le classique essai CBR.
Au sujet de ces limitations, nous présentons un procédé qui utilise essentiellement un appareil très simple et des échantillons de petites dimensions (40 à 50 mm de diamètre) qui fournissent les données numériques les plus nécessaires aux les besoins des grandes routes, ainsi qu'aux les projets de chaussées à bas prix de revient et à la prévision des risques d'érosion des talus de déblais.
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References
AASHO COMMITEE ON DESIGN (1962): ASSHO Interim guide for the design of flexible pavement structures. Washington D.C., p. E. 4.
ASTM (1976): Annual book of ASTM standards, Philadelphia, part 19, 244–250.
BLACK W.P.M. (1962): A method of estimating the California bearing ratio of cohesive soils from plasticity data. Géotechnique, 12(4), 271–282.
DER—DEPARTAMENTO DE ESTRADAS DE RODAGEM DO ESTADO DE RODAGEM DO ESTADO DE SÃO PAULO (1974): Metodos de ensaios. Diretoria Técnica, São Paulo, 131–140.
GIDIGASU M.D. (1976): Laterite soil engineering. Elsevier, Amsterdam, 232–233.
LAFLEUR J.D.—DAVIDSON D.T.—KATTI R.T.—GURLAND J. (1960): Relationship between the California bearing ratio and Iowa bearing value, (Progress Report 1956), in: Methods for Testing Engineering Soils. Iowa State University, Ames, 257–288.
MEIRELES J.M.F. (1967): Erosão de taludes de estradas. 2o Jornadas Luso-Brasileiras de Engenharia Civil, Rio de Janeiro e São Paulo.
NASCIMENTO U.—CASTRO E. (1974): Preventive measures against slope erosion, criteria for soil selection. Proc. II Int. Congr. Int. Assoc. Engng. Geol., São Paulo, Vol. 2, pp V. 15.1–11
NOGAMI J.S. (1978a): The adequate use of genetic grouping of lateritic and residual soils. Proc. III Int. Congr. Int. Assoc. Engng. Geol., Madrid, Sec. II, Vol. 2, 153–159.
NOGAMI J.S. (1978b): A tecnologia rodoviaria e as peculiaridades dos nossos solos. Proc. 2o Congr. Bras. Geol. Eng., São Paulo, 95–103.
PELTIER R. (1954): Manuel du laboratoire routier. Dunod, Paris, 113–121.
PELTIER R.M. (1962): Evolution des méthodes de dimensionnement des chaussées souples. Rév. Gén. des Routes, No 360, Paris.
PHILIPPONAT G. (1973): Etude experimentale de l'érosion des sols et du drainage superficiel à Madagascar. Rév. Gén. Routes, Paris, no 489, 59–64.
RUIZ C.L. (1958): Classification de materiales para subrasantes del highway research board (HRB), su correlacion com el valor suporte California e interpretacion. Direcion de Vialidad, Provincia de Buenos Aires, La Plata.
SANTOS M.P. dos—CASTRO E. (1967): Estudos sobre erosão em taludes. 2o Jornadas Luso-Brasileiras de Engenharia Civil, Rio de Janeiro e São Paulo.
STEPHENSON H.K.—KARRH J.B.—KOPLON N.A. (1967): Compacted soil strength estimated from grain size distribution and soil binder analysis. Highway Research Record No 190, Pub. 1521 Washington D.C., 1–7.
UTIYAMA K.—NOGAMI J.S.—CORREA F.C.—VILLIBOR D.F. (1977): Pavimentação economica—solo arenoso fino, Revista DER, São Paulo, no 124.
VALLERGA B.A.—SHUSTER J.A.—LOVE A.L.—VAN TIL C.J. (1969): Engineering study of lateritic soils in connection with construction of roads, highways and airfields. U.S. Agency for International Development, Report AID/CSD-1810.
VARGAS M. (1974): Engineering properties of residual soils from south central region of Brazil, II Int. Congr. Int. Assoc. Engng. Geol., São Paulo, VOl. 1, p. IV. PC-5.12.
VILLIBOR D.F.—CORREA F.C.—NOGAMI J.S. (1974): Os solos arenosos finos—estado atual de utilização em bases de rodovias paulistas Proc. V. Congr. Bras. Mec. Solos, Vol. II, São Paulo, 53–63.
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Nogami, J.S., Villibor, D.F. Soil characterization of mapping units for highway purposes in a tropical area. Bulletin of the International Association of Engineering Geology 19, 196–199 (1979). https://doi.org/10.1007/BF02600475
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DOI: https://doi.org/10.1007/BF02600475