TRIAXIAL TESTIN G O FSOILS AN D BITUMINOU S

MIXTURES

A Compilation of Papers Presented at th eFIRST PACIFI C ARE A NATIONA L MEETIN G

San Francisco, Calif., October 10, 1949AND

FIFTY-THIRD ANNUA L MEETIN GAtlantic City, N. J., June 28, 1950

OF THE

AMERICAN SOCIETY FOR TESTING MATERIALS

U.S. Pat . Off .

Special Technical Publication No. 106

Published by th eAMERICAN SOCIET Y FO R TESTING MATERIALS

1916 Race Street, Philadelphia 3, Pa .

COPYRIGHT, 195 1

BY TH E

AMERICAN SOCIET Y FOR TESTING MATERIAL S

Printed in Baltimor e Md .October, 195 1

FOREWORD

The paper s an d discussion s i n thi s publicatio n o n Triaxia l Testin g ofSoils and Bituminou s Mixtures were presented at tw o nationa l meetings ofthe American Society for Testing Materials. Three of the papers dealing withbituminous mixture s were presented a t a sessio n o f the Firs t Pacifi c AreaNational Meeting held in San Francisco, Calif., October 10-14,1949, presidedover by H. E. Davis of the University of California. This session on bitumi-nous pavin g mixtures was developed fo r th e Technica l Progra m Commit -tee o f the Genera l Committee on Arrangements.

The remainder of papers, with the exception of one, were presented at th eTenth an d Elevent h Session s o f th e Fifty-thir d Annua l Meeting o f th eSociety held in Atlantic City, N. J. , Jun e 26-30 , 1950 . These two sessionswere sponsore d b y Committe e D-4 on Road an d Pavin g Material s unde rthe directio n of a specia l subcommitte e headed b y W . G . Holtz. The tw osessions were presided over by W . G . Holtz, U. S . Bureau of Reclamationand W. S. Housel, University of Michigan, respectively .

One additional paper wit h discussion has been made a part o f th e pub -lication as rounding out th e discussion on triaxial testing , namely , a pape rby W. S. Housel which was originally presented before the Technical Sessionof th e Associatio n of Asphal t Paving Technologists, Februar y 5-6, 195 0 a tSt. Louis, Mo.

NOTE.—The Society is not responsible , as a body, for the statement sand opinions advanced in this publication.

CONTENTS

PAGE

Introduction—W. G. Holtz 1$ The History and Theory o f Triaxia l Testing, and the Preparation of Realistic Test

Specimens—A Report o f the Triaxia l Institute—V . A. Endersby 5Discussion 2 0

cSome Concepts Concernin g Triaxia l Compression Testin g of Asphaltic Paving Mix -tures and Subgrade Materials—F. N. Hveem and Harmer E. Davis 2 5

Discussion 4 5Application o f the Triaxial Test to Bituminous Mixtures California Research Corpora -

tion Method—V. R. Smith 5 5Joint Discussion 7 3

* Application o f Triaxial Testing to th e Desig n o f Bituminous Pavements—Norma nW. McLeod 7 9

0Triaxial Desig n Correlate d with Flexibl e Pavement Performanc e in Kansas—H. E .Worley 11 2

Discussion 13 7Triaxial Testin g Adapte d to Soils , Flexible Base, and Foundations—R. J. Hank.. . . 13 8A Triaxial Apparatu s fo r Testing Large Soi l Specimens—Earl B. Hall 15 2

Discussion 16 2Shear Testing at the Waterways Experiment Station—Stanley J. Johnson 16 5

Discussion 17 7A Triaxial Shea r Investigation o n a Partially Saturate d Soil—Donak f W. Taylor... 18 0

Discussion 18 8Shear Characteristics of Remolded Earth Materials—A. A. Wagner 19 2

Discussion 22 4/^Application o f Triaxial Compressio n Test Result s to Highway Soi l Problems—E. S.

Barber an d C . L . Sawyer . . ~ 228The Importance o f Natural Controllin g Conditions Upon Triaxial Compressio n Test

Conditions—Donald M. Burmister 24 8Interpretation o f Triaxia l Compressio n Test s o n Granula r Mixtures—Willia m S .

Housel 26 7Discussion 27 7

General Discussion.. 29 6