Title: Study of the lateral pressure of fresh concrete as related to the design of drilled shafts
Description: This is a little-known but very important study of the effect of concrete slump on the lateral pressure of fluid concrete in drilled shaft foundations.  A major conclusion of this study was that the concrete slump must be at least 9 inches in order for the full fluid weight of the concrete column to be exerted against the sides of the drilled shaft.  It is important to note that the test setup was of limited height (30 ft) and did not include the presence of a reinforcing cage in the test setup.  This report can be downloaded for free from [The Center for Transportation Research, The University of Texas (click to download a pdf copy now)][1].


  [1]: http://library.ctr.utexas.edu/dbtw-wpd/exec/dbtwpub.dll?AC=GET_RECORD&XC=/dbtw-wpd/exec/dbtwpub.dll&BU=http%3A%2F%2Flibrary.ctr.utexas.edu%2Fdbtw-wpd%2Ftextbase%2Fadvanced.htm&TN=catalog&SN=AUTO30002&SE=806&RN=1&MR=50&TR=0&TX=1000&ES=0&CS=2&XP=&RF=.Year+(newest+first)&EF=&DF=.Detail&RL=1&EL=0&DL=1&NP=3&ID=&MF=MYWPMSG.INI&MQ=&TI=0&DT=&ST=0&IR=379&NR=0&NB=0&SV=0&SS=1&BG=&FG=&QS=&OEX=ISO-8859-1&OEH=ISO-8859-1
Subjects: Concrete, Foundations, Testing, Slump, Workability, Load Transfer
People: Juan B. Bernal, Lymon C. Reese