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Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Sh...
Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105703
ISBN  
9798263308001
DDC  
620
저자명  
Idries, Abedalqader Ahmad Abedalqader.
서명/저자  
Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
발행사항  
[Sl] : University of Illinois at Urbana-Champaign, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
396 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Stark, Timothy D.
학위논문주기  
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2024.
초록/해제  
요약Thermal integrity profile (TIP) and crosshole sonic logging (CSL) tests were performed on three test drilled shafts at three different locations in Illinois with pre-planned flaws installed to determine which technology is effective at identifying installed flaws. Using preliminary analysis methods, TIP testing was found to be more effective than CSL in identifying installed flaws outside the rebar cage. Conversely, CSL was found to be better than TIP at identifying installed flaws at the bottom or toe of the drilled shaft. TIP results at one-half the time to peak temperature were found to provide better identification of flaws than at the time to peak temperature. However, this study also shows that TIP results could provide the best identification of flaws at the end of the acceleration stage (stage 3) of concrete hydration, which has the highest rate of temperature increase with time and happens to be at one-quarter of the time to peak temperature. Concrete coring near the rebar cage was shown to provide better identification of the flaws than coring at the center of the drilled shaft because the flaws tend to be pushed toward the perimeter of the drilled shaft during concrete placement. The findings of this study were used to create a decision flowchart that can be used to assist practicing engineers in the selection of the most appropriate nondestructive testing for drilled shafts in Illinois. In addition, modifications to the existing TIP and CSL specifications were proposed. Level 2 analysis was also performed on all three test drilled shafts using superimposed construction logs and concrete yield data with hyperbolic correction for shaft ends. It was found in this study that current TIP testing interpretation methods don't provide a reference temperature to be compared with those measured from TIP testing. Therefore, a numerical model was constructed using COMSOL Multiphysics® software package to numerically model concrete heat of hydration for these three drilled shafts during curing. The 3D numerical results were validated and matched the temperatures at one-half the time and full time to the peak temperature measured by the TIP wires for all three drilled shafts. Additionally, measured temperatures with time at different depths in all drilled shafts also match the modeled temperatures with time profiles. The pre-planned flaws installed in the three test drilled shafts, which consist of soil inclusions and tremie pipe raises, were successfully modeled in this study and are reflected in the measured TIP temperature data. Concrete heat of hydration of drilled shafts was found to be insensitive to soil type and its initial temperature. The concept of mass concrete is discussed in this chapter as well in terms of maximum temperature at the center of large drilled shafts and the difference between the temperature at the center and near the soil concrete interface based on the guidelines from ACI and IDOT. It was shown that the initial concrete temperature has the largest influence on the peak temperature at the center of the drilled shaft and on the maximum temperature difference. The validated 3D numerical model developed herein was used to create a user-friendly application to assess engineers in the interpretation of TIP data for future drilled shafts. This application provides a reference temperature for measured TIP data to be compared with the measured temperature along with the measured bottom roll-off temperature profiles.
일반주제명  
Engineering
일반주제명  
Energy
일반주제명  
Materials science
키워드  
Drilled shafts
키워드  
Deep foundation
키워드  
Thermal integrity profile
키워드  
Crosshole sonic logging
키워드  
Non-destructive testing
키워드  
Concrete heat of hydration
기타저자  
University of Illinois at Urbana-Champaign Civil & Environmental Eng
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aIdries,  Abedalqader  Ahmad  Abedalqader.
■24510▼aThermal  Integrity  Profiling  (TIP)  and  Crosshole  Sonic  Logging  (CSL)  Testing  for  Drilled  Shafts
■260    ▼a[Sl]▼bUniversity  of  Illinois  at  Urbana-Champaign▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a396  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Stark,  Timothy  D.
■5021  ▼aThesis  (Ph.D.)--University  of  Illinois  at  Urbana-Champaign,  2024.
■520    ▼aThermal  integrity  profile  (TIP)  and  crosshole  sonic  logging  (CSL)  tests  were  performed  on  three  test  drilled  shafts  at  three  different  locations  in  Illinois  with  pre-planned  flaws  installed  to  determine  which  technology  is  effective  at  identifying  installed  flaws.  Using  preliminary  analysis  methods,  TIP  testing  was  found  to  be  more  effective  than  CSL  in  identifying  installed  flaws  outside  the  rebar  cage.  Conversely,  CSL  was  found  to  be  better  than  TIP  at  identifying  installed  flaws  at  the  bottom  or  toe  of  the  drilled  shaft.  TIP  results  at  one-half  the  time  to  peak  temperature  were  found  to  provide  better  identification  of  flaws  than  at  the  time  to  peak  temperature.  However,  this  study  also  shows  that  TIP  results  could  provide  the  best  identification  of  flaws  at  the  end  of  the  acceleration  stage  (stage  3)  of  concrete  hydration,  which  has  the  highest  rate  of  temperature  increase  with  time  and  happens  to  be  at  one-quarter  of  the  time  to  peak  temperature.  Concrete  coring  near  the  rebar  cage  was  shown  to  provide  better  identification  of  the  flaws  than  coring  at  the  center  of  the  drilled  shaft  because  the  flaws  tend  to  be  pushed  toward  the  perimeter  of  the  drilled  shaft  during  concrete  placement.  The  findings  of  this  study  were  used  to  create  a  decision  flowchart  that  can  be  used  to  assist  practicing  engineers  in  the  selection  of  the  most  appropriate  nondestructive  testing  for  drilled  shafts  in  Illinois.  In  addition,  modifications  to  the  existing  TIP  and  CSL  specifications  were  proposed.  Level  2  analysis  was  also  performed  on  all  three  test  drilled  shafts  using  superimposed  construction  logs  and  concrete  yield  data  with  hyperbolic  correction  for  shaft  ends.                          It  was  found  in  this  study  that  current  TIP  testing  interpretation  methods  don't  provide  a  reference  temperature  to  be  compared  with  those  measured  from  TIP  testing.  Therefore,  a  numerical  model  was  constructed  using  COMSOL  Multiphysics®  software  package  to  numerically  model  concrete  heat  of  hydration  for  these  three  drilled  shafts  during  curing.  The  3D  numerical  results  were  validated  and  matched  the  temperatures  at  one-half  the  time  and  full  time  to  the  peak  temperature  measured  by  the  TIP  wires  for  all  three  drilled  shafts.  Additionally,  measured  temperatures  with  time  at  different  depths  in  all  drilled  shafts  also  match  the  modeled  temperatures  with  time  profiles.  The  pre-planned  flaws  installed  in  the  three  test  drilled  shafts,  which  consist  of  soil  inclusions  and  tremie  pipe  raises,  were  successfully  modeled  in  this  study  and  are  reflected  in  the  measured  TIP  temperature  data.  Concrete  heat  of  hydration  of  drilled  shafts  was  found  to  be  insensitive  to  soil  type  and  its  initial  temperature.  The  concept  of  mass  concrete  is  discussed  in  this  chapter  as  well  in  terms  of  maximum  temperature  at  the  center  of  large  drilled  shafts  and  the  difference  between  the  temperature  at  the  center  and  near  the  soil  concrete  interface  based  on  the  guidelines  from  ACI  and  IDOT.  It  was  shown  that  the  initial  concrete  temperature  has  the  largest  influence  on  the  peak  temperature  at  the  center  of  the  drilled  shaft  and  on  the  maximum  temperature  difference.  The  validated  3D  numerical  model  developed  herein  was  used  to  create  a  user-friendly  application  to  assess  engineers  in  the  interpretation  of  TIP  data  for  future  drilled  shafts.  This  application  provides  a  reference  temperature  for  measured  TIP  data  to  be  compared  with  the  measured  temperature  along  with  the  measured  bottom  roll-off  temperature  profiles.
■590    ▼aSchool  code:  0090.
■650  4▼aEngineering
■650  4▼aEnergy
■650  4▼aMaterials  science
■653    ▼aDrilled  shafts
■653    ▼aDeep  foundation
■653    ▼aThermal  integrity  profile
■653    ▼aCrosshole  sonic  logging
■653    ▼aNon-destructive  testing
■653    ▼aConcrete  heat  of  hydration
■690    ▼a0543
■690    ▼a0794
■690    ▼a0537
■690    ▼a0791
■71020▼aUniversity  of  Illinois  at  Urbana-Champaign▼bCivil  &  Environmental  Eng.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0090
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361082▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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