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Advancing the Sustainable and Acoustic Design of Concrete Structures
Advancing the Sustainable and Acoustic Design of Concrete Structures
Advancing the Sustainable and Acoustic Design of Concrete Structures

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자료유형  
 학위논문 서양
최종처리일시  
20250211152112
ISBN  
9798384211112
DDC  
300
저자명  
Broyles, Jonathan Michael.
서명/저자  
Advancing the Sustainable and Acoustic Design of Concrete Structures
발행사항  
[Sl] : The Pennsylvania State University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
430 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: A.
주기사항  
Advisor: Brown, Nathan C.
학위논문주기  
Thesis (Ph.D.)--The Pennsylvania State University, 2024.
초록/해제  
요약The building and construction sector contributes 35-40% of global carbon emissions, with concrete attributed to around 7% of global carbon emissions. With the substantial volume of concrete used in building floor systems, design practitioners and engineers are increasingly tasked to identify concrete floor systems with the least amount of embodied carbon (EC) emissions. A prominent EC reduction pathway is through the removal of structurally unnecessary concrete material in floors. This low-carbon pathway is directly applicable in the selection of more material-efficient concrete floor systems in buildings, as several concrete systems exist that are more material-efficient than conventional concrete slabs. Further concrete material reductions can be realized at the component scale when optimization frameworks are employed to determine non-traditional floor forms that improve upon the material efficiency of conventional systems. While existing concrete floor systems can reduce the EC emissions by up to 50%, greater EC savings can be achieved through the design of optimized components. However, challenges have hindered both the selection of low-carbon conventional concrete floor systems and the realization of optimized components.Material-efficient concrete floor systems have been designed, engineered, and constructed for many years; however, identifying the floor system with the lowest EC emissions has been restricted due to the variety of floor system types, the bevy of possible design scenarios, and the uncertainty of the carbon footprint of concrete mixtures. Additionally, the selection of a low-carbon floor system can happen in early-stage design phases, potentially restricting the consideration of alternative systems, especially when design parameters are loosely defined. Furthermore, the design of a concrete floor system may be controlled by non-structural objectives. Secondary objectives such as fire-resistance, acoustic insulation, and vibrations may influence the design of a concrete floor structure, further complicating the selection of a low-carbon concrete system. These limitations currently impede how designers can identify which concrete floor system has the largest EC savings when considering various design scenarios and performance goals.While optimized concrete components have been found to achieve material savings up to 70% when compared to conventional concrete slabs, their implementation has been restricted because floors influence additional design performance goals. Several researchers have evaluated how secondary considerations, like walking vibrations, can be influenced by the design of optimized components, yet air- and structure-borne insulation performance has been less studied. Although air-borne sound insulation of optimized concrete floors can be adequately estimated using analytical expressions, a high-resolution numerical model is necessary to quantify impact sound insulation. However, computational resource restrictions limit simulating the full-frequency radiated sound power needed to evaluate impact insulation. An additional challenge when evaluating optimized floors for acoustic insulation is that the existing sound transmission metrics have known functional limitations that can inflate or penalize the true acoustic performance of a concrete component. As a result of these challenges, little research has evaluated the performance of optimized concrete components for acoustic performance and other design goals.This dissertation responds to these research gaps by deriving equations and design tools to aid in the selection of a low-carbon concrete floor system, developing a new simulation method to quantify impact sound insulation, and proposing new sound transmission metrics to improve the acoustic assessment of optimized concrete components.
일반주제명  
Load
일반주제명  
Software
일반주제명  
Flooring
일반주제명  
Concrete
일반주제명  
Carbon
일반주제명  
Concrete slabs
일반주제명  
Concrete floors
일반주제명  
Insulation
일반주제명  
Acoustics
일반주제명  
Geometry
일반주제명  
Radiation
일반주제명  
Vibration
일반주제명  
Prescribed fire
일반주제명  
Design techniques
일반주제명  
Design
일반주제명  
Sustainability
기타저자  
The Pennsylvania State University.
기본자료저록  
Dissertations Abstracts International. 86-03A.
전자적 위치 및 접속  
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MARC

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■006m          o    d                
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■020    ▼a9798384211112
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■035    ▼a(MiAaPQ)PennState24343jmb1134
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a300
■1001  ▼aBroyles,  Jonathan  Michael.
■24510▼aAdvancing  the  Sustainable  and  Acoustic  Design  of  Concrete  Structures
■260    ▼a[Sl]▼bThe  Pennsylvania  State  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a430  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  A.
■500    ▼aAdvisor:  Brown,  Nathan  C.
■5021  ▼aThesis  (Ph.D.)--The  Pennsylvania  State  University,  2024.
■520    ▼aThe  building  and  construction  sector  contributes  35-40%  of  global  carbon  emissions,  with  concrete  attributed  to  around  7%  of  global  carbon  emissions.  With  the  substantial  volume  of  concrete  used  in  building  floor  systems,  design  practitioners  and  engineers  are  increasingly  tasked  to  identify  concrete  floor  systems  with  the  least  amount  of  embodied  carbon  (EC)  emissions.  A  prominent  EC  reduction  pathway  is  through  the  removal  of  structurally  unnecessary  concrete  material  in  floors.  This  low-carbon  pathway  is  directly  applicable  in  the  selection  of  more  material-efficient  concrete  floor  systems  in  buildings,  as  several  concrete  systems  exist  that  are  more  material-efficient  than  conventional  concrete  slabs.  Further  concrete  material  reductions  can  be  realized  at  the  component  scale  when  optimization  frameworks  are  employed  to  determine  non-traditional  floor  forms  that  improve  upon  the  material  efficiency  of  conventional  systems.  While  existing  concrete  floor  systems  can  reduce  the  EC  emissions  by  up  to  50%,  greater  EC  savings  can  be  achieved  through  the  design  of  optimized  components.  However,  challenges  have  hindered  both  the  selection  of  low-carbon  conventional  concrete  floor  systems  and  the  realization  of  optimized  components.Material-efficient  concrete  floor  systems  have  been  designed,  engineered,  and  constructed  for  many  years;  however,  identifying  the  floor  system  with  the  lowest  EC  emissions  has  been  restricted  due  to  the  variety  of  floor  system  types,  the  bevy  of  possible  design  scenarios,  and  the  uncertainty  of  the  carbon  footprint  of  concrete  mixtures.  Additionally,  the  selection  of  a  low-carbon  floor  system  can  happen  in  early-stage  design  phases,  potentially  restricting  the  consideration  of  alternative  systems,  especially  when  design  parameters  are  loosely  defined.  Furthermore,  the  design  of  a  concrete  floor  system  may  be  controlled  by  non-structural  objectives.  Secondary  objectives  such  as  fire-resistance,  acoustic  insulation,  and  vibrations  may  influence  the  design  of  a  concrete  floor  structure,  further  complicating  the  selection  of  a  low-carbon  concrete  system.  These  limitations  currently  impede  how  designers  can  identify  which  concrete  floor  system  has  the  largest  EC  savings  when  considering  various  design  scenarios  and  performance  goals.While  optimized  concrete  components  have  been  found  to  achieve  material  savings  up  to  70%  when  compared  to  conventional  concrete  slabs,  their  implementation  has  been  restricted  because  floors  influence  additional  design  performance  goals.  Several  researchers  have  evaluated  how  secondary  considerations,  like  walking  vibrations,  can  be  influenced  by  the  design  of  optimized  components,  yet  air-  and  structure-borne  insulation  performance  has  been  less  studied.  Although  air-borne  sound  insulation  of  optimized  concrete  floors  can  be  adequately  estimated  using  analytical  expressions,  a  high-resolution  numerical  model  is  necessary  to  quantify  impact  sound  insulation.  However,  computational  resource  restrictions  limit  simulating  the  full-frequency  radiated  sound  power  needed  to  evaluate  impact  insulation.  An  additional  challenge  when  evaluating  optimized  floors  for  acoustic  insulation  is  that  the  existing  sound  transmission  metrics  have  known  functional  limitations  that  can  inflate  or  penalize  the  true  acoustic  performance  of  a  concrete  component.  As  a  result  of  these  challenges,  little  research  has  evaluated  the  performance  of  optimized  concrete  components  for  acoustic  performance  and  other  design  goals.This  dissertation  responds  to  these  research  gaps  by  deriving  equations  and  design  tools  to  aid  in  the  selection  of  a  low-carbon  concrete  floor  system,  developing  a  new  simulation  method  to  quantify  impact  sound  insulation,  and  proposing  new  sound  transmission  metrics  to  improve  the  acoustic  assessment  of  optimized  concrete  components.
■590    ▼aSchool  code:  0176.
■650  4▼aLoad
■650  4▼aSoftware
■650  4▼aFlooring
■650  4▼aConcrete
■650  4▼aCarbon
■650  4▼aConcrete  slabs
■650  4▼aConcrete  floors
■650  4▼aInsulation
■650  4▼aAcoustics
■650  4▼aGeometry
■650  4▼aRadiation
■650  4▼aVibration
■650  4▼aPrescribed  fire
■650  4▼aDesign  techniques
■650  4▼aDesign
■650  4▼aSustainability
■690    ▼a0986
■690    ▼a0389
■690    ▼a0474
■690    ▼a0640
■71020▼aThe  Pennsylvania  State  University.
■7730  ▼tDissertations  Abstracts  International▼g86-03A.
■790    ▼a0176
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162917▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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