View in EDS

Effects of Thermal Conductivity of Soil on Temperature Development and Cracking in Mass Concrete Footings.

Saved in:
Bibliographic Details
Title: Effects of Thermal Conductivity of Soil on Temperature Development and Cracking in Mass Concrete Footings.
Authors: Do, Tu A.1, Lawrence, Adrian M.1, Tia, Mang1, Bergin, Michael J.2
Source: Journal of Testing & Evaluation. Sep2015, Vol. 43 Issue 5, p1078-1090. 13p.
Subjects: Soil thermal conductivity measurement, Thermal properties of soils, Concrete footings, Finite element method, Cracking of concrete, Mathematical models
Abstract: This paper presents the findings of an investigation on thermal behavior of mass concrete footings placed directly on soil using finite element analysis. A three-dimensional finite element model was developed to predict temperatures in a mass concrete footing-soil system and to assess cracking potential of the concrete at early age. Two bridge pier footings constructed in Florida were monitored for temperature development, and the measured temperatures were compared with the computed temperatures from the finite element model. The results show that the temperatures predicted by the model closely agree with those measured in the field. Several soils with varying thermal resistances were modeled in this study in order to find out which soils can be used as an insulator for mass concrete footings so that an insulation layer would not be needed at the bottom of the footings. The results suggest that dry sand and dry clay provide good insulation at the bottom of mass concrete footings, and soil with an R-value of 0.072 per m or greater (or thermal conductivity of 0.35 W/m-K or lower) would provide adequate insulation at the bottom of concrete footings to prevent early-age cracking in the concrete. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Testing & Evaluation is the property of ASTM International and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 109277161
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Effects of Thermal Conductivity of Soil on Temperature Development and Cracking in Mass Concrete Footings.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Do%2C+Tu+A%2E%22">Do, Tu A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lawrence%2C+Adrian+M%2E%22">Lawrence, Adrian M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tia%2C+Mang%22">Tia, Mang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bergin%2C+Michael+J%2E%22">Bergin, Michael J.</searchLink><relatesTo>2</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Testing+%26+Evaluation%22">Journal of Testing & Evaluation</searchLink>. Sep2015, Vol. 43 Issue 5, p1078-1090. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Soil+thermal+conductivity+measurement%22">Soil thermal conductivity measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties+of+soils%22">Thermal properties of soils</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+footings%22">Concrete footings</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Cracking+of+concrete%22">Cracking of concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper presents the findings of an investigation on thermal behavior of mass concrete footings placed directly on soil using finite element analysis. A three-dimensional finite element model was developed to predict temperatures in a mass concrete footing-soil system and to assess cracking potential of the concrete at early age. Two bridge pier footings constructed in Florida were monitored for temperature development, and the measured temperatures were compared with the computed temperatures from the finite element model. The results show that the temperatures predicted by the model closely agree with those measured in the field. Several soils with varying thermal resistances were modeled in this study in order to find out which soils can be used as an insulator for mass concrete footings so that an insulation layer would not be needed at the bottom of the footings. The results suggest that dry sand and dry clay provide good insulation at the bottom of mass concrete footings, and soil with an R-value of 0.072 per m or greater (or thermal conductivity of 0.35 W/m-K or lower) would provide adequate insulation at the bottom of concrete footings to prevent early-age cracking in the concrete. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Testing & Evaluation is the property of ASTM International and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=109277161
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1520/JTE20140026
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 1078
    Subjects:
      – SubjectFull: Soil thermal conductivity measurement
        Type: general
      – SubjectFull: Thermal properties of soils
        Type: general
      – SubjectFull: Concrete footings
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Cracking of concrete
        Type: general
      – SubjectFull: Mathematical models
        Type: general
    Titles:
      – TitleFull: Effects of Thermal Conductivity of Soil on Temperature Development and Cracking in Mass Concrete Footings.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Do, Tu A.
      – PersonEntity:
          Name:
            NameFull: Lawrence, Adrian M.
      – PersonEntity:
          Name:
            NameFull: Tia, Mang
      – PersonEntity:
          Name:
            NameFull: Bergin, Michael J.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 09
              Text: Sep2015
              Type: published
              Y: 2015
          Identifiers:
            – Type: issn-print
              Value: 00903973
          Numbering:
            – Type: volume
              Value: 43
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Journal of Testing & Evaluation
              Type: main
ResultId 1