Thermal Evaluation of Common Locations of Heat Loss in Sandwich Wall Panels

Sorensen, Taylor; Dorafshan, Sattar; Maguire, Marc

doi:10.1061/9780784481011.017

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…Thermal bridging is still a significant challenge for precast concrete sandwich wall panels, particularly in structurally composite panels. 3,4 Figure 2 presents thermal images of precast concrete sandwich wall panels showing the amount of thermal bridging when using fiber-reinforced polymer (FRP) connectors to the amount caused by steel truss connectors. Many proprietary FRP wythe connector solutions have been proposed to achieve full composite action without thermal bridging.…”

Section: Sandwich Wall Panels Have Been Produced In the Unitedmentioning

confidence: 99%

“…9 For noncomposite panel design, the flexural design for the noncomposite panel is the same as for solid panels and the applied loads are distributed to each wythe depending on the stiffness for the individual wythe. Equations ( 1) through (3) show the percentage of total load carried by the individual wythes prior to cracking.…”

Section: Sandwich Wall Panels Have Been Produced In the Unitedmentioning

confidence: 99%

“…The purpose of developing a simple model that relies only on springs and beam elements is that it can be used to model a panel with any connector type, repetitively, with little to no change between analyses. It also relies only on shear testing data, which some connector companies already have from International Code Council Evaluation Service (ICC-ES) acceptance criteria, specifically ICC-ES AC320 21 or AC422 22 and ASTM E488-96, 3 or some form of custom in-house testing.…”

Section: Beam-spring Modelmentioning

confidence: 99%

See 2 more Smart Citations

Evaluating Elastic Behavior for Partially Composite Precast Concrete Sandwich Wall Panels

Al-Rubaye¹,

Sorensen²,

Olsen³

et al. 2018

PCIJ

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Section: Sandwich Wall Panels Have Been Produced In the Unitedmentioning

confidence: 99%

Section: Sandwich Wall Panels Have Been Produced In the Unitedmentioning

confidence: 99%

Section: Beam-spring Modelmentioning

confidence: 99%

See 1 more Smart Citation

Evaluating Elastic Behavior for Partially Composite Precast Concrete Sandwich Wall Panels

Al-Rubaye¹,

Sorensen²,

Olsen³

et al. 2018

PCIJ

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“…Insulated concrete sandwich wall panels (ICSWPs) are becoming more popular as the industry continues to move toward more thermally efficient buildings [1,2]. ICSWPs consist of two wythes of concrete that sandwich a layer of insulation.…”

Section: Introductionmentioning

confidence: 99%

Out-of-Plane Flexural Behavior of Insulated Wall Panels Constructed with Large Insulation Thicknesses

Luebke,

Pozo-Lora,

Al-Rubaye

et al. 2023

Materials

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Insulated concrete sandwich wall panels (ICSWPs) are gaining popularity as energy regulations become stricter worldwide. ICSWPs are now being constructed with thinner wythes and thicker insulation to keep up with the changing market, which is reducing material costs and increasing thermal and structural efficiency. However, there is a need for adequate experimental testing to validate the current design methods for these new panels. This research aims to provide that validation by comparing the predictions of four different methods with experimental data obtained from six large-scale panels. The study found that while current design methods adequately predict the behavior of thin wythe and thick insulation ICSWPs within the elastic region, they do not accurately predict their ultimate capacity.

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“…The results show that the thermal resistance mainly depends on the thickness of the insulation layer. Sorensen et al (2017) conducted infrared imaging examination of the sandwich walls. The results show that great heat loss occurs at the joints of the insulation layer.…”

Section: Introductionmentioning

confidence: 99%

Study on axial compression bearing capacity of in-sulated sandwich concrete wall with embedded columns

Qiao

Tian

Yuan

et al. 2022

Advances in Structural Engineering

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An insulated sandwich concrete wall with embedded columns (ISCW-EC) is proposed by introducing horizontal reinforcements and cold formed steel embedded columns to the traditional insulated sandwich concrete wall. Axial compression load tests were performed on two full-scale specimens with different horizontal reinforcement spacings to investigate the failure mode of ISCW-EC. The failure patterns of both specimens are the same: splitting cracks present at the bottom of specimen and local buckling occurs at the bottom of the embedded column. The test results show that the specimen with smaller horizontal reinforcement spacing has smaller cracking load, lower secant stiffness, lower ductility and higher compression bearing capacity. Based on the test results, refined finite element models were established to perform a multi-parameter analysis in which the influences of horizontal reinforcement spacing, embedded column spacing, concrete strength and steel wire diameter are studied. The multi-parameter analysis results show that the increase of concrete strength and wire diameter improve the axial compression bearing capacity while the increase of the horizontal reinforcement spacing and embedded column spacing reduce it. Finally, the calculation formula of axial compression capacity of ISCW-EC is put forward based on both test and finite element analysis results.

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Thermal Evaluation of Common Locations of Heat Loss in Sandwich Wall Panels

Cited by 6 publications

References 3 publications

Evaluating Elastic Behavior for Partially Composite Precast Concrete Sandwich Wall Panels

Evaluating Elastic Behavior for Partially Composite Precast Concrete Sandwich Wall Panels

Out-of-Plane Flexural Behavior of Insulated Wall Panels Constructed with Large Insulation Thicknesses

Study on axial compression bearing capacity of in-sulated sandwich concrete wall with embedded columns

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