Below-Ground Performance of Rigid Polystyrene Foam Insulation: Review of Effective Thermal Resistivity Values Used in ASCE Standard 32-01—Design and Construction of Frost-Protected Shallow Foundations

Crandell, Jay H.

doi:10.1061/(asce)cr.1943-5495.0000012

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…ermal insulation materials are divided into organic (e.g., extruded polystyrene (XPS) and expanded polystyrene (EPS)) and inorganic materials (hydrophobic expanded perlite (HEP)). e engineering application of XPS and EPS, as organic materials, is affected by the moisture content and high temperature: (1) the heat transfer coefficient increases with the increase of water content [3][4][5]; (2) the flammability of materials threatens the safety of structures [6][7][8]. e high temperature resistance of HEP, as an inorganic material, is relatively stable, while the thermal transfer coefficient is high due to the strong water absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Shaking Table Test of a New Type Insulation Decorative Block Wall under Out-of-Plane Loading

Yin

et al. 2022

Shock and Vibration

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In order to solve the problems of complex construction, poor weather resistance, and environmental pollution of conventional thermal insulation materials, this paper introduces a new type of insulation decorative block (IDB) filled with insulation materials. Different anchoring methods were adopted to study the influence of anchor bolts on the out-of-plane mechanical properties of IDB walls. The test results revealed that the anchor bolts could effectively prevent the appearance and development of cracks in the specimens. With the increase of anchor bolts, the acceleration and displacement of the IDB walls decreased. Compared to rectangular arrangement, the staggered pattern of anchor bolts could reduce the relative displacement and acceleration. The structural calculation of IDB walls was carried out to determine the number of anchor bolts at different heights, and design suggestions were given to improve the performance of IDB walls. The analysis and test results indicated that the IDB is suitable for application in engineering structures.

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Section: Introductionmentioning

confidence: 99%

Shaking Table Test of a New Type Insulation Decorative Block Wall under Out-of-Plane Loading

Yin

et al. 2022

Shock and Vibration

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“…However, suspension polymerization gives the least unreacted monomer in production and is free from most of the disadvantages that occur in bulk polymerization, which requires the presence of radical initiators [11]. Polystyrene enriched with foaming agents is applicable to the production of expanded polystyrene (EPS) [12][13][14], with cellular structure. Polystyrene in the form of beads containing foaming agents is obtained in the suspension polymerization of styrene with the addition of blowing agents or low boiling liquids, e.g., pentane, butane, or propane [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Among others, graphite (in the form of dust) has been used. Its presence in the walls of the expanded polystyrene (EPS) cell structure affects the limitation of the heat flow [13].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and Evaluation of Mechanical, Morphological, and Thermal Properties of Reduced Graphene Oxide-Reinforced Expanded Polystyrene (EPS) Nanocomposites

Rydzkowski

Reszka

Szczypiński

et al. 2020

Advances in Polymer Technology

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The aim of the present study is to examine the effect of the addition of carbon nanoparticles (σsp2 hybridization) on the mechanical properties of foamed polystyrene. In this work, we focus on the study of the impact of compressive stress, tensile strength, bending strength, thermal conductivity ratio (λ), and water absorption of expanded polystyrene (EPS) reinforced with reduced graphene oxide and graphite. The results were compared with pristine EPS and reduced graphene oxide-reinforced EPS. All the nanocomposite specimens used for testing had a similar density. The study reveals that the nanocomposites exhibit different thermal conductivities and mechanical properties in comparison to pristine EPS. The enhancement in the properties of the nanocomposite could be associated with a more extensive structure of elementary cells of expanded polystyrene granules.

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“…Expanded polystyrene panels are also used, with a rated R-value of 4-4.5/in., depending on the density of material chosen. Though commonly thought to be unaffected by moisture, the literature suggests that both rigid polystyrene products when installed below grade lose R-value over time because of an increase in moisture content (Crandell 2010;Horvath 1999). This degradation can be mitigated by ensuring positive drainage of water; both types of polystyrene do absorb significant amounts of water in very wet conditions, with a corresponding decrease in R-value.…”

Section: Materials Propertiesmentioning

confidence: 99%

Excavationless Exterior Foundation Insulation Exploratory Study

Mosimann

Wagner

Schirber

2013

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Below-Ground Performance of Rigid Polystyrene Foam Insulation: Review of Effective Thermal Resistivity Values Used in ASCE Standard 32-01—Design and Construction of Frost-Protected Shallow Foundations

Cited by 11 publications

References 3 publications

Shaking Table Test of a New Type Insulation Decorative Block Wall under Out-of-Plane Loading

Shaking Table Test of a New Type Insulation Decorative Block Wall under Out-of-Plane Loading

Manufacturing and Evaluation of Mechanical, Morphological, and Thermal Properties of Reduced Graphene Oxide-Reinforced Expanded Polystyrene (EPS) Nanocomposites

Excavationless Exterior Foundation Insulation Exploratory Study

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