Abstract

This paper employs a numerical simulation strategy to elucidate the influence of phase change materials (PCMs) on the thermal response of concrete pavements. Simulations of both the early- and late-age response of concrete pavements containing microencapsulated PCMs, with considerations of mixture proportions, PCM types, and structural and environmental boundary conditions, are carried out. The latent-heat response of PCMs is explicitly integrated into the model. The early-age simulations show significant reductions in peak hydration temperature and the heating/cooling rates when PCMs, either as a partial replacement of the cement paste or fine aggregates, are incorporated in concrete, resulting in reduced cracking probabilities. Simulations on mature pavements also indicate temperature and curling stress reductions when appropriate PCMs are used. PCM type(s) and dosage, depending on the imposed external temperature regimen, can be chosen based on the model to reduce the magnitude of critical stresses at both early- and late ages. The numerical model thus enables engineers and designers rationally design crack-resistant concrete pavements.

Original languageEnglish (US)
Pages (from-to)11-24
Number of pages14
JournalCement and Concrete Composites
Volume81
DOIs
StatePublished - Aug 1 2017

Fingerprint

Concrete pavements
Phase change materials
Computer simulation
Adhesive pastes
Latent heat
Ointments
Hot Temperature
Pavements
Hydration
Temperature
Numerical models
Cements
Boundary conditions
Concretes
Cooling
Cracks
Heating
Engineers

Keywords

  • Cracking probability
  • Critical stress
  • Early-age
  • Phase change materials
  • Thermal modeling

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

@article{4c8a3757861140a28fbd4f9ad1c30ad2,
title = "Numerical simulations to quantify the influence of phase change materials (PCMs) on the early- and later-age thermal response of concrete pavements",
abstract = "This paper employs a numerical simulation strategy to elucidate the influence of phase change materials (PCMs) on the thermal response of concrete pavements. Simulations of both the early- and late-age response of concrete pavements containing microencapsulated PCMs, with considerations of mixture proportions, PCM types, and structural and environmental boundary conditions, are carried out. The latent-heat response of PCMs is explicitly integrated into the model. The early-age simulations show significant reductions in peak hydration temperature and the heating/cooling rates when PCMs, either as a partial replacement of the cement paste or fine aggregates, are incorporated in concrete, resulting in reduced cracking probabilities. Simulations on mature pavements also indicate temperature and curling stress reductions when appropriate PCMs are used. PCM type(s) and dosage, depending on the imposed external temperature regimen, can be chosen based on the model to reduce the magnitude of critical stresses at both early- and late ages. The numerical model thus enables engineers and designers rationally design crack-resistant concrete pavements.",
keywords = "Cracking probability, Critical stress, Early-age, Phase change materials, Thermal modeling",
author = "Aashay Arora and Gaurav Sant and Narayanan Neithalath",
year = "2017",
month = "8",
day = "1",
doi = "10.1016/j.cemconcomp.2017.04.006",
language = "English (US)",
volume = "81",
pages = "11--24",
journal = "Cement and Concrete Composites",
issn = "0958-9465",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Numerical simulations to quantify the influence of phase change materials (PCMs) on the early- and later-age thermal response of concrete pavements

AU - Arora, Aashay

AU - Sant, Gaurav

AU - Neithalath, Narayanan

PY - 2017/8/1

Y1 - 2017/8/1

N2 - This paper employs a numerical simulation strategy to elucidate the influence of phase change materials (PCMs) on the thermal response of concrete pavements. Simulations of both the early- and late-age response of concrete pavements containing microencapsulated PCMs, with considerations of mixture proportions, PCM types, and structural and environmental boundary conditions, are carried out. The latent-heat response of PCMs is explicitly integrated into the model. The early-age simulations show significant reductions in peak hydration temperature and the heating/cooling rates when PCMs, either as a partial replacement of the cement paste or fine aggregates, are incorporated in concrete, resulting in reduced cracking probabilities. Simulations on mature pavements also indicate temperature and curling stress reductions when appropriate PCMs are used. PCM type(s) and dosage, depending on the imposed external temperature regimen, can be chosen based on the model to reduce the magnitude of critical stresses at both early- and late ages. The numerical model thus enables engineers and designers rationally design crack-resistant concrete pavements.

AB - This paper employs a numerical simulation strategy to elucidate the influence of phase change materials (PCMs) on the thermal response of concrete pavements. Simulations of both the early- and late-age response of concrete pavements containing microencapsulated PCMs, with considerations of mixture proportions, PCM types, and structural and environmental boundary conditions, are carried out. The latent-heat response of PCMs is explicitly integrated into the model. The early-age simulations show significant reductions in peak hydration temperature and the heating/cooling rates when PCMs, either as a partial replacement of the cement paste or fine aggregates, are incorporated in concrete, resulting in reduced cracking probabilities. Simulations on mature pavements also indicate temperature and curling stress reductions when appropriate PCMs are used. PCM type(s) and dosage, depending on the imposed external temperature regimen, can be chosen based on the model to reduce the magnitude of critical stresses at both early- and late ages. The numerical model thus enables engineers and designers rationally design crack-resistant concrete pavements.

KW - Cracking probability

KW - Critical stress

KW - Early-age

KW - Phase change materials

KW - Thermal modeling

UR - http://www.scopus.com/inward/record.url?scp=85018795144&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018795144&partnerID=8YFLogxK

U2 - 10.1016/j.cemconcomp.2017.04.006

DO - 10.1016/j.cemconcomp.2017.04.006

M3 - Article

VL - 81

SP - 11

EP - 24

JO - Cement and Concrete Composites

JF - Cement and Concrete Composites

SN - 0958-9465

ER -