The adjustment of pavement deflections due to temperature variations

Jorge Pais, Caio Santos, Paulo Pereira, Kamil Kaloush

Research output: Contribution to journalArticle

Abstract

One of the most important steps in the rehabilitation of flexible pavements is the evaluation of their bearing capacity, which is used to assess the moduli of the pavement layers. The evaluation of the bearing capacity is usually carried out by measuring pavement deflections using a Falling Weight Deflectometer (FWD). This evaluation is undertaken in equally spaced points, usually 100 metres apart, with temperature variations throughout the day. Due to the viscoelastic behaviour of the asphalt layers, these FWD measurements are influenced by the pavement temperature, and the moduli can only be compared if they correspond to the same temperature. Thus, this work develops a model to adjust the pavement deflections to a reference temperature based on the characteristics of the pavement; namely: the asphalt layer thickness, subgrade stiffness, the distance between the FWD sensors, the load magnitude, and the pavement temperature.

Original languageEnglish (US)
JournalInternational Journal of Pavement Engineering
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

Pavements
Temperature
Bearing capacity
Asphalt
Weighing
Patient rehabilitation
Stiffness
Sensors

Keywords

  • deflections
  • falling weight deflectometer
  • pavement modelling
  • Pavements
  • temperature

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

Cite this

The adjustment of pavement deflections due to temperature variations. / Pais, Jorge; Santos, Caio; Pereira, Paulo; Kaloush, Kamil.

In: International Journal of Pavement Engineering, 01.01.2018.

Research output: Contribution to journalArticle

@article{a87f480bbbbe471aa0a07cd54e95523b,
title = "The adjustment of pavement deflections due to temperature variations",
abstract = "One of the most important steps in the rehabilitation of flexible pavements is the evaluation of their bearing capacity, which is used to assess the moduli of the pavement layers. The evaluation of the bearing capacity is usually carried out by measuring pavement deflections using a Falling Weight Deflectometer (FWD). This evaluation is undertaken in equally spaced points, usually 100 metres apart, with temperature variations throughout the day. Due to the viscoelastic behaviour of the asphalt layers, these FWD measurements are influenced by the pavement temperature, and the moduli can only be compared if they correspond to the same temperature. Thus, this work develops a model to adjust the pavement deflections to a reference temperature based on the characteristics of the pavement; namely: the asphalt layer thickness, subgrade stiffness, the distance between the FWD sensors, the load magnitude, and the pavement temperature.",
keywords = "deflections, falling weight deflectometer, pavement modelling, Pavements, temperature",
author = "Jorge Pais and Caio Santos and Paulo Pereira and Kamil Kaloush",
year = "2018",
month = "1",
day = "1",
doi = "10.1080/10298436.2018.1557334",
language = "English (US)",
journal = "International Journal of Pavement Engineering",
issn = "1029-8436",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - The adjustment of pavement deflections due to temperature variations

AU - Pais, Jorge

AU - Santos, Caio

AU - Pereira, Paulo

AU - Kaloush, Kamil

PY - 2018/1/1

Y1 - 2018/1/1

N2 - One of the most important steps in the rehabilitation of flexible pavements is the evaluation of their bearing capacity, which is used to assess the moduli of the pavement layers. The evaluation of the bearing capacity is usually carried out by measuring pavement deflections using a Falling Weight Deflectometer (FWD). This evaluation is undertaken in equally spaced points, usually 100 metres apart, with temperature variations throughout the day. Due to the viscoelastic behaviour of the asphalt layers, these FWD measurements are influenced by the pavement temperature, and the moduli can only be compared if they correspond to the same temperature. Thus, this work develops a model to adjust the pavement deflections to a reference temperature based on the characteristics of the pavement; namely: the asphalt layer thickness, subgrade stiffness, the distance between the FWD sensors, the load magnitude, and the pavement temperature.

AB - One of the most important steps in the rehabilitation of flexible pavements is the evaluation of their bearing capacity, which is used to assess the moduli of the pavement layers. The evaluation of the bearing capacity is usually carried out by measuring pavement deflections using a Falling Weight Deflectometer (FWD). This evaluation is undertaken in equally spaced points, usually 100 metres apart, with temperature variations throughout the day. Due to the viscoelastic behaviour of the asphalt layers, these FWD measurements are influenced by the pavement temperature, and the moduli can only be compared if they correspond to the same temperature. Thus, this work develops a model to adjust the pavement deflections to a reference temperature based on the characteristics of the pavement; namely: the asphalt layer thickness, subgrade stiffness, the distance between the FWD sensors, the load magnitude, and the pavement temperature.

KW - deflections

KW - falling weight deflectometer

KW - pavement modelling

KW - Pavements

KW - temperature

UR - http://www.scopus.com/inward/record.url?scp=85058697959&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058697959&partnerID=8YFLogxK

U2 - 10.1080/10298436.2018.1557334

DO - 10.1080/10298436.2018.1557334

M3 - Article

JO - International Journal of Pavement Engineering

JF - International Journal of Pavement Engineering

SN - 1029-8436

ER -