Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements

Charles Cunliffe, Yusuf Mehta, Douglas Cleary, Ayman Ali, Thomas Redles

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The objective of this paper was to evaluate the deterioration of Portland Cement Concrete (PCC) slabs throughout trafficking. A full-scale accelerated pavement testing at the National Airport Pavement Test Facility (NAPTF) was conducted on Construction Cycle 6 (CC6) on rigid pavements with low, medium and high flexural strengths on both a concrete and asphalt stabilised base. Heavy Weight Deflectometer (HWD) testing was conducted on the test sections to backcalculate the stiffness of the layers. The majority of PCC deterioration occurred roughly within the first 1500-2000 passes of trafficking. On average, the MRS-1 (low flexural strength) PCC elastic modulus was found to decrease by 20%, from 5.0-.4 × 106 (34.5-37.2 GPa) to 4.0-4.3 × 106 psi (27.6-29.7 GPa), whereas the PCC elastic modulus of MRS-2 and MRS-3 was found to decrease by 17% and 22%, respectively. However, neither the MRS-2 nor MRS-3 elastic modulus was found to drop below 5.0 × 106 psi (34.5 GPa) after 15,000 passes.

Original languageEnglish (US)
Pages (from-to)489-502
Number of pages14
JournalInternational Journal of Pavement Engineering
Volume17
Issue number6
DOIs
StatePublished - Jul 2 2016

Fingerprint

Portland cement
Pavements
Stiffness
Concretes
Elastic moduli
Bending strength
Deterioration
Concrete slabs
Testing
Asphalt
Test facilities
Airports

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Civil and Structural Engineering

Cite this

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title = "Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements",
abstract = "The objective of this paper was to evaluate the deterioration of Portland Cement Concrete (PCC) slabs throughout trafficking. A full-scale accelerated pavement testing at the National Airport Pavement Test Facility (NAPTF) was conducted on Construction Cycle 6 (CC6) on rigid pavements with low, medium and high flexural strengths on both a concrete and asphalt stabilised base. Heavy Weight Deflectometer (HWD) testing was conducted on the test sections to backcalculate the stiffness of the layers. The majority of PCC deterioration occurred roughly within the first 1500-2000 passes of trafficking. On average, the MRS-1 (low flexural strength) PCC elastic modulus was found to decrease by 20{\%}, from 5.0-.4 × 106 (34.5-37.2 GPa) to 4.0-4.3 × 106 psi (27.6-29.7 GPa), whereas the PCC elastic modulus of MRS-2 and MRS-3 was found to decrease by 17{\%} and 22{\%}, respectively. However, neither the MRS-2 nor MRS-3 elastic modulus was found to drop below 5.0 × 106 psi (34.5 GPa) after 15,000 passes.",
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Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements. / Cunliffe, Charles; Mehta, Yusuf; Cleary, Douglas; Ali, Ayman; Redles, Thomas.

In: International Journal of Pavement Engineering, Vol. 17, No. 6, 02.07.2016, p. 489-502.

Research output: Contribution to journalArticle

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