A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements
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 × 10 6 (34.5-37.2 GPa) to 4.0-4.3 × 10 6 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 × 10 6 psi (34.5 GPa) after 15,000 passes.
Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements
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 × 10 6 (34.5-37.2 GPa) to 4.0-4.3 × 10 6 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 × 10 6 psi (34.5 GPa) after 15,000 passes.
Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements
Cunliffe, Charles (author) / Mehta, Yusuf A / Cleary, Douglas / Ali, Ayman / Redles, Thomas
2016
Article (Journal)
English
Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements
| Taylor & Francis Verlag | 2016
Impact of dynamic loading on backcalculated stiffness of rigid airfield pavements
| Online Contents | 2015
Mechanistic Evaluation of Rigid Airfield Pavements
| Online Contents | 1995
Design of rigid overlays for airfield pavements
| TIBKAT | 1988