Title: | Accelerated Pavement Testing Of Extended Life Continuously Reinforced Concrete Pavement Sections |
Author(s): | Kohler, Erwin; Roesler, Jeffrey |
Subject(s): | Concrete, Pavement, CRCP, Test Sections, Reinforcing steel, Transverse crack, Crack width, Crack width profile, Crack induction, Accelerated Pavement Testing, Punchouts |
Abstract: | Ten CRCP sections were built at the ATREL full-scale testing facility, with five sections being tested under
accelerated traffic loading conditions and five sections evaluated for induced transverse cracks. The opening
and closing of cracks was measured at several transverse cracks, along with vertical deflections, transverse
strains at the top of the slab, and internal pavement temperature. Two procedures were developed to determine
crack width from the measurement of crack closing. These procedures used the horizontal deformation caused
by changing the vertical load level or temperature condition to determine the in situ crack width. By calibrating
the crack width model presented in the mechanistic-empirical pavement design guide (ME-PDG), crack width
values obtained under different temperature conditions could be standardized. The model was adapted to
predict crack width at any depth in the slab and an enhancement is proposed to use the model for predicting
short-term changes in crack width. Continuous surveying of the pavements for more than two years and the
sequential application of a large number of rolling-wheel loads on each section allowed for the collection of
response data and observation of CRCP failure mechanism. Comparisons are presented regarding the elastic
responses in sections with different design features (PCC thickness, steel content, and steel depth). Under
conditions of small crack width (less than 0.15 mm), load transfer capacity at the transverse cracks remained
intact despite heavy traffic loads and seasonal thermal cycles. Failure of the CRCP sections resulted from
permanent deformation in the supporting layers. This report includes evaluation of crack width variability and
use of FWD to characterize in situ crack width of field CRC pavements. Recommendations are made for the
improvement of CRCP construction based on early age temperature, concrete drying shrinkage, and induction
of transverse cracks. |
Issue Date: | 2006-12 |
Series/Report: | FHWA-IL-UI-289 |
Genre: | Technical Report |
Type: | Text |
Language: | English |
URI: | http://hdl.handle.net/2142/46013 |
ISSN: | 0197-9191 |
Publication Status: | published or submitted for publication |
Peer Reviewed: | not peer reviewed |
Sponsor: | Illinois Department of Transportation IHR-R32 |
Rights Information: | No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161 |
Date Available in IDEALS: | 2013-11-14 |