Progress Report on Concrete Mix Designs for O’Hare Modernization Plan. University of Illinois Department of Civil and Environmental Engineering . July 14, 2005. Project Goal.
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O’Hare Modernization Plan
University of Illinois
Department of Civil and Environmental Engineering
July 14, 2005
Investigate cost-effective concrete properties and pavement design features required to achieve long-term pavement performance at Chicago O’Hare International.
Material constituents and mix design
Analysis of existing concrete mix designs
Long-term perfor-mance at ORD
Test for material properties
Optimal joint types and spacing.
Figure 1. Unrestrained shrinkage of mortar bars, w/c = 0.5 (Brooks et al. 2000)
Sieve No. 8
Sieve No. 50
TN2, 3, 4, 15
Done, TN 12
TN 12 and TN 17.
In progress, TN 12 and TN 17
Start tests in July
In progress, TN 3. Requires fracture results.
In progress, TN 12. Fracture tests
In progress, need shrinkage/creep results.
Review in progress, requires fracture results.
Literature Review done, TN 3.
fly ash /cementitious ratio.
Non standard test:
Sealed 2 d, air dried 26 d, soaked 4 d, initial measurement taken, oven dried at 122 F and 17% RH
Building research station (UK), “Shrinkage of natural aggregates in concrete”, Build. Res. Stat. dig., no. 35, 1963.
a significant factor
- 1.5” max aggregate size
*units in microstrain
GF = Area under the Curve
Porous Concrete Friction/Noise Layer
h1, E1, υ1, α1, k1, ρ1, D1
h2, E2, υ2, α2, k2, ρ2, D2
fB = 0.1%
Shrinkage Resistant Layer
h3, E3, υ3, α3, k3, ρ3, D3
fA = 0.25%
Fatigue Resistant Layers
h4, E4, υ4, α4, k4, ρ4, D4
fA = 0.5%
E(z), υ(z), α(z), k(z), ρ(z), D(z)
G. P. Gonzalez, H. K. Moo-Young, “Transportation Applications Of Recycled Concrete Aggregate”, FHWA State of the Practice National Review September 2004.
While there are no reports in the literature, it is likely that RCA increases tensile creep, which would reduce propensity for shrinkage cracking or curling
I. Maruyama, R. Sato, “A trial of reducing autogenous shrinkage by recycled aggregate”, in Proceedings of self-desiccation and its importance in concrete technology, Gaithersburg, MD, June 2005.
16 instrumented slabs
(Advanced Transportation Loading ASsembly)
Test ideas at UIUC