Federal Highway Administration - Research, Development, and Technology

PCCP Banner.

CONCRETE MATERIALS AND MIX DESIGN FOR ASSURING DURABLE PAVEMENTS

Table 1. The Influence of Materials & Mix Design on Concrete

CATEGORY CHARACTERISTICS AFFECTED PCC PROPERTY
Aggregates Maximum size paste vol %, shrinkage
  Gradation same
  Soundness durability; including F/T resistance
  Angularity/shape workability; water demand; W/(C+P); shrinkage
  Surface texture paste/aggregate bond; tensile/flexural strength
  Thermal coeff thermal coefficient; cracking tendency
  Alkali reactivity susceptibility to AAR and distress
  Hardness surface friction
Cements Fineness rate of strength gain; permeability
  Chemical composition Rate of strength gain; sulfate resistance; AAR susceptibility
Additives/
Admixtures 		Air entraining F/T resistance of the paste
  Water reducing/
plasticizing 		water content; W/(C+P); workability; finishability; shrinkage
  Pozzolans rate of strength gain; permeability; AAR susceptibility
  Fibers bleeding; toughness; cracking; crack opening
W/(C+P) Level of: workability; finishability; segregation;
shrinkage; cracking; strength;
permeability

Table 2. Influence of Other Factors on PCC/Pavement Properties

CATEGORY CHARACTERISTICS PROPERTY AFFECTED
Pavement
structural
design & performance
Design strength		 Joint/crack spacing
- JPCP
- JRCP
- CRCP		 flexural, tensile strength;
crack resistance tensile stress & transverse cracking;
load transfer efficiency & need for
load transfer devices
Environment
-short term 		Temperature, relative
humidity; solar
radiation; wind 		strength gain; moisture loss;
tensile stress and
random crack
susceptibility
-long term Temperature; moisture;
F/T cycling 		slab size; slab shape
(curling & warping)
and slab support;
joint/crack
opening; durability
Construction Control of
materials and mix 		quality &
uniformity of PCC
  Site preparation uniformity of
PCC in-place; smoothness
  on-time
PCC delivery		 same
  equipment &
crew quality 		same
  finishing smoothness
  texturing surface friction
& noise
  curing moisture loss;
temperature and moisture
gradients; strength gain;
crack susceptibility
  timing of
joint sawing 		random cracking;
uniformity of
joint/crack opening

References

1. Agg, Thomas, 1940,"The Construction of Roads and Pavements", fifth edition, McGraw Hill, New York, 483 p.

2. Long-Term Pavement Performance - Program Reference Guide; Version 1.0, March 1996, Pavement Performance Division, Federal Highway Administration, 34 p.

3. Scanlon, John M., and McDonald, James E.,1994, Thermal Properties, in Significance of Tests and Properties of Concrete and Concrete Making Materials, Paul Klieger and Joseph F. Lamond, editors, ASTM Publication 169C, Philadelphia, 623 p.

4. Forster, Stephen W., 1994, High-Performance Concrete - Stretching the Paradigm, Concrete International, V. 16, No. 10, October, 1994, pp. 33-34.

left arrow. Summary

 

http://www.tfhrc.gov/pavement/pccp/concr8.htm