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Publication Details

Relationship of Consolidation to Performance of Concrete Pavements Research/Reference: useful for researchers doing further work in the pavement area as well as those developing improved testing and design procedures. Includes documents of historical value.

Primary Topic: Rigid Pavement

Description: A study was made of the influence of consolidation on properties of portland cement concrete. Consolidation was found to have a strong influence on compressive strength, bond of concrete to reinforcing steel, and permeability of concrete. There is a lesser effect of consolidation on resistance to freezing and thawing. There is a loss of about 30 percent in compressive strength for every 5-percent decrease in consolidation.

A variety of nuclear density gauges were evaluated for use in monitoring consolidation of concrete. Use o f these gauges has remained fairly constant, at relatively low levels, since 1977. A combination of techniques, such as consolidation monitoring device (CMD) and commercial direct transmission gauges, shows promise as a means of monitoring consolidation during the paving process.

A model acceptance sampling plan for concrete consolidation is proposed. The plan is of the inspection by variables type and requires a sample size of eight per lot. The plan provides for buyer's and seller’s risks of 5 percent. The plan was field tested in Idaho and Iowa. Field testing indicated that monitoring concrete pavement consolidation is practical and economically feasible.

FHWA Publication Number: FHWA-RD-87-095

Publication Year: 1988

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Updated: 04/11/2022
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