TECHNICAL PAPERS
May 1, 1999

Measurement of Water Content in Portland Cement Concrete

Publication: Journal of Transportation Engineering
Volume 125, Issue 3

Abstract

Warping of portland cement concrete (PCC) pavements is the result of temperature and/or moisture gradients in the pavement structure. So far, the focus has been on studying and modeling temperature gradients caused by the relative ease of measuring temperature gradients in PCC as compared with the measurement of moisture gradients. This paper provides the methodology for determining the moisture content in nonreinforced PCC pavements by relating the moisture content to the dielectric constant. This relationship is a second-order polynomial equation with a 95% confidence band for a range of water contents from 4 to 11%.

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References

1.
Darter, M. I. ( 1977). “Design of zero-maintenance plain jointed concrete pavement; Vol I-Development of design procedures.” Rep. No. FHWA-RD-77-111, University of Illinois, Technical Report to the Federal Highway Administration, Department of Transportation, Office of Research and Development, Washington, D.C.
2.
Fellner-Feldegg, J. ( 1969). “The measurement of dielectrics in the time domain.” J. Physical Chemistry, 73, 616–623.
3.
Harr, M. E. ( 1958). “Warping stresses and deflections in concrete slabs,” thesis, Purdue University, Ind.
4.
Hatt, W. K. ( 1926). “The effect of moisture on concrete.” Trans. ASCE, 89, 270–307.
5.
Janoo, V., Berg, R., Simonsen, E., and Harrison, A. ( 1994). “Seasonal changes in moisture content in airport and highway pavements.” Spec. Publ. SP 19-94, U.S. Bureau of Mines, Golden, Colo.
6.
Poblete, M., Ceza P., David, J., Espinosa, R., Garcia, A., and Gonzalez, J. ( 1991). “A model of slab cracking for PCC pavements.” Transp. Res. Rec. 910810, Transportation Research Board, Washington, D.C.
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Topp, G. C. ( 1981). “The application of TDR to soil water content measurement.” Int. Conf. on the Measurement of Soil and Plant Water Status, Vol. 1, Utah State University, Logan, Utah, 85–93.
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Topp, G. C., Davis, J. L., and Annan, A. P. ( 1980). “Electromagnetic determination of soil water content: Measurement in coaxial transmission lines.” Water Resour. Res., 16(3), 574–582.

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Published In

Go to Journal of Transportation Engineering
Journal of Transportation Engineering
Volume 125Issue 3May 1999
Pages: 245 - 249

History

Received: Oct 29, 1997
Published online: May 1, 1999
Published in print: May 1999

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Affiliations

Res. Civ. Engr., U.S. Army Cold Regions Res. and Engrg. Lab., 72 Lyme Rd., Hanover, NH 03755-1290.
Res. Civ. Engr., U.S. Army Cold Regions Res. and Engrg. Lab., 72 Lyme Rd., Hanover, NH.
Res. Civ. Engr., Fed. Aviation Admin., FAA Tech. Ctr., Atlantic City, NJ 08405.

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