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Marginal aggregates for highway pavements

Keyser, J. H. / Eades, J. L. / Ruth, B. E. / Zimpfer, W. H. / Smith, L. L.

Abstract Marginal aggregates have been used to a very limited extent in the construction of embankments and highway pavement structures. However, the State of Florida has successfully utilized relatively poor limestones for base course construction. It has been observed that limerock bases increase in strength with ageing. A study of this phenomena revealed that Sparry Calcite cementation and drying during ageing produced strength gains as high as 100 per cent. Investigations into moisture effects and behavior of a dense graded shale aggregate indicated strength losses due to moisture content fluctuation similar to that of good limestone aggregate. A structural equivalency of 1,4∶1,0 was obtained for shale and limestone base courses.

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Marginal aggregates for highway pavements

Keyser, J. H. / Eades, J. L. / Ruth, B. E. / Zimpfer, W. H. / Smith, L. L.

Abstract Marginal aggregates have been used to a very limited extent in the construction of embankments and highway pavement structures. However, the State of Florida has successfully utilized relatively poor limestones for base course construction. It has been observed that limerock bases increase in strength with ageing. A study of this phenomena revealed that Sparry Calcite cementation and drying during ageing produced strength gains as high as 100 per cent. Investigations into moisture effects and behavior of a dense graded shale aggregate indicated strength losses due to moisture content fluctuation similar to that of good limestone aggregate. A structural equivalency of 1,4∶1,0 was obtained for shale and limestone base courses.

Marginal aggregates for highway pavements

Keyser, J. H. / Eades, J. L. / Ruth, B. E. / Zimpfer, W. H. / Smith, L. L.

Abstract Marginal aggregates have been used to a very limited extent in the construction of embankments and highway pavement structures. However, the State of Florida has successfully utilized relatively poor limestones for base course construction. It has been observed that limerock bases increase in strength with ageing. A study of this phenomena revealed that Sparry Calcite cementation and drying during ageing produced strength gains as high as 100 per cent. Investigations into moisture effects and behavior of a dense graded shale aggregate indicated strength losses due to moisture content fluctuation similar to that of good limestone aggregate. A structural equivalency of 1,4∶1,0 was obtained for shale and limestone base courses.

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Title:

Marginal aggregates for highway pavements

Contributors:

Keyser, J. H. (author) / Eades, J. L. (author) / Ruth, B. E. (author) / Zimpfer, W. H. (author) / Smith, L. L. (author)

Published in:

Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur ; 30

Publication date:

1984

ISSN:

DOI:

https://doi.org/10.1007/BF02594355

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

California Bearing Ratio , Strength Gain , Shale , Asphalt , Limestone Base

Classification:

BKL: 38.58 Geomechanik / 56.20 Ingenieurgeologie, Bodenmechanik
Local classification TIB: 050/6545

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