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Mathematical Model of Skid Resistance as a Function of Speed

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Skid resistance has been modeled as an exponential function of speed involving two parameters, zero-speed intercept and percent normalized gradient are presented, and an alternative parameter called a "speed constant", which is free of those inconsistencies, is proposed. Two methods for identifying the model parameters are evaluated using test data collected on road sections in Pennsylvania. Both methods produce relatively accurate predictions of skid number at different speeds even though the estimates of the model parameters caculated in each method are different. The differences between the parameter estimates obtained from the two methods clearly demonstrate that great care must be exercised in relating the parameter estimates to pavement micro- and macrotexture characteristics. The normalized texture index, a new measure of combined micro- and macrotexture, is introduced. Finally, the effect of speed on the model parameters is investigated first analytically and then using experimental data.

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Ketersediaan

Informasi Detail

Judul Seri

Trr No. 1311 Pavement Design, Management And Construction

No. Panggil

-

Penerbit

: s.n.., 1991

Deskripsi Fisik

p. 26-32 illus.

Bahasa

English

ISBN/ISSN

-

Klasifikasi

006:656.021

Tipe Isi

-

Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

-

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

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