Asphalt paving compositions from positive spot asphalt fractions

Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue

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Details

106279, 106280, 106281R, C08L 9500, C10C 308

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active

039390047

ABSTRACT:
Asphalt fractions unsuitable for use in paving formulations because of their inhomogeneity (as reflected by their inability to pass the Oliensis Spot Test) can be used to make homogeneous asphaltic compositions (which pass the Oliensis Spot Test) by combining them with a propane precipitated asphalt and/or petrolene fraction. The latter fractions must have a polar aromatic content of at least 20%. Optionally up to 10% vacuum gas oil can also be added to the compositions. These upgraded asphaltic compositions have a polar aromatic content of at least 30% and are useful in paving formulations.

REFERENCES:
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patent: 2658026 (1953-11-01), MacLaren et al.
patent: 3087887 (1963-04-01), Corbett et al.
patent: 3392104 (1968-07-01), Potts et al.
patent: 3563778 (1971-02-01), Corbett et al.
patent: 3793189 (1974-02-01), Corbett
patent: 3832200 (1974-08-01), Kennel et al.
Abraham, Asphalts and Allied Substances, Sixth Ed., Vol. 2, N.Y., D. Van Nostrand Co., Inc., TN 853 A35 1960, C2, pp. 198-203.
Barth, Asphalt, N.Y., Gordon and Breach Science Publishers, 1962, TN 853 B3 C3, pp. 430-450.
Corbett, "Analytical Chemistry," Vol. 41, pp. 576-579, Apr., 1969.

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