Embankment on muskeg and associated methods

Claim 3

The method as recited in claim 1 wherein the embankment materials are distributed according to a ''''flanking berm'''' mode so as to counterbalance the said center high loading materials by the weight of embankment materials distributed outward therefrom in a counterbalancing manner.

Claim 4

An embankment road constructed of a prescribed particulate material on terrain comprising a surface layer of light compressible soil material of relatively high water content, this road comprising: a substrate mat structure placed upon this terrain so as to define the contemplated road and support said particulate road material; and an array of said road particulate materials distributed upon said mat structure so as to develop sufficient static loading on said compressible soil material at the center of the roadway to thereby render it relatively rigid and incompressible under contemplated surface loading and thus form an improved highly stable roadway structure; said mat being formed to comprise a continuous structural-integral layer of water-impervious materials while supporting the described loads without rupture thereof.

Claim 5

An embankment road constructed of a prescribed particulate material on terrain comprising a surface layer of light compressible soil material of relatively high water content, this road comprising: a substrate mat structure placed upon this terrain so as to define the contemplated road and support said particulate road material; and an array of said road particulate materials distributed upon said mat structure so as to develop sufficient static loading on said compressible soil material at the center of the roadway to thereby render it relatively rigid and incompressible under contemplated surface loading and thus form an improved highly stable roadway structure; said mat being formed to comprise a continuous structural-integral layer of water-impervious materials while supporting the described loads without rupture thereof.

Claim 6

The road structure recited in claim 3 wherein said mat is comprised of relatively rigid polymeric materials.

Claim 7

The composition as recited in claim 4 wherein said mat includes rigid stiffener means affixed thereon directly under the maximum-loaded traffic sections of the road so as to minimize any ''''rolling wave'''' phenomenon.

Claim 8

The combination as recited in claim 4 wherein said mat comprises a layer of polyurethane foam material of sufficiently high compressive strength to support the contemplated loading without rupture and a supplemental reinforcement layer.

Claim 9

The combination as recited in claim 6 wherein said polyurethane foam is applied in a multi-laminate form and wherein a precoat of water-impervious material is applied prior to application of the foam and said reinforcement layer is nylon mesh material.

Claim 10

The combination as recited in claim 7 wherein said precoat is comprised primarily of bituminous materials extended by a polymeric extender adapted for low temperature flexibility of the mat in service.

Claim 13

The combination as recited in claim 9 wherein the particulates are distributed in a ''''flanking berm'''' mode so as to develop said depressed central mat section and maximum central static loading while also counterbalancing and stabilizing this and gradually diminishing the static loading upward therefrom thereby minimizing any sharp discontinuities of stress upon the underlying mat and minimizing resultant shear and a tendency to rupture.

Claim 14

The combination as recited in claim 9 wherein rigid reinforcing stiffener means is affixed to the mat structure along portions thereof underlying the contemplated traffic load, said means being sufficiently rigid to minimize and ''''rolling wave'''' phenomenon.

Claim 15

The combination as recited in claim 9 wherein said mat is so formed and comprised of materials as to render a monolithic structure distributing loads over a larger area of supporting terrain and so as to function as a barrier, both to the intrusion of moisture and to the escape of particulate roadway materials therefrom.