Means and method for producing stepped concrete slope structures

Claim 1

A flexible, porous, body-shaping form for producing a segmental protective cover of self-hardenable fluid material on a sloping or other surface of a situs, as for protection thereof against scour, comprising: a relatively large, substantially flat base member of flexible sheet material adapted to cover a broad lateral area of the surface to be protected, and a series of spaced, parallel, laterally elongated, hollow, generally porouswalled bag members of flexible sheet material fixed along a bottom portion thereof to said base member along spaced, laterally co-extending lines of attachment, each said bag member being of loop-shaped transVerse cross-section; means defining substantially transversely extending fluid flow passage means on the base member, aperture means in said bottom portion of each bag member in communication with said passage means, so that self-hardenable, fluid material can be supplied through said passage means and aperture means to said bag members individually and progressively to distend the walls of said bag members outwardly and fill the bag members to form the protective cover, the spacing of said co-extending lines of attachment in relation to the transverse cross-sectional sizes of said bag members being such that, upon filling the bag members, the generally porous walls of adjacent bag members are distended into contact with each other, and a portion of the self-hardening fluid material passes through the porous walls of said bag members to cause a bond between adjacent, contacting areas of said bag members.

Claim 5

A method of producing a mat-like cover on a slope or like surface of a situs as for protecting the same against scour; comprising the steps of mounting a flexible web of broad lateral area on the surface, providing the web with a plurality of laterally elongated, hollow, generally porous-walled bag members connected to the web, providing passage means in said web in communication with the hollow interior of said bag members, positioning the bag members in generally stepped, overlying relationship, pumping pressurized, fluid, self-hardenable cementitious material through said passage means and into said bag members in succession, thus progressively filling and distending the bag members into contacting engagement with adjacent bag members, and causing the cementitious material to ooze through the porous bag members to bond adjacent, contacting bag members together.

Claim 6

A method of producing a mat-like cover on a slope or like surface of a situs as for protecting the same against scour; comprising the steps of mounting a flexible web of broad lateral area on the surface, providing the web with a plurality of laterally elongated, hollow, generally porous-walled bag members connected to the web, providing passage means in said web in communication with the hollow interior of said bag members, positioning the bag members in generally stepped, overlying relationship, pumping pressurized, fluid, self-hardenable cementitious material through said passage means and into said bag members in succession, thus progressively filling and distending the bag members into contacting engagement with adjacent bag members, and causing the cementitious material to ooze through the porous bag members to bond adjacent, contacting bag members together.