Abstract: Flexible concrete structures resemble elongated rope-like articles having an outer textile casing in the form of a mono-tubular body with a continuous inner bore filled with dry cementitious material. The concrete ropes are naturally permeable to water for controlled chemical hydration for maximizing structural values and load bearing properties. The flexible concrete ropes may be employed in a wide range of applications in masonry and cement construction, such as caulk filler between foundations and roadways; as convenient mortar ropes in the reinforcement and stabilization of stone, rock, brick and block structures, like culvert bridges, drainage ditches, railroad roadbeds; temporary templates for A-frame structures, and as chocks for dry foundations.

Abstract: Generally mat shaped concrete construction units provide novel, versatile building materials particularly for flexible multi-ply concrete composites in pavement or floor construction, roadbeds, driveways, waste disposal sites, etc. The mat-like structures comprise an outer shell subdivided into parallel tubular compartments which are filled with dry concrete mix so as to provide controlled chemical hydration for greater strength and durability. The multi-ply structures fabricated with the concrete construction units exhibit enhanced resistance to fracturing and possess residual structural values not found in equivalent poured concrete structures.