Abstract: A method of fabricating a concrete slab system places bed of a first concrete on a base. The bed has a top surface, a bottom surface, and edge surfaces. The bed is exposed to a drying environment such that the top surface develops shrinkage cracks and portions of the bed separate from the base. A force applied to the top surface induces non-shrinkage cracks in the bed that extend to the bed's bottom surface. Non-concrete material is placed on the bed's top surface and on each of its edge surfaces. The non-concrete material and bed are covered with a second concrete having stretchable fibers mixed therein.

Abstract: A concrete slab system includes a bed of a first concrete having a top surface and edge surfaces. The bed's top surface has shrinkage cracks and induced cracks. The widths of the induced cracks are greater than widths of the shrinkage cracks. Non-concrete material is disposed on the bed's top surface and on each of the bed's edge surfaces. A second concrete covers the non-concrete material and the bed. The second concrete has stretchable fibers mixed therein.

Abstract: A concrete slab system includes a bed of a first concrete having a top surface and edge surfaces. The bed's top surface has shrinkage cracks and induced cracks. The widths of the induced cracks are greater than widths of the shrinkage cracks. Non-concrete material is disposed on the bed's top surface and on each of the bed's edge surfaces. A second concrete covers the non-concrete material and the bed. The second concrete has stretchable fibers mixed therein.

Abstract: A method of fabricating a concrete slab system places bed of a first concrete on a base. The bed has a top surface, a bottom surface, and edge surfaces. The bed is exposed to a drying environment such that the top surface develops shrinkage cracks and portions of the bed separate from the base. A force applied to the top surface induces non-shrinkage cracks in the bed that extend to the bed's bottom surface. Non-concrete material is placed on the bed's top surface and on each of its edge surfaces. The non-concrete material and bed are covered with a second concrete having stretchable fibers mixed therein.

Abstract: A joint filling strip has a uniform cross-section along its length that defines a top portion and a shaft portion coupled to the top portion. The top portion includes a rectangular section. The shaft portion includes at least one pair of opposing fins spanning a distance that is greater than a width of the rectangular section.

Abstract: A concrete floor system includes an integrated concrete slab and a joint strip. The slab has a top region defined by concrete with stretchable fibers mixed therein. The top region covers and is partially blended into concrete beneath the top region. A sawcut, extending into the slab, is defined by opposing walls and a bottom. The joint strip is disposed in the sawcut and includes a top portion and a shaft portion. The top portion fills an upper part of the sawcut. The shaft portion spans a lower part of the sawcut. The shaft portion has at least one pair of opposing fins angled towards the joint strip's top portion. Each fin terminates at and is in contact with one of the opposing side walls of the sawcut.

Abstract: A joint filling strip has a uniform cross-section along its length that defines a top portion and a shaft portion coupled to the top portion. The top portion includes a rectangular section. The shaft portion includes at least one pair of opposing fins spanning a distance that is greater than a width of the rectangular section.

Abstract: A method of fabricating an integrated concrete slab includes places a first concrete mixture on a base to form a slab having a surface region in a plastic state. Next, a second concrete mixture in a plastic state thereof is placed on the surface region while the surface region is in its plastic state. The second concrete mixture includes concrete with approximately 3-9 pounds of stretchable fibers mixed in each cubic yard thereof.

Abstract: An integrated concrete slab includes concrete with stretchable fibers mixed therein covering and partially integrated with a portion of concrete that contains either no fibers or relatively few fibers mixed therein.