A cementitious composite for in-situ hydration includes a first layer, a second layer spaced from the first layer, and a cementitious mixture disposed between the first layer and the second layer. The cementitious mixture includes cementitious materials. The cementitious mixture is configured to absorb a mass of water that provides a maximum 28 day compressive strength of the cementitious composite upon curing which is represented by M.sub.w=x.Math.M.sub.c. M.sub.w is the mass of the water per unit area of the cementitious composite. M.sub.c is a mass of the cementitious materials of the cementitious mixture per unit area of the cementitious composite. x is a ratio of the mass of the water relative to the mass of the cementitious materials of the cementitious mixture per unit area of the cementitious composite that provides the maximum 28 day compressive strength of the cementitious composite. x is between 0.25 and 0.55.

A concrete component includes a fiber reinforcement structure (12), formed by a grid arrangement (15). At least some of the rods extending in the X or Y direction are preferably designed as double rods having a joined cross-section or having sub-cross-sections separated from each other by a gap (20). Such double rods can be arranged in a grid structure both at right angles to each other and at other angles to provide a triangular structure, a hexagonal structure, or the like as a grid. Fiber reinforcement structures (12) made of a plastic-impregnated fiber material, such as epoxy-resin-bonded glass fibers having long fibers (endless fibers), in the particular rod longitudinal direction and without bonding among each other (ravings) can construct an adequately load-bearing composite with the concrete body (II). The steel rods can act as reinforcement, wherein harmful effects on the concrete, in particular wedge and gap effects, do not occur.

A cementitious composite material for in-situ hydration includes a first layer having a nonwoven configuration and a cementitious material disposed within the first layer. The first layer has a first side and an opposing second side, and the first layer includes a plurality of discrete nodes spaced relative to one another along a first direction and a second direction. The cementitious composite material further includes a second layer disposed along the first side of the first layer and a third layer disposed along the opposing second side of the first layer and configured to prevent at least a portion of the plurality of cementitious particles from migrating out of the first layer. The cementitious material includes a plurality of cementitious particles, the first layer and the second layer include flexible materials, and the second layer is coupled to the first layer at the plurality of discrete nodes.