CEMENTITIOUS COMPOSITE MAT

1 . A cementitious composite for in-situ hydration, the cementitious composite comprising:

a first layer;

a second layer;

a cementitious mixture positioned between the first layer and the second layer, the cementitious mixture including cementitious material; and

a structure layer positioned between the first layer and the second layer;

wherein the cementitious mixture comprises a majority of a volume between the first layer and the second layer.

2 . The cementitious composite of claim 1 , wherein the first layer is at least one of water permeable, water soluble, removable, or biodegradable, and wherein the second layer is water impermeable.

3 . The cementitious composite of claim 1 , wherein the first layer and the second layer are water permeable.

4 . The cementitious composite of claim 1 , wherein at least one of:

(a) the first layer is treated to provide a desired disintegration time of the first layer during in-situ hydration; or

(b) the first layer includes a water soluble coating that includes a curing agent configured to be absorbed by the cementitious mixture during in-situ hydration.

5 . The cementitious composite of claim 1 , wherein the structure layer has a plurality of ends that are discrete and spaced apart from one another.

6 . The cementitious composite of claim 5 , wherein the structure layer includes a plurality of individual connectors defining the plurality of ends, and wherein the plurality of ends are coupled to at least one of the first layer or the second layer.

7 . The cementitious composite of claim 6 , wherein the plurality of ends of the plurality of individual connectors include first ends and second ends, wherein the first ends are coupled to an interior surface of the first layer, and wherein the second ends extend through the second layer and engage with an exterior surface of the second layer.

8 . The cementitious composite of claim 6 , wherein the plurality of ends of the plurality of individual connectors include first ends and second ends, wherein the first ends are coupled to a first interior surface of the first layer, and wherein the second ends are coupled to a second interior surface of the second layer.

9 . The cementitious composite of claim 6 , wherein the plurality of ends of the plurality of individual connectors include first ends and second ends, wherein the first ends extend through the first layer and engage with a first exterior surface of the first layer, and wherein the second ends extend through the second layer and engage with a second exterior surface of the second layer.

10 . The cementitious composite of claim 6 , wherein the plurality of individual connectors have a two-piece structure including (a) a first plurality of connectors coupled to the first layer and (b) a second plurality of connectors coupled to the second layer, and wherein each of the first plurality of connectors is positioned to engage with a respective one of the second plurality of connectors to form the plurality of individual connectors.

11 . The cementitious composite of claim 1 , wherein the structure layer is a geogrid having (a) a first plurality of nodes positioned along a first interior surface of the first layer, (b) a second plurality of nodes positioned along a second interior surface of the second layer, and (c) a plurality of discrete struts, each of the plurality of discrete struts extending between one of the first plurality of nodes and one of the second plurality of nodes.

12 . The cementitious composite of claim 1 , wherein the structure layer includes a grid having interconnecting walls that define a plurality of cavities configured to receive the cementitious mixture.

13 . The cementitious composite of claim 1 , wherein the structure layer has a woven or knitted structure.

14 . The cementitious composite of claim 1 , wherein the cementitious mixture includes interconnection particles that are configured to form the structure layer within the cementitious material in response to activation.

15 . The cementitious composite of claim 1 , wherein the cementitious mixture includes absorbent material, wherein the absorbent material at least one of:

(a) is configured to absorb water and at least one of expand or gel during in-situ hydration to lock the cementitious material in place to prevent washout thereof;

(b) absorbs between 75 and 300 times its weight in water;

(c) includes at least one of a superabsorbent polymer or a superabsorbent clay; or

(d) includes particles that have a particle size at a mix ratio, wherein the mix ratio includes 0-30% of the particles having a size less than 90 microns, 10-60% of the particles having a size between 90-150 microns, 25-80% of the particles having a size between 150-300 microns, and 0-30% of the particles having a size greater than 300 microns.

16 . A cementitious composite comprising:

a first layer;

a second layer;

a structure layer positioned between the first layer and the second layer; and

a cementitious material positioned between the first layer and the second layer;

wherein the structure layer has a plurality of ends that are discrete and spaced apart from one another.

17 . A cementitious composite comprising:

a cementitious mixture including:

dry cementitious material; and

interconnection particles configured to form an interconnecting structure within the dry cementitious material in response to activation.

18 . The cementitious composite of claim 17 , wherein the interconnection particles are heat activated.

19 . The cementitious composite of claim 17 , further comprising a layer disposed along the cementitious mixture, wherein the interconnecting structure attaches to the layer.

20 . The cementitious composite of claim 17 , further comprising a first layer and a second layer, wherein the cementitious mixture is disposed between the first layer and the second layer, and wherein at least one of:

(a) the first layer is water impermeable and the second layer is water permeable;

(b) the interconnecting structure attaches to at least one of the first layer or the second layer; or

(c) one of the first layer or the second layer is removable, biodegradable, or water soluble.