Erosion resistant barrier with varying permeabilities

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the blend, when dropped through a water column, having a uniform descent such that the blend does not segregate as it drops;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the blend, when dropped through a water column, having a non-uniform descent such that the composite particles descend at a faster rate than the aggregate particles creating an aggregate rich armored upper layer;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the blend, when dropped through a water column, having a non-uniform descent such that the composite particles descend at a slower rate than the aggregate particles creating an aggregate rich geotechnically stable lower layer;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the barrier cap material, when hydrated on a surface, forming a barrier layer on the surface having a water permeability of less than 1×10−7 cm/sec;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the barrier cap material, when hydrated on a surface, forming a barrier layer on the surface having a water permeability of greater than 1×10−6 cm/sec;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core and amendments to facilitate chemical and/or biological treatment of contaminants;
• the barrier cap material, when hydrated on a surface, forming a layer on the surface including areas of lower permeability and areas of higher permeability creating a funnel and gate system;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising a blend of:

• a plurality of aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• a plurality of manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the barrier cap material, when hydrated on a surface, forming an erosion resistant layer on the surface;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.

A barrier cap material comprising alternating layers of:

• aggregate particles having a particle size between about 0.1 inch and about 2 inches;
• and
• manufactured composite particles including a core and a hydratable sealant material attached to the core;
• the hydratable sealant material, when hydrated on a surface, infiltrating the aggregate particles creating a uniform barrier layer having a water permeability of less than 1×10−7 cm/sec;
• the barrier cap material including the aggregate particles in an amount from about 20% to about 80% and the manufactured particles in an amount from about 20% to about 80% by weight of the barrier cap material.