Capillary Water Barrier

Capillary action occurs because water is sticky thanks to the forces of cohesion water molecules like to stay close together and adhesion water molecules are attracted and stick to other substances.

Capillary water barrier. Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. Water that remains in the soil after gravitational water is drained out that is subject to the laws of capillary movement and that is in the form of a film around the soil grains. Cwb capillary water barrier. Soils geosynthetics under unsaturated conditions.

Rigid foam insulation is taped at seams and installed over a drainage pad of aggregate to serve as a capillary break under the basement slab. Definition of capillary water. This can be problematic as the capillary barrier may cause undesirable moisture build up in the overlying soil. Install a vapor barrier over this consisting of.

Capillary water barrier listed as cwb. Key to the understanding of capillary barriers is the assessment of water flow and storage in porous geomaterials e g. The surface tension acts to hold the surface intact. A capillary barrier will form and restrict water flow when two porous materials with differing porous structures e g a geotextile overlain by a fine grained soil are in contact with one another.

1 2 2 degree of compaction. It is capillary water barrier. Install a capillary break beneath slab foundations for example a slab on grade or basement slab foundation consisting of 4 inches of aggregate stone or 4 inches of sand covered by geotextile matting. Looking for abbreviations of cwb.