Materials In Constructions Flashcards
Sediments or other unconsolidated accumulation of solid particles produced by the physical and chemical disintegration of rocks.
Soil
What is AASHTO?
American Association of State Highway and Transportation Officials
What is ANSI?
American National Standards Institute
What is ASTM
American Society for Testing Materials
The moisture content at which a soil changes from the liquid state to the plastic state, measured when soil in a shallow dish flows to close a 12.5 mm groove after 25 drops from 1cm.
Liquid Limit (LL)
The water content at which a silt or clay material will just begin to crumble.
Plastic Limit (PL)
The liquid limit minus the plastic limit.
Plasticity Index
A constructed layer or facing of stone, placed to prevent erosion, scouring or sloughing of a structure or embankment.
Riprap
A wire-enclosed riprap.
Gabion
A construction materials consisting of synthetic components made for use with or within earth materials.
Geosynthethics
Are the most common geosynthetics, consist of woven or nonwoven fabric made from polymeric materials.
Geotextiles
Are continuous polymeric sheets that are impermeable.
Geomembranes
Combination of geosynthethic components, usually sheet or edge drains consisting of a prefabricated core to which a geotextile filter is bonded.
Geocomposites
Consist of a continuous extrusion of polymeric ribs.
Geonets
A three-dimensional prefabricated polymeric systems ranging from 100mm to 200 mm.
Geocells