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
A layer of sand with uniform size particles, area must be large enough to prevent the termite from moving through it or prevents its use in “tunnel” construction.
Termite resistant Sand
Steel mesh product that is fine enough to keep even tiny termites from passing through it.
Termite Mesh
Physically separate the home from the distance termites can travel from their colony
Home Construction
The use of termite resistant building products, from drywall to floor joists treated with borates before use in home construction.
Pre-Construction Chemical Barriers
Applied by rodding or trenching around the base of foundations, plumbing, utility entrances, expansion joints, and where two slabs will join, applying 4 gallons of termiticide per 10 linear feet.
Vertical Barriers
Applying one gallon of termiticide per 10 square feet, usually by coarse spray at low pressure
Horizontal Barriers
This involves drilling through the slab floor and injecting termicides into the soil at regular intervals.
Slab Treatment
Trenches are dug around the foundation, termiticide applied and the trench filled back in.
Basement and Crawl Spaces.
