MSTE TERMS

• Compression Test is used to determine whether a concrete has the specified compressive strength.
• Reflection cracks are cracks in asphalt overlays that reflect the crack pattern in the pavement structure below it.
• Direct shear test is useful in determining the shearing strength resistance along recognizable weal planes within the soil material.
• Distillation test determines the asphalt content of liquid asphalt.
• Ductility test measures the ability of the asphalt to stretch without breaking.
• Extraction test is used to determine the amount of asphalt present in the mix.
• Penetration test measures the distance that a standard needle will penetrate a sample at a given temperature in a specified time.
• Spot test determines if asphalt is overheated during production.
• Sleve test determines the presence of larger globules of asphalt in the emulsion.
• Slump test measures the consistency of fresh concrete before it sets and to check its workability.
• Edging is the process of rounding off the formed edge of a slab to prevent chipping or damage.
• Bleeding is when free water in the concrete mix is pushed upward to the surface due to the settlement of heavier solid particles.
• Screeding is the first step in finishing the concrete, the action of flattening poured concrete into a smooth or flat layer prior to finishing the surface.
• Leveling is the process of eliminating the ridges and voids left by screeding.
• Pumping is when slab deflection under passing loads sometimes results in the discharge of water and subgrade soils along joints, cracks and pavement edges.
• Upheaval is the localized upward displacement of a pavement due to swelling of the sub-grade or some portion of the pavement structure.
• Shoving is a form of plastic movement resulting in localized bulging of the pavement.
• Rutting are channelized depressions that may develop in the wheel tracks of an asphalt pavement.
• Hinge point the paint on the subgrade directly below the edge of the pavement from which the subgrade slopes downward to the point of slope selection.
• Skid resistance the ability of an asphalt paving surface, particularly when wet, to offer resistance to slipping or skidding.
• Alligator Cracks interconnected cracks forming a series of small blocks resembling an alligator's skin or chicken-wire, and caused by excessive deflection of the surface over unstable subgrade or lower courses of the pavement.
• Catch points the point where the design side slope intersects with the ground.
• Sub-base The course in the asphalt pavement structure immediately below the base course.
• Faulting- the difference in elevation between the joints due to settlement of pavements, erosion of material under the pavement, and change in temperature.
• Longitudinal Crack- a vertical crack in the pavement that follows a course approximately parallel to the centerline.
• Stake points points at which the cut or fill slopes intersect the existing ground.
• The actual intersection position of the side slope with the existing ground surface.
• Joint or crack apalling- the breakdown or disintegration of slab edge at joints or cracks.
• Sub-grade the soil prepared to support a pavement structure or a pavement system.
• If the subgrade soil has adequate support, it may serve as the subbase.
• Raveling is the progressive separation of aggregate particles in a pavement from the surface downward or from the edges inward.
• Base the lower or underlying pavement course atop the subbase or subgrade and under the top or wearing course.
• Skid hazard any condition that might contribute to making a pavement slippery.
• Blowup-localized upward buckling and shattering of the slabs at transverse joints or cracks.
• Shrinkage Cracks interconnected cracks forming a series of large blocks, usually with sharp corners or angles.
• Surface abrasion is the process of wearing away as surface due to friction.