SCDOT-ASPHALT ROADWAY TECHNICIAN COURSE EXAM

SCDOT-ASPHALT ROADWAY TECHNICIAN COURSE EXAM

(ACTUAL / ) QUESTIONS VERIFIED CORRECT

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Pavement Management - --Answers---A decision-making system which integrates planning, data collection, design, construction, and maintenance.

Cost-effective Maintenance Tool - --Answers---A tool to assist in the selection of the most cost-effective maintenance, rehabilitation, or reconstruction alternative for specific roadway.

System Components for Pavement Management - --Answers- --Prepared system map, sections or segments defined, and section components such as soil, pavement, etc.

Causes of Pavement Distress - --Answers---Include wheel loads, environment, poor drainage, and material deficiencies.

Asphalt Pavement Distress - --Answers---Cracking, distortions, disintegration, skid hazards, and surface treatment distress.

Linear Cracking - --Answers---Low temperature cracks related to wheel path load.

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Reflective Cracking - --Answers---Generally occurs during over PCC concrete pavements due to movement in underlying layers.

Edge Cracking - --Answers---Settlement of underlying material aggravated by heavy traffic or vegetation.

Block Cracking - --Answers---Low asphalt content mix.

Alligator Cracking - --Answers---Excessive surface deflection, weak base or subgrade, thin surface of base, poor damage, or overloading.

Slippage Cracking - --Answers---Lack of good bond between layers, insufficient or absence of tack coat, high sand content mixture, or insufficient compaction.

Pavement Distress Solutions - --Answers---Route and seal, surface treatments, patch, thin overlay, remove and replace.

Distortions in Asphalt Pavement - --Answers---Rutting, corrugations, depressions.

Rutting due to Subgrade or Base Issue - --Answers--- Insufficient compaction, weakened by moisture, insufficient thickness.

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Rutting due to Asphalt Surface Issue - --Answers---Low voids, excess sand, excess asphalt.

Surface Deformation - --Answers---Caused by corrugation (washing boarding), stopping or turning traffic, down grade braking, and poor mix design.

Solutions to Surface Deformation - --Answers---Surface profiling, mill defective layer, rut filling.

Disintegration of Asphalt Surface - --Answers---Weathering of the entire surface.

Raveling - --Answers---Insufficient compaction, construction in cold or wet weather, dirty aggregates, insufficient asphalt, overheating mix.

Potholes - --Answers---Localized pavement disintegration due to insufficient asphalt content.

Pothole Solution - --Answers---Cold mix patch, full depth hot mix patch.

Solution to Asphalt Surface Defects - --Answers---Seal weathered surface, mill-off flushed mat, sand blotter.

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Pavement Distress Type - --Answers---A classification of the types of distress observed in pavement.

Pavement Distress Amount - --Answers---The quantity or extent of distress present in the pavement.

Pavement Distress Severity - --Answers---The level of seriousness of the distress in the pavement.

Pavement Smoothness - --Answers---The evenness of the pavement surface.

Structural Adequacy - --Answers---The ability of the pavement structure to support traffic loads.

Surface Prep - Prime Coat - --Answers---Reduces possibility of slip plane, holds surface together under traffic, protects base from weather.

Prime Coat Application Rate for HMA - --Answers---0.05 to 0.15 gal/SY.

Prime Coat Not Required - --Answers---When asphalt is placed directly on subgrade.

Primary Purposes of Asphalt Overlay - --Answers---Correct surface irregularities, add structural capacity.

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