Asphalt Course

Lesson 1 • Asphalt Material Composition

Examines bitumen chemistry, aggregate types, and filler materials. Connects material properties to performance outcomes in pavement design.

Lesson 2 • Industry Standards and Specifications

Introduces performance-based specifications, grading systems, and quality benchmarks. Prepares students to read and apply technical documents on projects.

Lesson 3 • Types of Asphalt Mixtures

Differentiates hot-mix, warm-mix, cold-mix, and recycled asphalt products. Guides selection of mixture type based on project conditions.

Lesson 1 • Aggregate Gradation and Selection

Teaches sieve analysis, gradation curves, and aggregate blending techniques. Proper gradation directly controls mix strength and workability.

Lesson 2 • Mix Design Testing and Verification

Applies laboratory tests to verify mix design compliance before field production. Links lab results to expected field performance outcomes.

Lesson 3 • Binder Content Optimization

Determines optimum asphalt binder content using Marshall and Superpave methods. Correct binder content prevents rutting, cracking, and bleeding.

Lesson 4 • Modified and Specialty Mixes

Explores polymer-modified binders, stone matrix asphalt, and porous asphalt designs. Addresses performance demands beyond standard mixture capabilities.

Lesson 1 • Environmental and Safety Compliance

Reviews emission controls, hazardous material handling, and worker protection at plant sites. Compliance protects workers and meets environmental permit requirements.

Lesson 2 • Batch and Drum Plant Systems

Compares batch plant sequencing with continuous drum-mix production. Understanding plant type determines process control strategies used on site.

Lesson 3 • Aggregate Handling and Drying

Covers cold feed systems, dryer operation, and moisture removal processes. Proper drying ensures binder adhesion and prevents steam-related mix defects.

Lesson 4 • Binder Storage and Metering

Addresses tank temperature management, binder pump calibration, and injection systems. Accurate binder metering is critical to meeting mix design targets.

Lesson 1 • Base Course Construction

Details aggregate base placement, compaction standards, and proof-rolling procedures. A properly constructed base ensures uniform support for asphalt layers.

Lesson 2 • Pavement Layer Functions

Explains roles of subgrade, base, subbase, and surface layers in load distribution. Layer interaction determines overall pavement life and performance.

Lesson 3 • Drainage Design for Pavements

Examines surface drainage slopes, edge drains, and permeable base systems. Effective drainage is the single greatest factor in extending pavement service life.

Lesson 4 • Subgrade Stabilization Techniques

Addresses lime, cement, and geosynthetic stabilisation methods for weak subgrades. Stabilisation extends pavement life and reduces required asphalt thickness.

Lesson 1 • Compaction Equipment and Sequencing

Details breakdown, intermediate, and finish rolling patterns and equipment selection. Achieving target density within the compaction window is critical to durability.

Lesson 2 • Paving in Adverse Conditions

Manages paving in cold weather, rain risk, and high-temperature environments. Condition-specific adjustments protect mix quality and compaction outcomes.

Lesson 3 • Tack Coat and Prime Coat Application

Covers emulsion selection, application rates, and curing requirements for interlayer bonding. Proper bonding prevents slippage and delamination under traffic.

Lesson 4 • Mat Placement Techniques

Teaches head-of-load management, paving speed control, and screed adjustment for mat quality. Consistent paving speed is the primary driver of mat uniformity.

Lesson 5 • Paving Equipment and Setup

Identifies paver components, screed types, and pre-paving setup procedures. Correct equipment configuration is the foundation of a uniform mat.

Lesson 1 • Troubleshooting Density Deficiencies

Diagnoses causes of low density including mix temperature loss, roller pattern errors, and segregation. Corrective actions prevent acceptance failures and costly rework.

Lesson 2 • Intelligent Compaction Technology

Introduces GPS-mapped roller passes, stiffness measurement, and real-time feedback systems. Intelligent compaction reduces variability and documents quality assurance.

Lesson 3 • Density Testing Methods

Covers nuclear gauge, non-nuclear gauge, and core sampling for density verification. Each method has accuracy, safety, and regulatory implications for field use.

Lesson 4 • Compaction Theory and Mechanics

Explains how static weight, vibration, and oscillation compact asphalt at the particle level. Theory guides roller selection and pass count decisions.

Lesson 1 • Structural Evaluation Techniques

Uses falling weight deflectometer data and ground-penetrating radar to assess structural capacity. Structural data distinguishes functional from structural rehabilitation needs.

Lesson 2 • Pavement Condition Index Calculation

Applies the standardised PCI methodology to convert distress data into a numerical rating. PCI scores guide maintenance prioritisation and budget allocation.

Lesson 3 • Visual Condition Survey Methods

Teaches windshield, walking, and automated survey techniques for distress data collection. Survey method selection balances accuracy, cost, and network coverage needs.

Lesson 4 • Ride Quality and Smoothness Measurement

Measures International Roughness Index and profile data using profilometers and inertial profilers. Smoothness data links construction quality to user experience and vehicle costs.

Lesson 1 • Full-Depth Reclamation

Explains in-place pulverisation, stabilisation, and recompaction of existing pavement layers. FDR recycles existing materials, reducing cost and environmental impact significantly.

Lesson 2 • Rehabilitation Strategy Selection

Applies life-cycle cost analysis and condition data to select optimal treatment strategies. Systematic selection maximises network performance within available budget constraints.

Lesson 3 • Preventive Maintenance Strategies

Covers crack sealing, chip seals, slurry seals, and fog seals applied before significant distress. Timely preventive treatment preserves structural integrity at low cost.

Lesson 4 • Corrective Maintenance Techniques

Addresses pothole patching, skin patching, and utility cut repair for localised failures. Corrective maintenance restores safety and prevents distress from spreading.