JOSHUA AMPONSAH DORPEH ANYIDOHO

Developed binder and wearing course compositions to enhance gradation and durability.

• Selected and proportioned aggregates and asphalt binder following MS2 specifications.
• Conducted trial blends to optimize performance parameters for asphalt mixes.
• Executed asphalt coring to obtain pavement samples for analysis.
• Evaluated core densities using bulk-specific gravity methods to assess compaction efficiency.

Performed Marshall stability and flow tests after core conditioning in hot bath.

• Maintained compliance with ASTM and AASHTO standards through rigorous testing protocols.
• Generated detailed quality control reports based on recorded test results.

(Concrete Technology) – Detailed Work Responsibilities.

1. Concrete Mix Design and Processing.

• Develop and refine concrete mix designs based on project specifications.
• Ensure proper cement, aggregate, and water proportions for optimal strength and durability.
• Conduct trial mixes to achieve the required workability, compressive strength, and durability.
• Evaluate the effect of admixtures and additives on concrete performance.

2. Field Testing and Sample Collection

• Collect fresh concrete samples from construction sites for laboratory analysis.
• Perform slump tests to assess concrete workability.
• Conduct compaction factor and flow table tests for consistency evaluation.
• Inspect surface irregularities in hardened concrete structures.
• Conduct compressive strength tests on concrete cubes and cylinders.

3. Laboratory Analysis and Quality Assurance.

Key Responsibilities for SOIL

✔️ Proctor Test (Standard & Modified) – Determines the optimum moisture content and maximum dry density of soil for proper compaction.
✔️ Soil Grading & Classification – Conducts sieve analysis to assess particle size distribution (PSD) and categorize soil types.
✔ Nuclear Density Gauge Testing – Uses a nuclear density gauge to measure in-place soil density and moisture content, ensuring proper compaction.
Atterberg Limits Testing – Determines the liquid limit (LL), plastic limit (PL), and plasticity index (PI) to evaluate soil consistency and behavior.
Moisture Content Analysis – Measures water content in soil samples to optimize construction material performance.
✔ Soil cement stabilized base ✔ Equipment Calibration & Maintenance – Maintains sieve shakers, nuclear gauges, compaction molds, and penetration testing tools for accurate results.
Data Recording & Reporting – Documents findings, generates reports, and communicates results to engineers, and project managers.

• Conducted general laboratory testing and inspection of soils, aggregates, asphalt, and foundations.
• Supervised fieldwork and ensured compliance with land administration certifications.
• Executed site drawing checks to verify project specifications and accuracy.
• Performed detailed observations to maintain high-quality standards in materials testing.

• Examined construction material samples prior to use in concrete production and fill works.
• Conducted quality control inspections at site and Precast Yard to verify alignment and structural conformity.
• Supervised concrete mix proportions for beams, slabs, and kerbs at the Precast Yard.
• Interpreted test results against specifications and control limits for data release recommendations.
• Collaborated with consultants and contractors to ensure adherence to quality specifications for structural integrity.
• Oversaw construction of Paa Grant Interchange and related roadworks in Sekondi and Takoradi.

• Conducted tests and inspections on soil, aggregates, and concrete materials for construction projects.
• Performed sampling and testing for approval of construction materials, ensuring compliance with standards.
• Executed regular inspections of construction materials received on-site to maintain quality control.
• Prospected borrow materials for embankments and subgrades, conducting lab tests as per regulations.
• Completed all testing accurately according to specifications, submitting daily field data records and reports.
• Produced concrete at site and plant while implementing stringent quality control measures.
• Managed construction of 97 km railway line, including Volta Bridge and various culverts.
• Collaborated on viable ideas to facilitate smooth project execution.