Materials Testing

• • Asphalt: Asphaltic cement extraction, gradation, density, specific gravity and stability

  • Theoretical maximum specific gravity

  • Density of drilled cores

  • Asphalt mix designs using the Marshall and Asphalt Institute methods

  • Roller pattern verification

  • In-place density tests of HMAC

Soils:

• • Soluble Sulfate and Chloride Determinations

  • In-place field density of natural soils and fill materials

  • Field evaluation of lime and cement-treated soils

  • Moisture-Density relationships for treated and untreated soils

  • Design and evaluation of soil-cement and soil-lime mixtures for soil stabilization

  • Proof Rolling

  • Sieve Analysis and depth verification of stabilized soils

  • Resistivity of Soils

  • Atterberg Limit Determinations

Construction Inspection:

• • Monitoring of earthwork operations under controlled conditions to ensure compliance with project specification

  • Pre-pour inspections of reinforcing steel and post-tension cable layouts

  • Inspection of cable stressing operations for post-tensioned slabs and structures

  • Observations and verification of soil stabilization via injection or dynamic compaction methods

  • Pier inspection and monitoring of pile installation for deep foundations

  • Inspections of excavations for shallow foundations

  • Masonry inspection for block wall construction

Concrete:

• • Field sampling and testing of concrete for temp., slump, air content and unit weight

  • Strength testing of concrete cylinders and cores

  • Expansion of concrete and grout mixes

  • Inspection of on-site batch plant operations

  • Non-Destructive Testing (NDT) of concrete structures and pavements

  • Full-time monitoring of concrete placement

  • Coarse and fine aggregate testing

  • Concrete mix designs

  • Evaluation of concrete mixes for durability

Fine and Coarse Aggregates:

• • Sieve Analysis

  • Absorption, minus 200, dry rodded unit weight, and specific gravity

  • Sand Equivalent on Fine Aggregates

  • Resistivity of Aggregates

  • Mortar and Grout Masonry Testing:

  • Mortar and grout mix designs

  • Mortar aggregate ratio, water content, and air content

  • Compressive Strength of Grout and Masonry