Concrete test cylinders curing on racks in CTL's lab

Construction Materials
Testing

ASTM-compliant testing backed by an accredited lab.

Coastal Testing Laboratories provides comprehensive Construction Materials Testing (CMT) services for residential, commercial, and infrastructure projects across Southeast Texas.

Request a Quote Call (713) 477-0121

Core Testing Services

Our field and laboratory testing programs are managed by ACI, TxDOT, and NICET-certified technicians, with all testing and documentation performed under ASTM, TxDOT and other applicable standards. Whether for new construction, inspection, or project closeout, CTL delivers dependable results — accurate, verified, and on schedule.

Asphalt Testing

From mix design to field density, our technicians ensure your pavement meets TxDOT and project specifications for durability and performance.

Asphaltic Concrete Mix Design & Review

Stability Testing (Hveem / Marshall)

Extraction and Gradation Analysis

Density and Compaction Testing

Thickness Sets (3″ Diameter – First 6 Inches)

Density of Cores

Hot Mix Plant Control and Monitoring

Penetration, Ductility, and Viscosity Testing

Asphalt Batch Plant Observation

Concrete Testing & Mix Design

CTL’s laboratory and field technicians perform certified testing for fresh and hardened concrete, ensuring quality and strength compliance for every pour.

Concrete Mix Design, Inspection, and Testing

Cylinder and Beam Strength Testing (ASTM C39 / C78)

Slump and Air Content Testing

Concrete Mix Design Review and Confirmation

Core Sampling and Depth Verification (4″ Diameter – First 7 Inches)

Mortar / Grout Compressive Strength Cubes

Batch Plant and Concrete Delivery Verification

Concrete Temperature

Cylinder Casting

Soils & Earthwork Testing

CTL’s geotechnical and CMT laboratories perform comprehensive soil testing to support roadway, foundation, and site development projects.

Standard and Modified Proctor Tests (Moisture–Density Relationship)

Plasticity Index (Raw and Stabilized Soils)

Grain Size Analysis (ASTM D-2217)

Permeability (Falling Head Method)

California Bearing Ratio (CBR – In-Lab)

Compression Testing – Cement-Stabilized Sand

Lime and Cement Content Determination

Pulverization and Depth Verification for Stabilized Soils

In-Place Density and Compaction Testing

Proof-Rolling Observation

Aggregates Testing

Our aggregate testing services verify material performance and gradation for use in concrete, asphalt, and base materials. Testing is conducted in accordance with ASTM, TxDOT, and other applicable methods.

Sieve Analysis (Dry / Wet)

Finer Than #200 Mesh (Decantation)

Specific Gravity and Absorption

Unit Weight and Bulk Density

Abrasion and Sulfate Soundness (5 Cycles)

Sand Equivalent Testing (Minimum 3 Samples)

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