ETTL has carried out construction materials testing (CMT) and construction materials engineering (CME) projects throughout Texas and surrounding regions for more than five decades. Our highly qualified and capable professionals hold some of the most desirable certifications in our region, enabling us to provide critical testing and observation services necessary to bring projects to completion.

ETTL’s Construction Materials Testing and Engineering Capabilities:

ETTL’s CME Quality Control Program

ETTL participates in several proficiency sample testing programs, including those conducted by AASHTO Materials Reference Laboratory (AMRL); Cement & Concrete Reference Laboratory (CCRL); and TxDOT Materials & Test Division Bituminous Proficiency Sampling. As part of their routines, the programs involve ETTL's laboratory facilities, which run tests on representative samples prepared by these agencies. ETTL meets the requirements of ASTM E 329.

ETTL also has been inspected and approved for work by the Texas Department of Transportation. And, as the need arises, ETTL has been verified by the Corps of Engineers for work on various Corps projects.

ETTL Portland Cement Concrete Testing & Design Services
  • Making, curing and testing concrete cylinders.
  • Flexural strength testing of beams.
  • Determining unit weight, air content and slump of concrete.
  • Testing of aggregates for soundness, abrasion, specific gravity and gradation.
  • Design of Portland Cement concrete mixes.
  • Determining penetration resistance of hardened concrete.
  • Determining rebound number of hardened concrete.
ETTL Asphaltic Concrete Testing & Design Services
  • Bulk specific gravity and density of compacted mixtures.
  • Resistance to plastic flow using Marshall apparatus.
  • Resistance to deformation and cohesion by HVEEM apparatus.
  • Theoretical maximum specific gravity of asphaltic concrete paving mixtures.
  • Extraction of asphalt from paving mixtures.
  • Mechanical analysis of extracted aggregates.
Steel Testing Services
  • Visual inspection of steel during the erection phase, including inspection of structural and reinforcing steel such as post tension cables making sure they are correctly sized and located in compliance with construction drawings.
  • Bolt torque verification.
  • Visual inspection of welds.
  • Welder qualification determination.
Soils and Aggregates Testing for Construction Materials Engineering Projects
  • Moisture-density relationship (Proctor) of soils and aggregates.
  • Moisture, density of soils and aggregates by nuclear, ring sleeve or sand cone methods.
  • Soil classification and grain size analyses.
  • California bearing ratio.
  • Resistivity of soil material.
  • Consolidation and swell properties.
  • Hydraulic conductivity.
  • Los Angeles abrasion.
  • Designs for soil stabilization, making use of chemical additives to alter physical properties of soil.
  • Ready to learn more about our construction materials engineering and construction materials testing services? Contact the team at ETTL Engineers & Consultants today to get started on your next project.

New concrete tilt wall shell with Ductile-Crete slab

Ozan Creek Levee Rehabilitation – Ozan, AR

ETTL performs a wide variety of testing and quality control, including masonry observations.

A certified ETTL technician performs a FF/FL (Floor Flatness/Floor Levelness) test.