The Grand Parkway Segments H and I is a Texas Department of Transportation (TxDOT) managed project and consists of the construction of a tollway extension east of the Greater Houston area spanning several counties from US 59 to Interstate 10. Segments H and I will extend approximately 44 miles. The project consists of the construction of underground storm sewer, soil embankments, concrete pavements and 39 overpasses/bridges. Approximately 10 million cubic yards of soil is expected to be moved and/or placed during construction.
Braun Intertec is providing the internal quality control construction materials testing for Ferrovial Agroman/Webber (Grand Parkway Infrastructure). During construction, soil samples are obtained for analysis to provide material parameters used for design considerations. The design testing currently being performed includes unconsolidated undrained strength tests, consolidated undrained strength test, direct shear strength tests, in situ soil/cement trial batches, organic content, and sulfate soundness.
Construction compliance testing includes atterberg limits, percent passing the 200 sieve, pH, compaction characteristics tests, chemical stabilization testing for embankments and retaining walls, and density testing of onsite soils. The concrete is tested for slump, air and unit weight during placement and laboratory compressive strength at the specified ages for compliance.
