PPI maintains extensive, certified laboratories for completion of soils, aggregate, concrete, and asphalt testing.  PPI’s Laboratory Testing Resources include:

• AASHTO Certified Laboratories in Springfield, Missouri Headquarters [AASHTO R18, Soils, Aggregate, Concrete, Asphalt, Masonry, and Fireproofing – AASHTO Website – PPI Springfield];
• USACE Certified Laboratories in Springfield, Missouri Headquarters [USACE MTC Website]
• Full-service Construction Materials Testing Laboratories in Branson and Joplin, Missouri;
• Extensive Geotechnical Soils Laboratory Capabilities, including consolidation, triaxial, direct shear, permeability, and classification testing;
• Construction Materials Testing Soils Laboratories equipped to process Proctor compaction tests quickly;
• Aggregate, Concrete, and Asphalt Laboratories equipped for comprehensive aggregate source evaluation, concrete and asphalt mix design, and concrete and asphalt analysis.