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WebPerforms construction materials testing as requested by the engineering department to support field service operations or engineering evaluations. The testing could include soil density or concrete testing, and excavation observations; Assist with the installation and monitoring of in-situ geotechnical instrumentation WebAmerican Concrete Institute (ACI) offers one-day certification s. These certifications include testing of concrete cylinders and a complete battery of tests conducted on concrete aggregate and concrete. ACI Certifications are offered through the Colorado Ready Mixed Concrete Association. CRMCA may be contacted at 303-290-0303 or WebSpecimen sizes can range from 38mm to 100mm, although considerably larger samples can be used, provided the correct equipment is used. Figure 1 - Stress condition in a standard triaxial test. Figure 2 - Total/effective stress. σ1 or σV = Axial / Vertical Stress. σ3 or σh = Confining pressure / Horizontal Stress. timothy paul baymon wikipedia