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Physical Testing Lead Technician Remone Kendricks conducts bridge steel tensile strength test.
At a temperature of 140 degrees, the “hot house” dries aggregate to reduce moisture content for testing. OMAT’s mission is to sample, test and inspect all materials to ensure quality and durability in our construction projects.
Did you know that road surfaces throughout the state have a distinct recipe designed for sustainability, preservation and safety? And that every type of material used or installed on Georgia DOT construction and maintenance projects must be tested and approved before use? Whether it’s concrete curing time, steel tensile strength, assessing potential ground contaminants, evaluating new products or everything in between — Georgia DOT’s Office of Materials and Testing (OMAT) determines the sweet spot formula for all products to match the unique characteristics of each project. Down to the bolts. The roadway chefs at OMAT vigorously test and analyze these products and create the recipes to ensure quality and safety. From the type of materials used, like aggregate, to
By Bre Kirkpatrick SPECIAL TO CEG
Soils Lab Supervisor Harold Cox performs elutriation test, which separates target minerals based on size, shape and density in order to quickly determine the clay content of the soil.
evaluating new products and facilitating the submission process for companies who present their products for use, OMAT provides the official stamp of approval for all materials used on roads and bridges. Concrete Strength One such test is a strength test to determine how much force concrete can withstand prior to failing and crumbling. First, the machine operator places a cylinder of concrete mixed for a specific GDOT project number inside a compression machine. The project number is for organizational purposes; each project has different mixes of assigned materials and the team must identify which substance goes where. The machine increases the amount of pressure on the consee OMAT page 6