Problem URETEK has a long history of performing URETEK Deep Injection ® (UDI), a ground improvement method where polymer grout is injected under pavements/built structures and into soils to improve the soil strength. UDI has been effective time and again in stabilizing soils of various types. However, expansive soils by nature behave differently than many other soil types. URETEK decided to perform laboratory testing to ensure that the UDI process can strengthen, stabilize, and improve the strength of expansive soils. To this end, URETEK partnered with Boudreau Engineering in Atlanta, Georgia, to inject URETEK polymer into samples of highly expansive clay. Analysis URETEK focused their study on analyzing the resilient modulus and quick shear of expansive soils following injection.

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