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Cement Stabilization for Base and Subgrade: Combining Lime and Cement to Stabilize High PI Soils

As the nation’s infrastructure ages, agencies at all levels are tasked with maintaining and rehabilitating their infrastructure. Sustainable engineering technologies in pavement rehabilitation, such as full-depth reclamation (FDR), could be the answer for agencies in their quest to provide taxpayers with high-quality infrastructure while being good stewards of public funds. Full-depth reclamation of asphalt pavement is a rehabilitation method that involves recycling an existing asphalt pavement and its underlying layer(s) into a new base layer. The FDR process begins with using a road reclaimer to pulverize an existing asphalt pavement and a portion of the underlying base, subbase, and/or subgrade. Usually, the pulverized material is uniformly blended with an additional stabilizing material such as cement to provide an upgraded, homogeneous material. Finally, the stabilized material is compacted in place with rollers. The result is a stiff, stabilized base that is ready for a new rigid or flexible surface course. This presentation introduces the FDR with cement process and discusses issues related to project selection, design, construction, testing/quality control, and the latest innovations. The Cement Council of Texas presentation will equip engineering consultants with facts and information to work with their clients to make long lasting and economical pavement stabilization decisions. Designers and builders of Highways, Streets, Parking facilities, and Runways will benefit by improving their knowledge of the processes and techniques demonstrated in the presentation.

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Speaker

Randy Bowers PE 
Program Manager
Cement Council of Texas

ASCE TEXAS SECTION OFFICE

Call: 512-472-8905

Email: office@texasce.org

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