By: Jan R. Prusinski, PE
The National Concrete Pavement Technology Center (CP Tech Center) at Iowa State University has recently published a comprehensive "Guide to Full-Depth Reclamation (FDR) with Cement." This 90-page manual was developed in cooperation with the Portland Cement Association and many product experts from around the country, including CCT's own Matthew Singel. It will serve as a centerpiece in CCT's just-announced one-day seminar series "Best Practices for Cement Stabilization and Roller-Compacted Concrete Pavements," to be held at seven Texas locations between August and December, 2017.
FDR is often the lowest-cost method of recycling failed asphalt pavements into highly durable bases. It is an in-place operation that pulverizes the existing surface and base, then adds a small amount of cement to provide a fast-curing and long-lasting base that stands up to heavy trucks and saturated conditions. Construction is fast, often completed in one day, so light traffic can be applied afterwards; and the need to excavate huge amounts of old material and replace it with new base material--and the associated heavy truck traffic--is avoided.
The guide provides not only an introduction to FDR with cement, but it also comprehensively covers key topics:
If you are interested in being trained in this technique, using the new guide, please consider attending one of the CCT's 7 upcoming seminars. To find out more about FDR, and download the guide, visit the CP Tech Center's website.
The Cement Council of Texas has redesigned it's website for 2017. You can still find us at www.cementx.org but the site is now is easier to read and navigate, as well as being mobile and tablet friendly. We want to make this site better for you, the building professional, and make it your Texas resource for news, knowledge and events on concrete and cement pavements, infrastructure, and construction. We're celebrating by giving away valuable publications on concrete pavement and stabilized bases/subgrades for subscribers to our email updates. And you'll also be registered for a May 1st drawing for even more valuable publications from the American Concrete Institute and the Portland Cement Association.
By: Matthew W. Singel, PE
Intelligent compaction (IC) refers to the continuous, real-time monitoring of a roller’s effectiveness in achieving a specified density, stiffness, etc. This continuous feedback approach to pavement construction has tremendous implications in the realm of quality assurance....
By: Matthew W. Singel, PE
Extended periods of high temperatures and low rainfall wreak havoc on agriculture, drinking water supply and lake access for recreation. For civil engineers and public works professionals, these conditions can create an imbalance in the subgrade moisture content, leaving soils under the center of the road at a higher moisture level than the edges, which dry out more quickly. This is most prevalent on roads with deep drainage ditches (i.e. subgrades with exposed sides). In the presence of expansive clay soils, deep longitudinal cracking often occurs near the road edge.
The Cementx Pavement Blog seeks to make pavement owners, engineers and contractors smarter about selecting, designing, constructing and maintaining pavements. New blog postings began February 1, 2017; however, we carried over pavement-related blog postings from our older blog, the "Texas Cement and Concrete Blog," which ran until December 2016.