By: Richard B. Rogers, PE
Did you know that traditional pavement design methods that use 18KESAL’s will not handle the oil and gas industry super loads? Why? Because the AASHTO Axel Load Equalency Factors were developed in a study that did not include loads great enough to exceed the elastic conditions in the pavement layers. The oil and gas industry super loads have been shown to be more than double the legal load limits and can cause significant pavement distress in a single pass. Each layer of the proposed pavement design should be evaluated to ensure its elastic stress/strain limits have not been exceeded.
The Cement Council of Texas has experience in designing pavements for heavy overloads. Concrete is an ideal heavy-duty paving material. Its strength helps withstand the stress of the super loads, and it also spreads the loads over wider areas than flexible pavements. Base/subgrade stresses are significantly reduced, and premature pavement failures are averted. CCT can help state and local agencies evaluate economical road designs that actually last for their intended service lives. Give us a call.
"This blog was previously posted in the Cement Council of Texas' "Texas Cement and Concrete Blog" (now inactive) and was carried forward to the current blog ("Cementx Pavement Blog") as it contains content that may be of interest to the reader".
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.