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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
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      <title>TOTAL COST REHABILITATION DESIGN METHOD FOR USE IN PAVEMENT MANAGEMENT</title>
      <link>https://trid.trb.org/View/390717</link>
      <description><![CDATA[The deteriorating condition of paved road networks and the limited resources available for rehabilitating these roads are challenging highway administrators and managers in both developing and developed countries.  Research conducted in Brazil allowed the development of performance prediction models for pavement roughness, raveling, potholing, rutting, and cracking as a function of significant variables that define pavement structure, environment, and traffic loads.  These models were incorporated into a microcomputer program that generates alternative rehabilitation strategies, predicts the performance of each strategy that meets the allowable criteria, and produces a set of the five best feasible strategies according to the predicted total cost.  Presentation of the analysis package and demonstration of its application are achieved by discussion of the background, rationale, and summary of the performance models; a brief review of the structure of the package; and presentation of a case study.  This method of analysis can be used as a project-level pavement management tool compatible with the needs of low- to medium-volume road links in tropical and subtropical environments or for evaluating a network of roads requiring rehabilitation.  For applications at the network level, a key feature is its full compatibility with the Expenditure Budgeting Model (EBM), which means that its output can be used as input to EBM to address the budgetary-constraint problem.]]></description>
      <pubDate>Mon, 06 Jun 1994 00:00:00 GMT</pubDate>
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      <title>GEOLOGY AND GEOTECHNICAL PROPERTIES OF LATERITE GRAVEL</title>
      <link>https://trid.trb.org/View/62234</link>
      <description><![CDATA[Laterization processes were studied and samples of laterite gravel collected at 40 sites in Thailand, Australia, Brazil, Ghana, Portuguese Angola, and Georgia (USA) to determine classification, field associations, genesis, and engineering properties important in road and airfield construction. Lateritic soils are self-hardening and may contain either laterite rock or nodular, laterite gravel. Tropical soils which are not self-hardening and which lack appreciable laterite rock or laterite gravel are called here tropical red soils. The soils studied in this report classify as sands and gravels in the Unified Soil Classification System. Generally they are poorly sorted, strongly fine-skewed, leptokurtic, and, on the average, contain approximately 12 percent fines. These soils have originated by the hydrolytic destruction of primary silicate minerals in warm, tropical to subtropical weathering environments which exhibit distinct wet and dry seasons, and are generally free draining. Laterite gravel is of primary importance in construction. Laterite rock requires crushing, and self-hardening laterite may be difficult to identify and thus may be confused with tropical red soils. Foreign engineers have found that two official U.S. specifications are too restrictive. They have developed base and subbase specifications suitable for road and airfield construction using laterite gravel.]]></description>
      <pubDate>Wed, 06 Oct 1976 00:00:00 GMT</pubDate>
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