Development of a Joint Density Specification: Phase I - Literature Review and Test Plan
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The objective of this research study is to develop a specification for longitudinal joins on hot-mixed asphalt (HMA) pavements. The study consisted of two phases: phase 1 reviewed all current specifications for longitudianl joints and phase 2 conducts a field-testing program to identify the most effective technique under Nevada's conditions. This report summarizes the findings and recommendations of Phase 1. A literature review was conducted to identify all current specifications for longitudinal joint density and to summarize all previous research efforts on the subject of longitudinal joint density. The review identified a total of ten state highway agencies and the Federal Aviation Administration (FAA) having specifications for density at the longitudinal joint. Few agencies also have specifications for the geometry of the joint. Three agencies currently implement incentives/disincentives programs based on the density of the longitudinal joint. A total of four independent research studies have been conducted to asses the various joint geometry and compaction techniques. The reseach studies highlighted the need for having joint density specification but they did not recommend and optimal method for joint construction. The second part of the report presents and interim joint density specification to be implement in Nevada and a field-testing program to identify the optimal method for joint construction under Nevada's conditions.
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Rogers, David Keith (University of Nevada, Reno, 1975)Detailed mapping on low sun-angle aerial photographs has separated actual outcrops from inferred and concealed features. In addition to recording the basic geology, physical properties such as joint spacing, permeability, ...
Ayoub, Mohamed Ibrahim (2010)The California Transportation Department (Caltrans) has a large number of highway bridges; and many of them are slab bridges. Although slab bridges are a common type of bridge, the current version of the Bridge Design ...
Middlebrook, John (University of Nevada, Reno, 1957)Contact-metamorphic deposits containing scheelite are found at Tungsten, Pershing County, Nevada. Upper Triassic limestone beds were replaced by emanations from granodiorite stocks, forming tactite deposits bearing tungsten. ...