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Maximize the Quality and Longevity of any Highway Work: Ten peer-reviewed papers give you a timely look at HMA smoothness measurements, specifications, and equipment. Evidence shows that pavements constructed with low roughness measurements perform longer with fewer needed maintenance activities than pavements with a higher level of initial roughness. This collection of papers, written by industry experts, provides and overview of the current approaches to constructing smooth HMA pavements.

Three sections cover: State Agency Perspectives - provides insight into both the history of the development and the implementation of ride quality specifications for new hot mix asphalt pavements in Alabama, Arizona, New Jersey, Virginia, and Tennessee. These papers highlight the wide range of differences in equipment and approaches used to quantify HMA smoothness by state agencies across the country. This information will provide the readers with insight into complexities associated with developing and implementing ride quality specifications. National and International Perspectives - uses analysis of the Long Term Pavement Performance (LTPP) national pavement database to determine the effect of various construction alternatives on the smoothness of the final HMA surface. It also presents correlation equations that relate the traditional, but slow, method of measuring roughness with a hand-operated profilograph to that measured with the state-of-the-art vehicle-mounted. A second paper compares the use of six devices for measuring roughness on recently constructed Taiwan highways. This information will prove especially useful for agencies faced with assessing ride quality in confined urban areas. Equipment Comparisons, Materials Considerations, and Analyses - focuses on how various HMA mixtures, friction courses, and construction practices influence smoothness measurements and pavement quality; and compares the results obtained from an inclinometer profiler and a vehicle mounted profiler when used to test a wide range of HMA mixtures. Correlations between construction practices and their influence on roughness are also presented. It also discusses a new method for analyzing the raw profile obtained by a wide range of profilers. This analysis method can be used to improve data processing for any equipment that collects the raw profile.

This comprehensive introduction to rock mechanics treats the basics of rock mechanics in a clear and straightforward manner and discusses important design problems in terms of the mechanics of materials. This extended second edition includes an additional chapter on rock bursts and bumps, a part on basic dynamics, and numerous additional examples and exercises throughout the chapters. Developed for a complete class in rock engineering, Design Analysis in Rock Mechanics, Second Edition uniquely combines the design of surface and underground rock excavations and addresses: Rock slope stability in surface excavations, from planar block and wedge slides to rotational and toppling failures + Shaft and tunnel stability, ranging from naturally supported openings to analysis and design of artificial support and reinforcement systems + Entries and pillars in stratified ground + Three-dimensional caverns, with an emphasis on cable bolting and backfill + Geometry and forces of chimney caving, combination support, and trough subsidence + Rock bursts and bumps in underground excavations, with a focus on dynamic phenomena and on fast and sometimes catastrophic failures. The numerous exercises and examples familiarize the reader with solving basic practical problems in rock mechanics through various design analysis techniques and their applications. Supporting the main text, appendices provide supplementary information about rock, joint, and composite properties, rock mass classification schemes, useful formulas, and an extensive literature list. The large selection of problems at the end of each chapter can be used for homework assignments. Explanatory and illustrative in character, this volume is suited for courses in rock mechanics, rock engineering and geological engineering design for undergraduate and first-year graduate students in mining, civil engineering, and applied earth sciences. Moreover, it will form a good introduction to the subject of rock mechanics for earth scientists and engineers from other disciplines.