Download or read book Tests for Evaluating Degradation of Base Course Aggregates written by Terry R. West and published by . This book was released on 1970 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tests for Evaluating Degradation of Base Course Aggregates written by Terry R. West and published by Highway Research Board. This book was released on 1970 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was undertaken to develop procedures for predicting the amount and effects of degradation for different natural aggregates when used in a roadway base or subbase course, and thereby for determining their suitability, aggregate samples were collected from 140 quarries in 12 states, divided into four classes (carbonates and clastic sedimentaries, coarse-grained igneous and metamorphics, basalts and basalt-like rocks, and heterogenous gravels), and submitted to eight tests: percent loss, Los Angeles abrasion; freeze-thaw loss; specific gravity, percent absorption; insoluble residue; differential thermal analysis; x-ray diffraction analysis; and petrographic analysis, including a battery of tests for polished and thin section. Test conclusions regarding the four classes are given and discussed, and detailed data on samples are tabulated in appendices.
Download or read book Degradation of Base Course Aggregates During Compaction written by N. B. Aughenbaugh and published by . This book was released on 1966 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made of the mechanics of constricution compaction degradation, the properties of mineral aggregates that influence degradation, and existing laboratory tests for evaluating degradation susceptibility. Field investigations consisted of concrete-base tests. Laboratory tests investigated were the Los Angeles abrasion, the mechanical kneading compactor, repetitive loading, the modified AASHO, freeze-thaw, and absorption and specific gravity. Petrographic studies included megascopic and microscopic examination, X-ray analysis, differential thermal analysis, insoluble residue analysis, and chemical analysis. The greatest degradation to the aggregate mass occurs during the first compactor pass, with progressively less breakage resulting from each successive pass. Degradation and density are interrelated and are affected by each other. One-size materials are the most susceptible to degradation and dense-graded materials are the least susceptible. No single laboratory physical test can be used to evaluate aggregate degradation quality, although the Los Angeles test suffices for unweathered carbonate aggregates. Freeze-thaw action lowers the degradation quality of aggregates. Petrographic analysis is a reliable means of evaluating degradation quality and is recommended as a routine laboratory test. (Author).
Download or read book Geomorphic Seismic and Geotechnical Evaluation of Sand and Gravel Deposits in the Sheridan Wyoming Area written by Jack K. Odum and published by . This book was released on 1988 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implication of Aggregates in the Design Construction and Performance of Flexible Pavements written by Hans G. Schreuders and published by ASTM International. This book was released on 1989 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Track Geotechnology and Substructure Management written by Ernest Theodore Selig and published by Thomas Telford. This book was released on 1994-10-05 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive study provides practical advice and guidance on the important topics of rail transport and ground engineering, the use of which will result in optimum quality with the minimum maintenance effort and the most economical use of resources. The authors have synthesized all of their international knowledge and experience in this field, and produced, for the first time, a definitive guide for the design, construction, maintenance and renewal of railway track as they relate to geotechnology.
Download or read book Basecourse Test Evaluation Project written by Wilhelm Glen Bartholomeusz and published by . This book was released on 1986 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report No FHWA RD written by United States. Federal Highway Administration. Offices of Research and Development and published by . This book was released on 1977 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1967 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Standard Test Method for Resistance to Degradation of Small size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine written by American Society for Testing and Materials and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microscopic and X ray Diffraction Examination of Basalt to Determine Factors Affecting Durability written by and published by . This book was released on 1974 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unbound Aggregates in Roads written by R.H. Jones and published by Butterworth-Heinemann. This book was released on 2016-04-20 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unbound Aggregates in Roads contains the proceedings of the International Symposium on Unbound Aggregates in Roads (UNBAR3) held at the University of Nottingham, England, on April 11-13, 1989. The papers focus on unbound aggregates used in road construction and cover topics ranging from drainage and permeability to placement and compaction of unbound aggregates, design philosophy, specification, and compliance. This book consists of 49 chapters divided into eight sections and opens with an overview of the functions of unbound aggregates in roads, followed by a discussion on the mechanical properties of different aggregates and theoretical aspects of granular materials. The following chapters focus on granular drainage layers in pavement foundations; residual stresses caused by compaction in granular materials; and alternative materials for road construction such as steel slags and natural and waste materials. The use of unbound road aggregates in various countries such as Italy, France, Germany, and Portugal is also considered. This monograph will be a useful resource for designers, aggregate producers, contractors, specification writers, and materials engineers.
Download or read book SIPRE Report written by and published by . This book was released on with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CRREL Technical Publications 1950 1975 written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1992 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Aggregates and Armourstone Evaluation written by John-Paul Latham and published by Geological Society of London. This book was released on 1998 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The maintenance and upgrading of our built environment, including large sections of coastal defences, relies heavily on natural construction materials. The text aims to highlight a range of pressing research issues in natural construction materials of direct relevance to an industry facing growing pressures for environmental sustainability and standardization of product quality within Europe. Tests and specifications given in the forthcoming Eurostandards for aggregates and armourstones are considered and correlated with older more widely used tests, including those which could impact upon current road safety. This text should be useful to: aggregate and amourstone suppliers and users; civil and engineering geologists; quarry companies; and Local and County Authority engineers and coastal engineers.
Download or read book Aggregate Tests Related to Asphalt Concrete Performance in Pavements written by Prithvi S. Kandhal and published by Transportation Research Board. This book was released on 1998 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
