Comparing The Volumetric And Mechanical Properties Of Laboratory And Field Specimens Of Asphalt Concrete
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Comparing The Volumetric And Mechanical Properties Of Laboratory And Field Specimens Of Asphalt Concrete
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Author : Louay Nadhim Mohammad
language : en
Publisher:
Release Date : 2016
Comparing The Volumetric And Mechanical Properties Of Laboratory And Field Specimens Of Asphalt Concrete written by Louay Nadhim Mohammad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Asphalt concrete categories.
This reports document research that was performed to (1) determine causes of variability and tolerances for volumetric and mechanical properties of dense-graded asphalt mixtures measured within and among the three specimen types; and (2) propose a practice for state departments of transportation to incorporate these results in specifications and criteria for quality assurance, mix design verification or validation, and structural design and forensic studies. The research was conducted in two phases. In Phase I, datasets of laboratory and field test data were collected and pooled in a meta-analysis in an attempt to determine levels of variability in asphalt mixtures and the factors causing variability among and between the three specimen types. Despite the inclusion of 25 extensive datasets representing roughly 8,000 individual mixtures in the meta-analysis, the results of the analysis were inconclusive. Phase II was then undertaken—a program testing specimens from paving projects across the United States to quantify the effects of process-based factors on the variability of volumetric and mechanical properties of the specimen types. The key outcome of the research is a proposed practice for evaluating the cause and magnitude of variability within and among the three specimen types. In addition, tolerances of volumetric and conversion factors between the three specimen types of mechanical properties evaluated are proposed based on the average difference between specimen comparisons for the mixtures evaluated in Phase II. Agencies may use these proposed values to evaluate and adjust their current tolerances.
Comparing The Volumetric And Mechanical Properties Of Laboratory And Field Specimens Of Asphalt Concrete
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Author : Louay Nadhim Mohammad
language : en
Publisher:
Release Date : 2016
Comparing The Volumetric And Mechanical Properties Of Laboratory And Field Specimens Of Asphalt Concrete written by Louay Nadhim Mohammad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Asphalt concrete categories.
This reports document research that was performed to (1) determine causes of variability and tolerances for volumetric and mechanical properties of dense-graded asphalt mixtures measured within and among the three specimen types; and (2) propose a practice for state departments of transportation to incorporate these results in specifications and criteria for quality assurance, mix design verification or validation, and structural design and forensic studies. The research was conducted in two phases. In Phase I, datasets of laboratory and field test data were collected and pooled in a meta-analysis in an attempt to determine levels of variability in asphalt mixtures and the factors causing variability among and between the three specimen types. Despite the inclusion of 25 extensive datasets representing roughly 8,000 individual mixtures in the meta-analysis, the results of the analysis were inconclusive. Phase II was then undertaken--a program testing specimens from paving projects across the United States to quantify the effects of process-based factors on the variability of volumetric and mechanical properties of the specimen types. The key outcome of the research is a proposed practice for evaluating the cause and magnitude of variability within and among the three specimen types. In addition, tolerances of volumetric and conversion factors between the three specimen types of mechanical properties evaluated are proposed based on the average difference between specimen comparisons for the mixtures evaluated in Phase II. Agencies may use these proposed values to evaluate and adjust their current tolerances.
Bearing Capacity Of Roads Railways And Airfields
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Author : Andreas Loizos
language : en
Publisher: CRC Press
Release Date : 2017-07-20
Bearing Capacity Of Roads Railways And Airfields written by Andreas Loizos and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-20 with Technology & Engineering categories.
Bearing Capacity of Roads, Railways and Airfields includes the contributions to the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017, 28-30 June 2017, Athens, Greece). The papers cover aspects related to materials, laboratory testing, design, construction, maintenance and management systems of transport infrastructure, and focus on roads, railways and airfields. Additional aspects that concern new materials and characterization, alternative rehabilitation techniques, technological advances as well as pavement and railway track substructure sustainability are included. The contributions discuss new concepts and innovative solutions, and are concentrated but not limited on the following topics: · Unbound aggregate materials and soil properties · Bound materials characteritics, mechanical properties and testing · Effect of traffic loading · In-situ measurements techniques and monitoring · Structural evaluation · Pavement serviceability condition · Rehabilitation and maintenance issues · Geophysical assessment · Stabilization and reinforcement · Performance modeling · Environmental challenges · Life cycle assessment and sustainability Bearing Capacity of Roads, Railways and Airfields is essential reading for academics and professionals involved or interested in transport infrastructure systems, in particular roads, railways and airfields.
Advanced Testing And Characterization Of Bituminous Materials Two Volume Set
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Author : Andreas Loizos
language : en
Publisher: CRC Press
Release Date : 2009-05-14
Advanced Testing And Characterization Of Bituminous Materials Two Volume Set written by Andreas Loizos and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-05-14 with Technology & Engineering categories.
Bituminous materials are used to build durable roads that sustain diverse environmental conditions. However, due to their complexity and a global shortage of these materials, their design and technical development present several challenges. Advanced Testing and Characterisation of Bituminous Materials focuses on fundamental and performance testing
Report
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Author :
language : en
Publisher:
Release Date : 1991
Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Highway research categories.
Compare In Situ Strength Of Asphalt Concrete Treated Base
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Author : California. Office of Transportation Laboratory
language : en
Publisher:
Release Date : 1974
Compare In Situ Strength Of Asphalt Concrete Treated Base written by California. Office of Transportation Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Asphalt concrete categories.
Field And Laboratory Investigations On Hot Mix Asphalt Concrete
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Author : John W. Shupe
language : en
Publisher:
Release Date : 1955
Field And Laboratory Investigations On Hot Mix Asphalt Concrete written by John W. Shupe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Asphalt categories.
A Comparison Of Field And Laboratory Permeability Of Hot Mix Asphalt Concrete
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Author : Adnan Rashid Qazi
language : en
Publisher:
Release Date : 2004
A Comparison Of Field And Laboratory Permeability Of Hot Mix Asphalt Concrete written by Adnan Rashid Qazi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Asphalt concrete categories.
Evaluation Of Gap Graded Asphalt Concrete Mixtures
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Author : Dah-yinn Lee
language : en
Publisher:
Release Date : 1973
Evaluation Of Gap Graded Asphalt Concrete Mixtures written by Dah-yinn Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Asphalt concrete categories.
This report presents the results of a comparative laboratory study between well-graded and gap-graded aggregates used in asphalt concrete paving mixtures. There was a total of 424 batches of asphalt concrete mixtures and 3,960 Marshall and Hveem specimens. There is strong evidence from this investigation that, with proper combinations of aggregates and asphalts, both continuous and gap-graded aggregates can produce mixtures of high density and of qualities meeting current design criteria. There is also reason to believe that the unqualified acceptance of some supposedly desirable, constant, mathematical relationship between adjacent particle sizes of the form such as Fuller's curve is not justified. It is recommended that the aggregate grading limits be relaxed or eliminated and that the acceptance or rejection of an aggregate to be used in asphalt pavement be based on individual mixture evaluation. Furthermore, because of the potential attractiveness of gap-graded asphalt concrete in cost, quality, skid and wear resistance, and construction, selected gap-gaded mixtures are recommended for further tests both in the laboratory and in the field, especially in regard to ease of compaction and skid and wear resistance.
Asphalt Concrete For Cold Regions
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Author :
language : en
Publisher:
Release Date : 1980
Asphalt Concrete For Cold Regions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Asphalt concrete categories.