Further Evaluations Of Skid Resistant Characteristics Of Carbonate Rock Aggregates
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Further Evaluations Of Skid Resistant Characteristics Of Carbonate Rock Aggregates
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Author : Kenneth C. Afferton
language : en
Publisher:
Release Date : 1978
Further Evaluations Of Skid Resistant Characteristics Of Carbonate Rock Aggregates written by Kenneth C. Afferton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Aggregates (Building materials) categories.
Skid Resistant Characteristics Of Carbonate Rock Aggregates
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Author : John J. Quinn
language : en
Publisher:
Release Date : 1975
Skid Resistant Characteristics Of Carbonate Rock Aggregates written by John J. Quinn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Aggregates (Building materials) categories.
Surface Characteristics Of Roadways
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Author : W. E. Meyer
language : en
Publisher: ASTM International
Release Date : 1990
Surface Characteristics Of Roadways written by W. E. Meyer and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Pavements categories.
Evaluation Of Limestone Aggregates In Asphalt Wearing Courses Phase Ii
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Author : Prithvi S. Kandhal
language : en
Publisher:
Release Date : 1992
Evaluation Of Limestone Aggregates In Asphalt Wearing Courses Phase Ii written by Prithvi S. Kandhal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aggregates (Building materials) categories.
Aggregates And Skid Resistance
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Author : Kathleen T. Diringer
language : en
Publisher:
Release Date : 1990
Aggregates And Skid Resistance written by Kathleen T. Diringer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Aggregates (Building materials) categories.
Skid Resistance Implementation Study
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Author :
language : en
Publisher:
Release Date : 1994
Skid Resistance Implementation Study written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Pavements categories.
Evaluation Of The Mmls3 For Accelerated Wearing Of Asphalt Pavement Mixtures Containing Carbonate Aggregates
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Author : Cristian Druta
language : en
Publisher:
Release Date : 2014
Evaluation Of The Mmls3 For Accelerated Wearing Of Asphalt Pavement Mixtures Containing Carbonate Aggregates written by Cristian Druta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Aggregates (Building materials) categories.
The purpose of this study was to develop an accelerated wearing protocol for assessing the susceptibility of asphalt surface mixtures to polishing. This was the second phase of the study. The first phase focused on assessing the characteristics of selected carbonate aggregates available in Virginia that are normally classified as polishing and thus not considered suitable for use in pavements except for those roads with an average daily traffic of less than 750 vehicles per day. The selection of aggregates used in pavements is critical in producing surfaces that will continue to provide good skid resistance through a lengthy service life. The specifications of the Virginia Department of Transportation (VDOT) call for non-polishing aggregate for use in most surface layers. The study was aimed at making use of locally available polishing aggregates that can reduce the cost of asphalt mixtures while maintaining satisfactory wearing and skid characteristics of the pavements. The objectives of the research were (1) to evaluate the polishing/wear features of mixtures containing limestone aggregate in the laboratory using an accelerated method; (2) to compare friction properties of the laboratory-polished specimens with actual pavement friction measurements; and (3) to compare friction properties of mixtures containing carbonate rock or blends with those of mixtures with non-carbonate rocks. The study included three types of aggregates, i.e., limestone, quartzite, and granite, and blends of these aggregates. The surface mixtures studied were conventional SM-9.5 and SM-12.5 mixtures containing various percentages of limestone, limestone recycled asphalt pavement, and limestone-granite/quartzite blends. The suggested test protocol to evaluate the polishing of asphalt concrete specimens prepared in the laboratory was developed using the third-scale model mobile load simulator (MMLS3). The MMLS3 is capable of applying realistic rolling wheel contact stresses similar to those on highways from the moving traffic. The skid resistance, friction, and texture of actual pavement surfaces and laboratory-fabricated specimens were measured after different polishing intervals. Skid resistance and frictional characteristics were measured by the British pendulum tester, dynamic friction tester, and locked-wheel skid tester; the circular texture meter was used to measure surface macrotexture. Results showed that the MMLS3 can be used to simulate traffic wearing of asphalt concrete specimens of different shapes and sizes in the laboratory including core specimens removed from existing pavements and that the BPT is effective in characterizing changes in friction on specimens that are subjected to simulated trafficking via the MMLS3. Further, test specimens should have a high initial macrotexture and mixtures should have good stability so that the wearing effects are focused on the aggregates. The study recommends that the Virginia Center for Transportation Innovation and Research (VCTIR) work with Virginia Tech and VDOTs western districts to design and conduct an experiment to explore a series of carbonate / non-carbonate aggregate blends for asphalt mixtures and that the mixture gradations be designed to prevent the absence of macrotexture from impacting the ability to measure the polish of the coarse aggregate structure of the experimental mixtures. VCTIR should purchase tires with different tread patterns and try them on the MMLS3 to evaluate the polishing rate of specimens in more detail.
Transportation Research Record
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Author :
language : en
Publisher:
Release Date : 1993
Transportation Research Record written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Air travel categories.
Development Implementation Of The Division Of Research And Technology Web Page
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Author :
language : en
Publisher:
Release Date : 2002
Development Implementation Of The Division Of Research And Technology Web Page written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Highway engineering categories.
Native Aggregates For Skid Resistance
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Author : Scott P. Hall
language : en
Publisher:
Release Date : 1987
Native Aggregates For Skid Resistance written by Scott P. Hall and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aggregates (Building materials) categories.