Author:
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 129
Book Description
The objective of this project was to provide a better understanding of how various virgin aggregate and recycled asphalt pavement (RAP) mixtures for surface layers affect the performance of gravel or crushed rock roads and, with further analysis, to determine the optimal RAP content for Minnesota gravel roads. This project included a literature review, preliminary laboratory testing, economic and feasibility analysis, and two field studies. Several studies regarding the use of RAP materials for road surfaces were reviewed. Then, laboratory tests on various RAP materials, one virgin aggregate, and mixtures of RAP materials and virgin aggregate were conducted to observe the effect of RAP on the index properties of the materials and the engineering properties of the mixtures. Initially, six test sections were constructed with various surface aggregates in two locations. Virgin RAP-aggregate blends having 15% to 60% RAP contents were placed as surface aggregate. Then, three more test sections were constructed using RAP-aggregate blends having 50%, 70%, and 80% RAP contents. Several field tests, including lightweight deflectometer, dynamic cone penetrometer, scrape, and dustometer tests, were performed to evaluate the test sections. This report provides insights regarding the effect of using RAP material on surface layers to reduce the use of virgin aggregates. It was concluded that the optimal RAP content for unpaved road surfaces changes according to the properties of the materials used, testing methods, and site conditions.
Optimal RAP Content for Minnesota Gravel Roads
Author:
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 129
Book Description
The objective of this project was to provide a better understanding of how various virgin aggregate and recycled asphalt pavement (RAP) mixtures for surface layers affect the performance of gravel or crushed rock roads and, with further analysis, to determine the optimal RAP content for Minnesota gravel roads. This project included a literature review, preliminary laboratory testing, economic and feasibility analysis, and two field studies. Several studies regarding the use of RAP materials for road surfaces were reviewed. Then, laboratory tests on various RAP materials, one virgin aggregate, and mixtures of RAP materials and virgin aggregate were conducted to observe the effect of RAP on the index properties of the materials and the engineering properties of the mixtures. Initially, six test sections were constructed with various surface aggregates in two locations. Virgin RAP-aggregate blends having 15% to 60% RAP contents were placed as surface aggregate. Then, three more test sections were constructed using RAP-aggregate blends having 50%, 70%, and 80% RAP contents. Several field tests, including lightweight deflectometer, dynamic cone penetrometer, scrape, and dustometer tests, were performed to evaluate the test sections. This report provides insights regarding the effect of using RAP material on surface layers to reduce the use of virgin aggregates. It was concluded that the optimal RAP content for unpaved road surfaces changes according to the properties of the materials used, testing methods, and site conditions.
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 129
Book Description
The objective of this project was to provide a better understanding of how various virgin aggregate and recycled asphalt pavement (RAP) mixtures for surface layers affect the performance of gravel or crushed rock roads and, with further analysis, to determine the optimal RAP content for Minnesota gravel roads. This project included a literature review, preliminary laboratory testing, economic and feasibility analysis, and two field studies. Several studies regarding the use of RAP materials for road surfaces were reviewed. Then, laboratory tests on various RAP materials, one virgin aggregate, and mixtures of RAP materials and virgin aggregate were conducted to observe the effect of RAP on the index properties of the materials and the engineering properties of the mixtures. Initially, six test sections were constructed with various surface aggregates in two locations. Virgin RAP-aggregate blends having 15% to 60% RAP contents were placed as surface aggregate. Then, three more test sections were constructed using RAP-aggregate blends having 50%, 70%, and 80% RAP contents. Several field tests, including lightweight deflectometer, dynamic cone penetrometer, scrape, and dustometer tests, were performed to evaluate the test sections. This report provides insights regarding the effect of using RAP material on surface layers to reduce the use of virgin aggregates. It was concluded that the optimal RAP content for unpaved road surfaces changes according to the properties of the materials used, testing methods, and site conditions.
Public Roads
Superpave Mix Design
Author: Asphalt Institute
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
The Geology and Magnetite Deposits of Northern St. Louis County, Minnesota
Author: Frank Fitch Grout
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 716
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 716
Book Description
AASHTO Guide for Design of Pavement Structures, 1993
Author: American Association of State Highway and Transportation Officials
Publisher: AASHTO
ISBN: 1560510552
Category : Pavements
Languages : en
Pages : 622
Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Publisher: AASHTO
ISBN: 1560510552
Category : Pavements
Languages : en
Pages : 622
Book Description
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
The Limestones and Marls of Minnesota
Significant Findings from Full-scale Accelerated Pavement Testing
Author: Frederick Hugo
Publisher: Transportation Research Board
ISBN: 0309069742
Category : Accelerated life testing
Languages : en
Pages : 213
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 325: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes the findings from the various experimental activities associated with full-scale accelerated pavement testing programs.
Publisher: Transportation Research Board
ISBN: 0309069742
Category : Accelerated life testing
Languages : en
Pages : 213
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 325: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes the findings from the various experimental activities associated with full-scale accelerated pavement testing programs.
The Geology and Magnetite Deposits of Northern St. Louis County, Minnesota
Author: Clinton Raymond Stauffer
Publisher:
ISBN:
Category : Dolomite
Languages : en
Pages : 712
Book Description
Publisher:
ISBN:
Category : Dolomite
Languages : en
Pages : 712
Book Description
Gravel Roads
Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.