Performance-related Tests of Aggregates for Use in Unbound Pavement Layers PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 55
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 55
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Book Description
Author: Athar Saeed
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 68
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Book Description
Author: Athar Saeed
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 68
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Book Description
Explores performance-related procedures to test and select recycled hot-mix asphalt and portland cement concrete materials for use in unbound layers of highway pavements. Appendixes A through C of NCHRP Report 598, which cover the literature review and background information, new aggregate tests, and surface dielectric measurements, were published as NCHRP Web-Only Document 119.
Author: Athar Saeed
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages :
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Book Description
This document contains appendixes A through C of NCHRP Report 598, "Performance-Related Tests of Recycled Aggregates for Use in Unbound Pavement Layers." The appendixes cover the literature review and background information, new aggregate tests, and surface dielectric measurements associated with NCHRP Report 598.
Author: G. Ranjan
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 178
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Book Description
Author: R.H. Jones
Publisher: Butterworth-Heinemann
ISBN: 1483163210
Category : Technology & Engineering
Languages : en
Pages : 437
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Book Description
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.
Author: Athar Saeed
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 106
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Book Description
Transportation Research Record 1547 contains the following papers: Analysis of resilient modulus of dense- and open-graded aggregates; Influence of aggregate properties on performance of heavy-duty hot-mix asphalt pavements; Aggregate characteristics governing performance of seal coat highway overlays; Evaluation of laboratory procedures for aggregate polish test; Coarse aggregate effects on elastic moduli of concrete; Evaluation of frost resistance tests for carbonate aggregates; Testing methodology for resilient modulus of base materials; Evaluation of pavement bearing characteristics using Florida limerock bearing ratio test; Steady-state strength, relative density, and fines content relationship for sands; Influences on permanent deformation behavior of unbound granular materials; Effect of aging on freshly deposited or densified calcareous sands; Shakedown of subgrade soil under repeated loading; Lincoln Avenue reclaimed asphalt pavement base project; Use of shredded rubber in unbound granular flexible pavement layers.
Author: E. Tutumluer
Publisher:
ISBN:
Category : Aggregates (Building materials)
Languages : en
Pages : 180
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 445: Practices for Unbound Aggregate Pavement Layers consolidates information on the state-of-the-art and state-of-the-practice of designing and constructing unbound aggregate pavement layers. The report summarizes effective practices related to material selection, design, and construction of unbound aggregate layers to potentially improve pavement performance and longevity."--Publisher website.
Author: Athar Saeed
Publisher:
ISBN:
Category : Aggregate base
Languages : en
Pages : 16
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Book Description
This paper provides recommendations for performance-related tests to select recycled materials to be used in pavement foundations (base/sub-base layers). The test protocol presented in this paper will help transportation agencies, pavement design engineers and construction industry professionals to mechanistically evaluate and select sources of recycled hot-mix asphalt and portland cement concrete materials and identify factors that contribute most to the longevity of layers using recycled pavement materials. Extensive literature review was conducted on the aggregate specifications in the United States and other countries to identify the protocols used to evaluate the suitability of virgin and recycled aggregates in base and sub-base layers. The test procedures, typically designed for virgin aggregates, were modified to account for the recycled materials in the aggregate mix. The test procedures were further evaluated on the basis of mechanical performance, accuracy, practicality, complexity, precision, and test cost. The performance of the developed aggregate evaluation systems was determined through testing and analysis of 12 aggregates with different lithology and known field performance history. These samples were selected from seven states with different seasonal frost cycles. The performance tests were conducted and modifications were made to the tests procedures to better understand the mechanical behavior of aggregate systems with recycled materials. This study revealed that shear strength, toughness, abrasion, durability, and frost susceptibility influence the performance of the unbound aggregate layers. Statistical analysis of the data showed that shear strength of the aggregate systems has the most impact on the performance of the unbound systems consisted of recycled materials.
