Low Temperature Investigations On Asphalt Binder Performance

DOWNLOAD

Download Low Temperature Investigations On Asphalt Binder Performance PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Low Temperature Investigations On Asphalt Binder Performance book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Low Temperature Investigations On Asphalt Binder Performance

DOWNLOAD
Author : Oluranti Paul Togunde
language : en
Publisher:
Release Date : 2008

Low Temperature Investigations On Asphalt Binder Performance written by Oluranti Paul Togunde and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

This thesis investigates and documents fundamental studies of highway materials (asphalt engineering properties) especially on different modified asphalt binders and mixtures in order to understand failure mechanisms at low temperature and superior performance of such asphalt binders with the aim of preventing premature cracking on Ontario highways. In addition, seven asphalt binders of different compositions were used as a template for study and this research work is tailored towards Superpave® performance-based specification testing with the aim of improving asphalt pavement performance under various conditions and consequently reducing premature cracking in order to achieve long lasting highways. Based on the actual applied pattern of Superpave® specification criteria, the mechanical responses of the binders are analyzed by extended bending beam rheometer (eBBR), tensile stress ductilometer (Petrotest DDA3®), compact tension test (Instron AsphaltPro®), double-edge-notched tension and single-edge-notched tension (MTS 810 universal testing machine) protocols. The objective of this study entails establishing and developing of a proper procedure for the testing of binders with the aim of ranking (grading) the performance after validation of laboratory and field experiments. Analysis of the results appears to show that the premature distress on the Highway 417 trial sections can be attributed to reversible aging tendency (wax crystallization) at low temperatures coupled with low fatigue resistance of the binders. The results suggest that different polymer modifications had significant influence on the performance of asphalt mix as demonstrated from the results obtained from essential and plastic work of fracture using double-edge-notch-tension test (DENT). Crack tip opening displacement (CTOD) parameter consistently show the performing grading of asphalt binder while compact tension test protocol provides plane strain fracture toughness (K1c) which could be used to rank binders with respect to fracture resistance at low temperature. Hence, CTOD is a promising parameter which can be used to establish performance ranking of the binders.

Investigation Of The Effect Of Oil Modification On Asphalt Binders

DOWNLOAD
Author : Amir Golalipour
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-07-21

Investigation Of The Effect Of Oil Modification On Asphalt Binders written by Amir Golalipour and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-21 with categories.

Thermally induced cracking of asphalt pavement continues to be a serious issue in cold climate regions as well as in areas which experience extreme daily temperature differentials. Low temperature cracking of asphalt pavements is attributed to thermal stresses and strains developed during cooling cycles. Improving asphalt binder low temperature fracture and stiffness properties continues to be a subject of particular concern. Therefore, significant amount of research has been focused on improving asphalt binder properties through modification. In recent years, wide ranges of oil based modifications have been introduced to improve asphalt binder performance, especially at the low service temperatures. Although, significant use of these oils is seen in practice, knowledge of the fundamental mechanisms of oil modification and their properties for achieving optimum characteristics is limited. Hence, this study focuses on better understanding of the effect of oil modifiers which would help better material selection and achieve optimum performance in terms of increasing the life span of pavements.

Evaluation Of Indirect Tensile Test Idt Procedures For Low Temperature Performance Of Hot Mix Asphalt

DOWNLOAD
Author : Donald W. Christensen
language : en
Publisher: Transportation Research Board
Release Date : 2004

Evaluation Of Indirect Tensile Test Idt Procedures For Low Temperature Performance Of Hot Mix Asphalt written by Donald W. Christensen and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Pavements, Asphalt categories.

Introduction and Research Approach -- Findings -- Interpretation, Appraisal, and Applications -- Conclusions and Recommendations -- References -- Appendixes.

The Investigation Of The Low Temperature Behavior Of An Asphalt Binder By Means Of The Shrp Direct Tension Test

DOWNLOAD
Author : Chi Chiu Desmond Fung (University of Manitoba student)
language : en
Publisher:
Release Date : 1998

The Investigation Of The Low Temperature Behavior Of An Asphalt Binder By Means Of The Shrp Direct Tension Test written by Chi Chiu Desmond Fung (University of Manitoba student) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

Investigation Of Modified Asphalt Performance Using Shrp Binder Specification

DOWNLOAD
Author : Hussain U. Bahia
language : en
Publisher:
Release Date : 1997

Investigation Of Modified Asphalt Performance Using Shrp Binder Specification written by Hussain U. Bahia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Pavements, Asphalt concrete categories.

Investigation Of Low Temperature Thermal Cracking In Hot Mix Asphalt

DOWNLOAD
Author : Timothy Aschenbrener
language : en
Publisher:
Release Date : 1995

Investigation Of Low Temperature Thermal Cracking In Hot Mix Asphalt written by Timothy Aschenbrener and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Pavements, Asphalt concrete categories.

A study was performed to determine the influence of material properties on the thermal cracking performance of hot mix asphalt (HMA), and to determine the ability to predict thermal cracking from pavements of known field performance. The testing device used to measure the HMA properties was the thermal-stress, restrained-specimen test (TSRST), and the device used to measure the binder properties was the bending beam rheometer (BBR). The laboratory study was conducted to determine the variability of test results as an influence of 1) asphalt cement stiffness, 2) asphalt cement quantity, 3) mixes with various aggregate qualities, 4) aging, and 5) the presence of hydrated lime. The influence of the asphalt cement stiffness was the single largest factor that controlled the test results.

Investigation Of The Effect Of Oil Modification On Critical Characteristics Of Asphalt Binders

DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2013

Investigation Of The Effect Of Oil Modification On Critical Characteristics Of Asphalt Binders written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Thermally induced cracking of asphalt pavement continues to be a serious issue in cold climate regions as well as in areas which experience extreme daily temperature differentials. Low temperature cracking of asphalt pavements is attributed to thermal stresses and strains developed during cooling cycles. Improving asphalt binder low temperature fracture and stiffness properties continues to be a subject of particular concern. Therefore, significant amount of research has been focused on improving asphalt binder properties through modification. In recent years, wide ranges of oil based modifications have been introduced to improve asphalt binder performance, especially at the low service temperatures. Although, significant use of these oils is seen in practice, knowledge of the fundamental mechanisms of oil modification and their properties for achieving optimum characteristics is limited. Hence, this study focuses on better understanding of the effect of oil modifiers which would help better material selection and achieve optimum performance in terms of increasing the life span of pavements. In this study, the effect of oil modification on the rheological properties of the asphalt binder is investigated. To examine the effect of oil modification on binder characteristics, low temperature properties as well as high temperature performance of oil modified binders were evaluated. It is found that oils vary in their effects on asphalt binder performance. However, for all oils used in the study, adding an oil to binder can improve binder low temperature performance, and this result mainly attributed to the softening effect. In addition to that, a simple linear model is proposed to predict the performance grade of oil modified binder based on the properties of its constituents at high and low temperatures. Another part of this study focuses on the oil modification effect on asphalt binder thermal strain and stresses. A viscoelastic analytical procedure is combined with experimentally derived failure stress and strain envelopes to determine the controlling failure mechanism, strain tolerance or critical stress, in thermal cracking of oil modified binders. The low temperature failure results depict that oil modification has a good potential of improving the cracking resistance of asphalt binders during thermal cycles.

Laboratory Investigation Of Low Temperature Performance Of Asphalt Mixtures

DOWNLOAD
Author : Moses Akentuna
language : en
Publisher:
Release Date : 2017

Laboratory Investigation Of Low Temperature Performance Of Asphalt Mixtures written by Moses Akentuna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Binders (Materials) categories.

Low Temperature Testing Of Ontario Hot Mix Asphalt And Rheological Testing Of Recovered Binder

DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2015

Low Temperature Testing Of Ontario Hot Mix Asphalt And Rheological Testing Of Recovered Binder written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

This thesis discusses and documents findings from an investigation of low temperature testing of asphalt mixes and rheological testing of binders. A number of asphalt mixes from the different Ontario Ministry of Transportation (MTO) and the City of Kingston construction contracts were investigated for their compliance with conventional Superpave® test methods such as indirect tensile test (IDT), dynamic shear rheometer (DSR) and bending beam rheometer (BBR) as well as additional specification tests such as extended BBR and double-edge-notched tension (DENT) test. To investigate the presence of polymer additives and waste engine oil in the binder X-ray fluorescence (XRF) and infrared spectroscopy (IR) tests were conducted. The American Association of State Highway and Transportation Official's Mechanistic-Empirical Pavement Design Guide (AASHTO MEPDG) software was used to predict long term low temperature performance of the mixtures in various regions of Ontario. The quality and durability of the binders recovered from some mixes were determined. Quality means the capacity of asphalt binder to reach a set of specific properties whereas durability is the measure of how well the asphalt resists change from its original characteristics when exposed to normal weathering and aging. Tested contracts from the City of Kingston showed grade excesses when stored isothermally for three days at low temperatures according to Ontario's extended bending beam rheometer (BBR) protocol (LS-308) whereas most of the MTO contracts showed grade deficits. Few of the studied recovered asphalt samples showed deficient strain tolerance as measured in Ontario's double-edge-notched tension (DENT) test (LS-299). The City of Kingston samples showed predicted times to failure from 9 to 15 years or greater whereas most MTO samples resulted in predicted times to failure of 1 to 5 years. X-ray fluorescence and Fourier transform infrared spectroscopy (FTIR) indicated that most of the samples designed according to MTO specifications included waste engine oil and/or oxidized residues, both shown to reduce the performance of asphalt.

Investigation Of Low Temperature Cracking In Asphalt Pavements

DOWNLOAD
Author : Mihai O. Marasteanu
language : en
Publisher:
Release Date : 2007

Investigation Of Low Temperature Cracking In Asphalt Pavements written by Mihai O. Marasteanu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Pavements, Asphalt categories.

Good fracture properties are an essential requirement for asphalt pavements built in the northern part of the US and in Canada for which the predominant failure mode is cracking due to high thermal stresses that develop at low temperatures. Currently, there is no agreement with respect to what experimental methods and analyses approaches to use to investigate the fracture resistance of asphalt materials and the fracture performance of asphalt pavements. This report presents a comprehensive research effort in which both traditional and new experimental protocols and analyses were applied to a statistically designed set of laboratory prepared specimens and to field samples from pavements with well documented performance to determine the best combination of experimental work and analyses to improve the low temperature fracture resistance of asphalt pavements. The two sets of materials were evaluated using current testing protocols, such as creep and strength for asphalt binders and mixtures as well as newly developed testing protocols, such as the disk compact tension test, single edge notched beam test, and semi circular bend test. Dilatometric measurements were performed on both asphalt binders and mixtures to determine the coefficient of thermal contraction. Discrete fracture and damage tools were utilized to model crack initiation and propagation in pavement systems using the finite element method and TCMODEL was used with the experimental data from the field samples to predict performance and compare it to the field performance data.