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Impact Of Aggregate Gradation And Type On Asphalt Mixture Characteristics
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Book Synopsis Impact of Aggregate Gradation and Type on Asphalt Mixture Characteristics by : Darren Glenn Hazlett
Download or read book Impact of Aggregate Gradation and Type on Asphalt Mixture Characteristics written by Darren Glenn Hazlett and published by . This book was released on 1990 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the impact of aggregate gradation and type on Hot Mix Asphaltic Concrete (HMAC) characteristics. Several different, but related topics are covered and results from several experiments are presented. An overview of HMAC is presented, covering factors affecting mixture characteristics and performance in addition to a review of the literature relating to aggregate gradation and type. The results of a study of construction data from the Texas State Department of Highways and Public Transportation (SDHPT) are presented. Two laboratory studies were conducted relating to asphalt content, aggregate gradation and aggregate type. The summarized results and interpretations of these results are included. The economic impact of specifications changes currently proposed by the SDHPT to improve HMAC quality is addressed. Finally, conclusions and recommendations are drawn based on all preceding material.
Book Synopsis Effects of Aggregates and Mineral Fillers on Asphalt Mixture Performance by : Richard C. Meininger
Download or read book Effects of Aggregates and Mineral Fillers on Asphalt Mixture Performance written by Richard C. Meininger and published by ASTM International. This book was released on 1992 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resulting from the Symposium on [title], held in December 1991, at the ASTM Standardization Meetings in San Diego, this volume comprises 19 papers in four sections: aggregates; mineral fillers; mixture evaluation; and fatigue, modeling, and theoretical. Member price, $52. Annotation copyright Book N
Book Synopsis Effect of Aggregate Gradation on Performance Characteristics of Hot Mix Asphalt by : Dan Ridolfi
Download or read book Effect of Aggregate Gradation on Performance Characteristics of Hot Mix Asphalt written by Dan Ridolfi and published by . This book was released on 1998 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superpave Mix Design by : Asphalt Institute
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Manual for Design of Hot Mix Asphalt with Commentary by :
Download or read book A Manual for Design of Hot Mix Asphalt with Commentary written by and published by Transportation Research Board. This book was released on 2011 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures by : Akhtarhusein Asgarali Tayebali
Download or read book Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures written by Akhtarhusein Asgarali Tayebali and published by . This book was released on 1990 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aggregate Properties and the Performance of Superpave-designed Hot Mix Asphalt by : Brian D. Prowell
Download or read book Aggregate Properties and the Performance of Superpave-designed Hot Mix Asphalt written by Brian D. Prowell and published by Transportation Research Board. This book was released on 2005 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stone Matrix Asphalt by : Krzysztof Blazejowski
Download or read book Stone Matrix Asphalt written by Krzysztof Blazejowski and published by CRC Press. This book was released on 2016-04-19 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the years since the development and subsequent success of Stone Matrix Asphalt (SMA), a plethora of articles have emerged, scattered throughout various publications. The time is right for a comprehensive resource that collects, examines, and organizes this information and makes it easily accessible. A compilation and distillation of the latest k
Book Synopsis Aggregate Contribution to Hot Mix Asphalt (HMA) Performance by :
Download or read book Aggregate Contribution to Hot Mix Asphalt (HMA) Performance written by and published by ASTM International. This book was released on with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Aggregate Type and Gradation on Critical Voids in the Mineral Aggregate in Asphalt Paving Mixtures by : Walter Phelon Hislop
Download or read book Influence of Aggregate Type and Gradation on Critical Voids in the Mineral Aggregate in Asphalt Paving Mixtures written by Walter Phelon Hislop and published by . This book was released on 2000 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laboratory testing involved triaxial testing with the Nottingham Asphalt Tester of 36 mixes with different aggregate properties. ANOVA and linear regression was used to examine the effects of identified aggregate factors on critical state transitions in asphalt paving mixtures and to develop predictive equations. The results clearly demonstrate that the volumetric conditions of an asphalt mixture at the stable/unstable threshold are influenced by a composite measure of the maximum aggregate size and gradation and by aggregate shape and texture. The currently defined VMA criterion, while significant, is seen to be insufficient, by itself, to correctly differentiate sound from unsound mixtures. Based on the laboratory data and statistical analysis, a new paradigm to volumetric mix design is proposed that explicitly accounts for several aggregate factors (gradation, shape, and texture) in predicting the critical VMA of an asphalt paving mixture.
Book Synopsis Laboratory Evaluation of Friction Loss and Compactability of Asphalt Mixtures by :
Download or read book Laboratory Evaluation of Friction Loss and Compactability of Asphalt Mixtures written by and published by . This book was released on 2012 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study aimed to develop prediction models for friction loss and laboratory compaction of asphalt mixtures. In addition, the study evaluated the effect of compaction level and compaction method on skid resistance and the internal structure of asphalt mixtures. The predictive model for friction loss was developed based on parameters that describe aggregate texture and angularity before and after polishing, aggregate gradation, and polishing cycles in the laboratory. Squared-shape slabs of asphalt mixtures were prepared in the laboratory using a linear kneading compactor and polished using a wheel-polishing device. The frictional characteristics were measured after different intervals of polishing cycles. Mixtures with coarser aggregate gradation were found to have better skid resistance than those with fine aggregate gradation. The friction loss model was found to correlate very well with the experimental measurements. The predictive model for laboratory compaction of asphalt mixtures was developed based on parameters that describe aggregate shape characteristics, aggregate gradation, binder content, and binder properties at compaction temperatures. The researchers executed intensive laboratory experiments to quantify the effect of these parameters on the compaction of asphalt mixture in the laboratory. Two models that describe slope and intercept of the laboratory compaction curves of asphalt mixtures were developed. These models showed strong correlations between the predicted values and the measured ones. These models provide essential inputs to quantify the compaction effort needed to compact asphalt mixtures. In the last phase of this study, the researchers evaluated the effect of compaction level and compaction method on skid resistance and internal structure of asphalt pavements. The vibratory roller was found to yield a smoother surface than the static roller. In addition, the results confirmed that the vibratory roller was more effective in reducing the air voids than the static roller. Moreover, the test sections compacted using the vibratory roller had more uniform air void distribution compared to the test sections compacted using the static roller.
Book Synopsis Interfacial Transition Zone in Concrete by : J.C. Maso
Download or read book Interfacial Transition Zone in Concrete written by J.C. Maso and published by CRC Press. This book was released on 2004-03-01 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important new state-of-the-art report prepared by RILEM Technical Committee 108 ICC. It has been written by a team of leading international experts from the UK, USA, Canada, Israel, Germany, Denmark, South Africa, Italy and France. Research studies over recent years in the field of cement science have focused on the behaviour of the interfaces between the components of cement-based materials. The techniques used in other areas of materials science are being applied to the complex materials found in cements and concretes, and this book provides a significant survey of the present state of the art.
Book Synopsis Effects of Aggregate Gradation and Binder Content on Asphalt Concrete Properties by : Mohammed Mousad El-Basyouny
Download or read book Effects of Aggregate Gradation and Binder Content on Asphalt Concrete Properties written by Mohammed Mousad El-Basyouny and published by . This book was released on 1998 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Discrete Element Modeling of Influences of Aggregate Gradation and Aggregate Properties on Fracture in Asphalt Mixes by : Enad Muhib Ahmad Mahmoud
Download or read book Discrete Element Modeling of Influences of Aggregate Gradation and Aggregate Properties on Fracture in Asphalt Mixes written by Enad Muhib Ahmad Mahmoud and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Aggregate strength, gradation, and shape play a vital role in controlling asphalt mixture performance. Many studies have demonstrated the effects of these factors on asphalt mixture performance in terms of resistance to fatigue cracking and rutting. This study introduces numerical and analytical approaches supported with imaging techniques for studying the interrelated effects of aggregate strength, gradation, and shape on resistance of asphalt mixtures to fracture. The numerical approach relies on the discrete element method (DEM). The main advantage of this approach is the ability to account for the interaction between the internal structure distribution and aggregate properties in the analysis of asphalt mixture response and performance. The analytical approach combines aggregate strength variability and internal force distribution in an asphalt mixture to predict the probability of aggregate fracture. The numerical and analytical approaches were calibrated and verified using laboratory tests on various aggregate types and mixtures. Consequently these approaches were used to: (1) determine the resistance of various mixture types with different aggregate properties to fracture, (2) study the effects of aggregate strength variability on fracture, (3) quantify the influence of blending different types of aggregate on mixture strength, (4) develop a mathematical expression for calculating the probability of aggregate fracture within asphalt mixture, and (5) relate cracking patterns (cohesive: aggregate - aggregate and matrix - matrix, and adhesive: aggregate - matrix) in an asphalt mixture to internal structure distribution and aggregate properties. The results of this dissertation established numerical and analytical techniques that are useful for developing a virtual testing environment of asphalt mixtures. Such a virtual testing environment would be capable of relating the microscopic response of asphalt mixtures to the properties of the mixture constituents and internal structure distribution. The virtual testing environment would be an inexpensive mean to evaluate the influence of changing different material and design factors on the mixture response.
Book Synopsis Influence of Aggregate Morphology and Grading on the Performance of 9.5-mm Stone Matrix Asphalt Mixtures by : Yufeng Liu
Download or read book Influence of Aggregate Morphology and Grading on the Performance of 9.5-mm Stone Matrix Asphalt Mixtures written by Yufeng Liu and published by . This book was released on 2019 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stone matrix asphalt (SMA) is a gap-graded hot mix asphalt with a high percentage of coarse aggregate and a high asphalt content. SMA is the typical gap-graded mixture used in Virginia that is intended to maximize rutting resistance and durability with a stable stone-on-stone skeleton held together by a rich mixture of asphalt binder. The field performance of SMA in Virginia has been generally excellent. However, several SMA pavements have undergone premature failure, and factors related to both pavement structure and materials have been identified as causes for the poor performance. A detailed forensic study recommended a specification change for gradation of SMA-9.5 mixtures to provide improved stability. The Virginia Department of Transportation adopted a new aggregate gradation in 2012 for these mixtures. Aggregate morphological characteristics, including sphericity, flatness ratio, elongation ratio, angularity, and texture, have been recognized as major factors influencing the performance of aggregate and asphalt mixtures. The current study demonstrated via laboratory methods the stability of mixtures conforming to the Virginia Department of Transportation’s new grading specification and the effects of aggregate morphology and asphalt binder properties on stability. SMA mixtures designed and produced by different contractors using aggregates from different quarries in Virginia were included in the study. SMA mixtures and samples of the aggregates used in production were obtained for laboratory evaluation of the structural stability and aggregate characteristics of the mixtures. All mixtures met the criterion of VCAMIX
Download or read book Hot-mix Asphalt Mixtures written by and published by . This book was released on 1999 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tests on an Absorptive Aggregate to Study Effect of Absorption and Gradation on Voids in Compacted Bituminous Paving Mix by : Waterways Experiment Station (U.S.)
Download or read book Tests on an Absorptive Aggregate to Study Effect of Absorption and Gradation on Voids in Compacted Bituminous Paving Mix written by Waterways Experiment Station (U.S.) and published by . This book was released on 1955 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
