Permeability and bleeding of asphalt concrete using mixture theory
TL;DR: In this paper, the assumption of constant permeability in the theory of consolidation by Terzaghi is relaxed and a linear relation is proposed between permeability and air voids, and Voids filled with asphalt (VFA) is proposed as a parameter to model bleeding of asphalt concrete, and its variation for different loading and mixture condition is studied.
About: This article is published in International Journal of Engineering Science.The article was published on 2001-04-01. It has received 53 citations till now. The article focuses on the topics: Asphalt concrete & Asphalt.
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TL;DR: The detrimental effects of water in asphalt mixtures and its manifestation as distresses in asphalt pavements were first recognised in the 1930s and have been studied extensively during the last 35 years as mentioned in this paper.
Abstract: The detrimental effects of water in asphalt mixtures and its manifestation as distresses in asphalt pavements were first recognised in the 1930s and have been studied extensively during the last 35 years. This deterioration process, referred to as moisture damage, is generally defined as the degradation of the mechanical properties of the material due to the presence of moisture in its microstructure. Moisture damage is a complex phenomenon that involves thermodynamic, chemical, physical and mechanical processes. This paper describes the processes by which moisture damage affects asphalt mixtures. A critique of various moisture damage mechanisms is presented, followed by a review of recent work on modes of moisture transport (i.e. water permeability, capillary rise and vapour diffusion) and their relationship to moisture damage. Special attention is given to the characterisation of void structures of asphalt mixtures, which is an important factor that influences moisture transport. Finally, the paper pres...
330 citations
Cites background from "Permeability and bleeding of asphal..."
...…cause moisture damage are analysis of the contribution of air voids distribution and connectivity (Masad et al. 2006c, 2007), moisture transport (Krishnan and Rao 2001, Chen et al. 2004, Kassem et al. 2006, Masad et al. 2006a) and physical characteristics of the material and aggregates–binder…...
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163 citations
TL;DR: In this paper, the authors investigated potential causes of in-place rutting and found that the major rutts are attributed to the decrease in thickness of middle and lower layers.
104 citations
TL;DR: In this article, a series of pore-structure models for a Cementitious permeable pavement (CPP) was examined through X-ray tomography (XRT) images.
92 citations
TL;DR: The results showed that at the environment temperature of 17oC the stability of the asphalt core samples decreased by 40.16% at 30oC after 1.5 h and 62.39% after 6h, and the ANN method could be used to model the MS.
Abstract: Research highlight? Marshall Stability (MS) of asphalt concrete under varying temperature and exposure times was modelled by using artificial neural network. In order to investigate the MS based on physical properties, exposure time and environment temperature, exposure times of 1.5, 3, 4.5 and 6 h and temperatures of 30oC, 40oC and 50oC were selected. At the environment temperature of 17oC the stability of the asphalt core samples decreased by 40.16 % at 30oC after 1.5 h and 62.39% after 6h. At 40oC, the decrease was 74.31% after 1.5h and 78.10 % after 6h. At 50oC the stability of the asphalt decreased by 83.22 % after 1.5h, and 88.66 % after 6h. Experiment results and ANN model exhibited good correlation, ANN method could be used to model the MS. In this study, the Marshall Stability (MS) of asphalt concrete under varying temperature and exposure times was modeled by using artificial neural network. In order to investigate the MS based on physical properties, exposure time and environment temperature, exposure times of 1.5, 3, 4.5 and 6h and temperatures of 30?C, 40?C and 50?C were selected. The results showed that at the environment temperature of 17?C the stability of the asphalt core samples decreased by 40.16% at 30?C after 1.5h and 62.39% after 6h. At 40?C, the decrease was 74.31% after 1.5 and 78.10% after 6h. At 50?C the stability of the asphalt decreased by 83.22% after 1.5h, and 88.66% after 6h. Experiment results and ANN model exhibited good correlation for this reason the ANN method could be used to model the MS.
80 citations
Cites background from "Permeability and bleeding of asphal..."
...…as segregation, high air void, the content not mixing adequately and not enough compaction temperature which are considered to be major contributors to early or premature distresses of asphalt pavement (Epps et al., 2000, 2002; Gardiner & Brown, 2000; Krishnan & Rao, 2001; Rauhut et al., 1994)....
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References
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Book•
01 Jan 1948
TL;DR: In this article, the authors present a survey of the properties of soils and their properties in terms of Hydraulics of Soils, Hydraulic and Mechanical Properties of Soil Exploration Hydraulic, Mechanical, and Hydraulic properties of soil.
Abstract: PHYSICAL PROPERTIES OF SOILS Index Properties of Soils Soil Exploration Hydraulic and Mechanical Properties of Soils THEORETICAL SOIL MECHANICS Hydraulics of Soils Plastic Equilibrium in Soils Settlement and Contact Pressure PROBLEMS OF DESIGN AND CONSTRUCTION Ground Improvement Earth Pressure and Stability of Slopes Foundations Settlement Due to Extraneous Causes Dams and Dam Foundations References Indexes
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01 Aug 1993
TL;DR: In this paper, the Mecanique des sols reference record was created on 2004-09-07, modified on 2016-08-08, and it was used for the Sols non satures reference record.
Abstract: Keywords: Mecanique des sols ; Sols non satures Reference Record created on 2004-09-07, modified on 2016-08-08
3,278 citations
Book•
01 Nov 1992
TL;DR: In this paper, the authors present the theory of pavement design and review the methods developed by several organizations, such as the American Association of State Highway and Transportation Officials (AASHTO), the Asphalt Institute (AI), and the Portland Cement Association (PCA).
Abstract: This is a textbook on the structural analysis and design of highway pavements. It presents the theory of pavement design and reviews the methods developed by several organizations, such as the American Association of State Highway and Transportation Officials (AASHTO), the Asphalt Institute (AI), and the Portland Cement Association (PCA). It can be used for an undergraduate course by skipping the appendices or as an advanced graduate course by including them. The book is organized in 13 chapters. Chapter 1 introduces the historical development of pavement design, the major road tests, the various design factors, and the differences in design concepts among highway pavements, airport pavements, and railroad trackbeds. Chapter 2 discusses stresses and strains in flexible pavements. Chapter 3 presents the KENLAYER computer program, based on Burmister's layered theory, including theoretical developments, program description, comparison with available solutions, and sensitivity analysis on the effect of various factors on pavement responses. Chapter 4 discusses stresses and deflections in rigid pavements due to curling, loading, and friction, as well as the design of dowels and joints. Influence charts for determining stresses and deflections are also presented. Chapter 5 presents the KENSLABS computer program, based on the finite element method, including theoretical developments, program description, comparison with available solutions, and sensitivity analysis. Chapter 6 discusses the concept of equivalent single-wheel and single-axle loads and the prediction of traffic. Chapter 7 describes the material characterization for mechanistic-empirical methods of pavement design including the determination of resilient modulus, fatigue and permanent deformation properties, and the modulus of subgrade reaction. Chapter 8 outlines the subdrainage design including general principles, drainage materials, and design procedures. Chapter 9 discusses pavement performance including distress, serviceability, skid resistance, nondestructive testing, and the evaluation of pavement performance. Chapter 10 illustrates the reliability concept of pavement design in which the variabilities of traffic, material, and geometric parameters are all taken into consideration. A probabilistic procedure, developed by Rosenblueth, is described and two probabilistic computer programs including VESYS for flexible pavements and PMRPD for rigid pavements are discussed. Chapter 11 outlines an idealistic mechanistic method of flexible pavement design and presents in detail the AI method and the AASHTO method, as well as the design of flexible pavement shoulders. Chapter 12 outlines an idealistic mechanistic method of rigid pavement design and presents in detail the PCA method and the AASHTO method. The design of continuous reinforced concrete pavements and rigid pavement shoulders is also included. Chapter 13 outlines the design of overlay on both flexible and rigid pavements including the AASHTO, AI, and PCA procedures. An Author Index and a Subject Index are provided.
2,667 citations
TL;DR: In this paper, the use of the thermodynamics of mixtures to formulate incompressible porous media models is discussed. But the model is restricted to the case where the mixture is a mixture where the solid and the fluid constituents are each incompressibly.
1,027 citations