Author: Terhi Kristiina PellinenPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 1606
Book Description
Investigation of the Use of Dynamic Modulus as an Indicator of Hot-mix Asphalt Performance
Author: Terhi Kristiina PellinenPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 1606
Book Description
Superpave Mix Design
Author: Asphalt InstitutePublisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
Dynamic Modulus of Hot Mix Asphalt
Author: Thomas BennertPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 84
Book Description
An Investigation Into Dynamic Modulus of Hot-mix Asphalt and Its Contributing Factors
Author: Europa
Author: Precision of the Dynamic Modulus and Flow Number Tests Conducted with the Asphalt Mixture Performance Tester
Author: Ramon Francis BonaquistPublisher: Transportation Research Board
ISBN: 0309213363
Category : Technology & Engineering
Languages : en
Pages : 211
Book Description
TRB’s National Cooperative Highway Research Program (NCHRP) Report 702: Precision of the Dynamic Modulus and Flow Number Tests Conducted with the Asphalt Mixture Performance Tester describes the development of precision statements for the dynamic modulus and flow number tests conducted with the Asphalt Mixture Performance Tester.
Framework for Development of Performance-related Specifications for Hot-mix Asphaltic Concrete
Author: David A. AndersonPublisher: Transportation Research Board
ISBN: 9780309048552
Category : Technology & Engineering
Languages : en
Pages : 132
Book Description
Determination of the In-place Hot-mix Asphalt Layer Modulus for Rehabilitation Projects Using a Mechanistic-empirical Procedure
Author: Amara LouliziPublisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 32
Book Description
This project evaluated the procedures proposed by the Mechanistic-Empirical Pavement Design Guide (MEPDG) to characterize existing hot-mix asphalt (HMA) layers for rehabilitation purposes. Thirty-three cores were extracted from nine sites in Virginia to measure their dynamic moduli in the lab. Falling-weight deflectometer (FWD) testing was performed at the sites because the backcalculated moduli are needed for the Level 1 procedure. The resilient modulus was also measured in the lab because it is needed for the Level 2 procedure. A visual pavement rating was performed based on pavement condition because it is needed for the Level 3 procedure. The selected cores were tested for their bulk densities (Gmb) using the AASHTO T166 procedure and then for their dynamic modulus in accordance with the AASHTO TP62-03 standard test method. Then the cores were broken down and tested for their maximum theoretical specific gravity (Gmm) using the AASHTO T-209 procedure. Finally an ignition test was performed to find the percentage of binder and to reclaim the aggregate for gradation analysis. Volumetric properties were then calculated and used as input for the Witczak dynamic modulus prediction equations to find what the MEPDG calls the undamaged master curve of the HMA layer. The FWD data, resilient modulus data, and pavement rating were used to find the damaged master curve of the HMA layer as suggested for input Levels 1, 2, and 3, respectively. It was found that the resilient modulus data needed for a Level 2 type of analysis do not represent the entire HMA layer thickness, and therefore it was recommended that this analysis should not be performed by VDOT when implementing the design guide. The use of Level 1 data is recommended because FWD testing appears to be the only procedure investigated that can measure the overall condition of the entire HMA layer.
Performance Tests for Hot Mix Asphalt (HMA) Including Fundamental and Empirical Procedures
Author: Louay Nadhim MohammadPublisher: ASTM International
ISBN: 0803134959
Category : Anisotropy
Languages : en
Pages : 216
Book Description
Determination of Dynamic Moduli in Uniaxial Compression for North Carolina Hot Mix Asphalt Concrete
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This thesis presents results from an experimental study on the dynamic modulus testing of hot mix asphalts (HMAs) commonly used in North Carolina in uniaxial compression mode. Forty two mixtures with varying aggregate sources, aggregate gradations, asphalt sources, asphalt grades, and asphalt contents are included in this study. With the dynamic modulus database developed, several issues are investigated in this research. Effects of confining pressure on the dynamic modulus are evaluated by comparing results from uniaxial and triaxial compression tests. A modified dynamic modulus test protocol is developed by reducing the required testing time using more frequencies and fewer temperatures based on the time-temperature superposition principle. Hirsch and Witczak predictive models are evaluated. During this analysis a case study was conducted to determine how much pavement performance changes due to the predictive errors. Finally, effects of different mixture variables on dynamic modulus of asphalt concrete are evaluated.