مقاله انگلیسی رایگان در مورد روکش آسفالت بتونی – الزویر 2019

 

مشخصات مقاله
ترجمه عنوان مقاله تجزیه و تحلیل میکرو مکانیکی روکش آسفالت بتونی با ضریب بالا
عنوان انگلیسی مقاله Micro-mechanical analysis of high modulus asphalt concrete pavement
انتشار مقاله سال 2019
تعداد صفحات مقاله انگلیسی 14 صفحه
هزینه دانلود مقاله انگلیسی رایگان میباشد.
پایگاه داده نشریه الزویر
نوع نگارش مقاله
مقاله پژوهشی (Research Article)
مقاله بیس این مقاله بیس نمیباشد
نمایه (index) Scopus – Master Journals List – JCR
نوع مقاله ISI
فرمت مقاله انگلیسی  PDF
ایمپکت فاکتور(IF)
4.686 در سال 2018
شاخص H_index 129 در سال 2019
شاخص SJR 1.522 در سال 2018
شناسه ISSN 0950-0618
شاخص Quartile (چارک) Q1 در سال 2018
مدل مفهومی ندارد
پرسشنامه ندارد
متغیر ندارد
رفرنس دارد
رشته های مرتبط مهندسی عمران
گرایش های مرتبط مهندسی راه و ترابری
نوع ارائه مقاله
ژورنال
مجله / کنفرانس مصالح ساختمانی و ساخت و ساز – Construction and Building Materials
دانشگاه  Institute of Transportation Environment and Safety Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China
کلمات کلیدی روکش آسفالت، تجزیه و تحلیل میکرو مکانیکی، روش عنصر گسسته، آسفالت بتونی با ضریب بالا
کلمات کلیدی انگلیسی Asphalt pavement، Micro-mechanical analysis، Discrete Element Method (DEM)، High Modulus Asphalt Concrete (HMAC
شناسه دیجیتال – doi
https://doi.org/10.1016/j.conbuildmat.2019.06.019
کد محصول  E12382
وضعیت ترجمه مقاله  ترجمه آماده این مقاله موجود نمیباشد. میتوانید از طریق دکمه پایین سفارش دهید.
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فهرست مطالب مقاله:
Abstract
1. Introduction
2. Determination of micro-parameters
3. Simulation of HMAC pavement and conventional asphalt pavement under static load
4. Conclusions
Declaration of Competing Interest
Acknowledgments
References

 

بخشی از متن مقاله:

Abstract

The objective of this study is to investigate the micro-mechanical characteristics of High Modulus Asphalt Concrete (HMAC) pavement structure under loads. The Discrete Element Method (DEM) was employed in this study to build the models for HMAC pavement and conventional asphalt pavement structures. The laboratory tests and DEM simulations of uniaxial compression tests were conducted on the materials of HMAC pavement structure layers. To simulate the mechanical behavior of the asphalt mixture, micro-parameters were adjusted to fit with the strain–stress curve results from lab-test. The displacement and stress distribution in vertical and horizontal directions, and the shear stress in the horizontal direction were analyzed for the HMAC pavement and conventional asphalt pavement. The results showed that the maximum vertical displacement of HMAC pavement (0.25–0.293 mm) was less than that of the conventional asphalt pavement (0.3–0.324 mm). The application of HMAC decreased the vertical stress in all structural layers except the upper surface layer. The HMAC decreased the horizontal stress in the subbase layer. Though the HMAC pavement had a slightly greater horizontal shear stress in the upper and middle surface layers than the conventional asphalt pavement, its shear resistance was. Therefore, the results indicated HMAC layer can enhance the resistance to deformation and reduce the rutting potential in asphalt pavement.

Introduction

High-modulus asphalt concrete (HMAC) was originated from France in 1980s to increase the rutting mitigation resistance and the stiffness of asphalt base layers [1]. Generally, there are three methods to obtained high modulus binders which contributes the most of the higher stiffness of HMAC: use hard-grade asphalt binders that have low penetration and high softening points [2]; use polymer modifier, such as SBS and lake asphalt [3–5]; use high-modulus agent [3,6,7]. HMAC shows evident higher stiffness when compared with conventional asphalt concrete. Pavements with HMAC base layers were reported to have good resistance to rutting and fatigue with the context of climate in France [7]. By applying HMAC, the thickness of the base layer can be greatly reduced while the performance remains the same. However, researchers still have great concerns on the mechanical performance of the HMAC in more inclement climate condition, especially its low temperature performance. Researchers from Spain carried out the repetitive loading axial tests at high temperature (40–45 C) and found the permanent deformation resistance of HMAC was highly related with the asphalt grade and voids contents [2,7].

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