نتایج جستجو برای: desert pavement

تعداد نتایج: 22086  

2012
Guoqing Zhou

A pavement management system (PMS) is a valuable tool and one of the critical elements of the highway transportation infrastructure. Since a vast amount of pavement data is frequently and continuously being collected, updated, and exchanged due to rapidly deteriorating road conditions, increased traffic loads, and shrinking funds, resulting in the rapid accumulation of a large pavement database...

2004
L.J.M. Houben J. van der Kooij

This paper describes the Accelerated Testing with the LINTRACK-facility of the innovative ‘Rollpave’ test pavement that was developed within the theme ‘Modular Pavement Structures’ of the project ‘Roads for the Future’ of the Dutch Ministry of Transport, Public Works and Water Management. The concept of ‘Rollpave’ is a thin pre-manufactured asphalt wearing course that is rolled on a reel. On si...

2014
Suhana Koting Mohamed Rehan Karim Hilmi Mahmud Nuha S Mashaan Mohd Rasdan Ibrahim Herdayati Katman Nadiah Md Husain

Semi-flexible pavement surfacing is a composite pavement that utilizes the porous pavement structure of the flexible bituminous pavement, which is subsequently grouted with appropriate cementitious materials. This study aims to investigate the compressive strength, flexural strength, and workability performance of cementitious grout. The grout mixtures are designed to achieve high strength and ...

2002

As every driver knows, when pavement deteriorates, it becomes rougher. What drivers may not realize is that the roughness they feel in the seat of their vehicles not only makes the drive less comfortable, but it also leads to a cycle of increasing deterioration rates with increasing roughness severity. To prevent this cycle of everincreasing roughness and deter iorat ion, engineers try to perfo...

2014
Seyed Ali Sahhaf Shahriar Rahimi

The surface layer of road pavement has a particular importance in relation to the satisfaction of the primary demands of locomotion, such as security and eco-compatibility. In order to reduce road maintenance and rehabilitation costs and optimize the service condition of road networks, pavement management systems (PMS) need reliable and detailed data on the status of the highway network. Laser ...

2000
Hussein Mohamed Mostafa Nofal

Municipal engineers are faced with the difficult task of managing the urban roadway network. Maintaining this significantly large and expensive infrastructure requires effective planning and design. However, the majority of currently available design tools were developed originally for analyzing highway pavements. Little attention has been given in the past to urban road related issues. The env...

2009
Jia-Ruey Chang Yung-Shuen Su Tsun-Cheng Huang Shih-Chung Kang Shang-Hsien Hsieh

In this paper, we test whether an autonomous robot can be used to measure the International Roughness Index (IRI), a description of pavement ride quality in terms of its longitudinal profile. A ready-made robot, the Pioneer P3-AT, was equipped with odometers, a laptop computer, CCD laser, and a SICK laser ranger finder to autonomously perform the collection of longitudinal profiles. ProVAL (Pro...

2017
Sunghwan Kim Halil Ceylan Kasthurirangan Gopalakrishnan

In support of the initiatives for implementing the new MechanisticEmpirical Pavement Design Guide (MEPDG) in Iowa, a preliminary sensitivity study was undertaken to assess the comparative effect of design input parameters pertaining to material properties, traffic and climate on performance of two existing flexible pavements in Iowa with relatively thick Asphalt Concrete (AC) layers. A total of...

Journal: :journal of rehabilitation in civil engineering 2015
golamali shafabakhsh hossein naderpour reza noroozi

spending costs in construction of road pavements has turned this subject into one of the significant points in transportation infrastructure of countries. concrete slabs consider as a paving method with ability of reducing the rehabilitation needs. therefore, to manage costs and optimize the thickness of concrete pavements, recognizing the amount of determinative factors’ influence will be requ...

Journal: :Central European journal of public health 2015
Zuzana Derflerová Brázdová Helena Klimusová Dalibor Hruška Alice Prokopová Aleš Burjanek Krauff Rainer Schwanhaeuser Wulff

BACKGROUND Research on physical activity in relation to obesity gradually becomes more focused on environmental determinants, which can potentially influence people's health choices. The present article addresses the topic of physical activity from a wider sociological perspective. Our pilot study was designed with the objective of testing the applicability of a method included in the EC 6th Fr...

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