João Virgílio Merighi's scientific contributions

Publications (21)

Article
In tropical region, in upper layers, soils having red or yellow coloration are generally found and are denominated lateritic soils. They are rich in aluminum hydroxides and ferric hydrates that give an elevated mechanic resistance. When the lateritic soils are used as a construction material in the structural pavement, the exceptional mechanical ch...
Article
Full-text available
In tropical region, in upper layers, soils having red or yellow coloration are generally found and are denominated lateritic soils. They are rich in aluminum hydroxides and ferric hydrates that give an elevated mechanic resistance. When the lateritic soils are used as a construction material in the structural pavement, the exceptional mechanical ch...
Article
Full-text available
The basic aim in this work is to present a new technique to analyze the contact surfaces developed by the contact between the tires and the structural pavements by numerical simulations, using 3D finite element formulations with contact mechanics. For this purpose, the Augmented Lagrangian method is used. This study is performed just putting the ti...
Article
Full-text available
The basic aim of this work is to present a new technique to analyze the contact surfaces developed by the contact between the tires and the structural pavements by numerical simulations using 3D finite element formulations with contact mechanics. For these propose the Augmented Lagrangian method is used. This study is performed just putting the tir...
Article
Full-text available
The basic aim of this work is to solve pavement structures by numerical simulations using a new technique to analyze them applying 3D finite element formulations with contact mechanics. For these propose the Augmented Lagrangian method is used (8). This study is performed just placing two tires on the pavement structure, see Figure 1. These tires a...
Article
The basic aim of this work is to present a numerical model to analyses 3D structural pavements using finite elements procedures with contact mechanics techniques. This study is performed just putting two tires on the structural pavement with several soil layers. These tires and the structural pavement are discretized by finite elements under large...
Article
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Porous concrete or pervious concrete consists of no-fines, open-graded Portland concrete mixture usually with 15–25% voids, which enables water to be drained quickly. In the literature, porous concrete is cited as a material typically used in low-traffic areas such as residential streets, parking lots, sidewalks, recreation trails, plazas, and othe...
Article
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The study of the asphalt mixtures when well made can reduce the appearance of the permanent deformation substantially, mainly in tropical regions where the temperatures in the pavement can exceed 60 ºC during 8 months of the year. The literature has presented studies using procedures that involve equipment whose price is very beyond the available f...
Article
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The porous concrete is used as an overlay layer of Portland cement concrete pavements as a surface layer. The elevated void content associated with a crushed stone makes possible the formation of good macro texture and consequently good frictional characteristics and the drainage of water that occurs between the tire and the pavement interface. The...
Article
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In the studies of asphalt mix performance, test tracks offer the advantage of full-scale accelerated loading, which is undoubtedly very close to field conditions. Their construction and operating costs, however, render them unworkable in the daily practice of engineering in many countries. On the other hand, the study of loading pressure on the pav...
Article
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The skid resistance of any surface is an important characteristic for the driving safety point of view. The rain affects the traffic security, because there are splash and sprays effects caused by the truck wheel. This fact contributes to the dynamic hydroplaning effect. In recent years many agencies research's has been studied the porous concrete...
Article
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In recent years the major performance problem found with dense graded asphalt mixture used in all bus lanes in São Paulo City is permanent deformation. The damage is accelerated by the low speed of the buses, which average around 25 km/h, and the high temperatures during eight months of the year. For these reasons, it is common to find premature ru...
Article
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A sustainable development promotion involves the use of the environmental resources, without harming them for later utilization by the future generations, and also the choice of offering an appropriated development. Therefore, this article focuses the housing production, to consider any development, as the related building materials and techniques...
Article
Despite the enormous amount of tests dedicated to pavement rehabilitation in Brazil every year, the pavement field's ability to predict the performance of different rehabilitation techniques remains very limited yet. Some types of recycling appear every year but the problems are frequently associated with techniques and materials that should be use...
Article
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Firstly, this paper aims to introduce the MCT ("Miniature, Compacted, Tropical") geo-technical classification system, which, developed more than twenty years ago, has been used for technological control in the construction or rehabilitation of roads. Especially designed for compacted tropical soils, the MCT system adopts trial procedures for soil b...

Citations

... The case analyzed in this research concerns of a kind of structural pavement normally used in regional São Paulo state Airport, see Fortes et al. [7] and Uddin, Garza [9]. SeeFigure 7a In this section numerical examples are present to show the ability of the contact mechanics techniques to solve pavement structures. ...
... At the same time, the blending procedure at a speed of 1600 r/min was continued for 1 hour using the fan blender. Prepared asphalt was transmitted to the high velocity blender in a velocity of 2500 r/min at the stable temperature of 190 ± 5°C for 2 hours [15,33]. For preparing the specimen for the ductility experiment, the amended bitumen was heated to 163°C ± 5°C with stirring and then teemed into mould assembly and put on a brass sheet. ...