Concept

Wearing course

The wearing course, also known as a friction course or surface course, is the upper layer in roadway, airfield, and dockyard construction. The term 'surface course' is sometimes used slightly different, to describe very thin surface layers such as chip seal. In rigid pavements the upper layer is a portland cement concrete slab. In flexible pavements, the upper layer consists of asphalt concrete, that is a construction aggregate with a bituminous binder. The wearing course is typically placed on the binder course which is then laid on the base course, which is normally placed on the subbase, which rests on the subgrade. There are various different types of flexible pavement wearing course, suitable for different situations. Stone mastic asphalt is a type of flexible pavement wearing course which is typically used for heavily trafficked roads.

Official source

https://en.wikipedia.org/wiki/Wearing_course

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Related lectures (2)

Foundation Layers in Road Construction

Explores the significance of foundation layers in road construction and the benefits of stabilizing different types of roads.

Road Pavement Design: SN Determination

Explains the determination of structural number for road pavements and practical design applications.

Related publications (3)

ELLPAG - Economics of Long-Life Pavement

One of the most important research efforts developed to date is the European Project ELLPAG (European Long-Life Pavement Group). It was founded, in 2002, as a FEHRL group to gather the European knowledge. The group has been active since then, and it has been focused on flexible, semi-rigid and rigid pavements. The advantages of this type of pavements can be very significant, either in terms of economy, serviceability or environment. However, important research needs are still required as pointed out by ELLP

2008

Strain and stress distributions in flexible pavements under moving loads

André-Gilles Dumont

Calculated strain distributions in flexible pavement were studied by comparison with measurements made on full-scale structures. The calculated results were obtained by elastic and viscoelastic modellings of these structures. As no stress measurements were collected, the stress distribution was studied by comparing the results of elastic and viscoelastic calculations. For different loading and temperature conditions, and assuming the hypothesis of the French design method for flexible pavement, modellings p

2004

Déformations des couches bitumineuses au passage d'une charge de trafic

Jacques Perret

Undertaken in the field of design methods for flexible pavement, the present study focuses on the introduction of traffic loads, applied mainly to mechanistic empirical methods. In such research, strains due to traffic loads — calculated by pavement modeling based on linear elastic theory — are used for the evaluation of the life duration of the pavement. Real traffic loads on pavement vary significantly according to their intensity as well as their application modes. Our work aims to evaluate the relevance

EPFL2003

Related concepts (1)

Subbase (pavement)

In highway engineering, subbase is the layer of aggregate material laid on the subgrade, on which the base course layer is located. It may be omitted when there will be only foot traffic on the pavement, but it is necessary for surfaces used by vehicles. Subbase is often the main load-bearing layer of the pavement. Its role is to spread the load evenly over the subgrade. The materials used may be either unbound granular, or cement-bound.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.