Author(s)

Y. Diab & R. Zentar

Abstract

Geotextile in sewers rehabilitation Y. Diab, R. Zentar DUNE S.A., Centre d'Entreprise et d'Innovation, P.O. Boz 2^2, gP^O^ y2//e2/r6a^e Cecfez, France ABSTRACT Rehabilitation of sewers is vital, because of the high cost to replace sewers located in urban areas. The rehabilitation technique presented in this paper is a trenchless technology by using a geotextile casing and by creating lateral horizontal support points. A calculation method based on the Finite Element method is developed, and the technical process to realize this rehabilitation is presented, then an evaluation of advantages of this technique is discussed SCOPE AND OBJECTIVES OF WORK An urban main sewer is being tested to evaluate its structural behavior under current operating loads. Many cracks and fractures were observed and their influence on the real behavior of the pipe has been studied. In the first part of the paper, the actual structural behavior is presented, an evaluation of maximal stre

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