Assessment of a bridge structure, demolition & recycling of materials

Abstract

In the appraisal of deteriorated structures, a comprehensive investigation and a detailed assessment of damages are necessary. Intervention options, proposed for rehabilitation or reconstruction, must be based on the assessment of the structure, and on various factors, including constraints specific to the project. An investigation was carried out on a deteriorated concrete bridge structure in Malta. The investigation was followed by an assessment of damages. The proposals for reinstatement were based on the damage assessment, and also on other criteria which were specific to the particular project. The proposed solution included the demolition of the existing deteriorated bridge superstructure, and renewal of the superstructure as a continuous 3-span cast in place box girder, together with the rehabilitation of the substructure. Various waste materials were considered for recycling, including in particular the steel reinforcement, and the concrete.