This article expounds on the problem of use de-icing salts in corrosion steel rebars bridge decks and their effect post-tensioning elements. In particular, this paper focuses structures affected by an aggregate–alkali reaction without any waterproof treatment using example one structure whose repair was carried out 2020. structure, internal stresses due to caused longitudinal cracks upper face ...

Ageing, and increasing traffic loads, has become a major problem into today bridge industry. These bridges go deficiency in its Load Carrying Capacity from ageing, exhibited excessive deformation which renders the usage to an unacceptable level. will either, impose restriction, or upgrading existing defy these adverse conditions. At Burri Bridge, after 33 years on operation, signs of ageing sho...

Synchronous belt drives combine the advantages of simple (flat, trapezoidal or ridged) due to their low weight, maintenance, large linear speed ranges and high transmission ratios with chains: absence sliding, synchronized speed, tensioning, etc. Thanks toothing which enters corresponding one synchronous pulleys, there is direct power without sliding as between two gears. This article develops ...