A new tunnel formwork system from Pilosio reduces the time needed for assembly. Made from standard components, this can be used for a wide range of geometries.
Fibre-reinforced concrete (FRC) has long been used for road pavements and is now a common material for civil engineering applications such as precast tunnel segments and sprayed concrete linings. However, testing FRC is challenging because the fibres – which are usually steel or macro-synthetic – rupture suddenly, causing the specimen to lose its bearing capacity. During this critical phase any sudden release of elastic energy by the frame of the testing machine may cause the premature rupture of the specim
A road improvement plus tunnel and bridge building contract in an area once inhabited by dinosaurs in northern Argentina, is a small but key part of an ambitious project to complete a road that will eventually link the Atlantic and Pacific coasts of Latin America - Adriana Potts reports. Remote, rough and spectacular are words that come to mind when describing the mountains of Ischigualasto in Argentina's northern province of San Juan This is the only place in the world where an undisturbed sequence of rock
A road improvement plus tunnel and bridge building contract in an area once inhabited by dinosaurs in northern Argentina, is a small but key part of an ambitious project to complete a road that will eventually link the Atlantic and Pacific coasts of Latin America - Adriana Potts reports. Remote, rough and spectacular are words that come to mind when describing the mountains of Ischigualasto in Argentina's northern province of San Juan This is the only place in the world where an undisturbed sequence of rock
Materials used to construct roads must meet defined standards to offer a variety of solutions including durability, smoothness and long life. The need for the regular testing of materials used in highway construction is now a must on all projects. It is essential to make sure that the materials used in producing roads meet defined standards and offer durability, smoothness and long life.
