Tire-derived aggregate (TDA) has been proposed in recent studies to be considered as part of backfill soil reduce stress and strain developed buried pipes. However, little attention is paid checking the influence TDA on behavior concrete pipes under trafficked roads. This research this topic using a verified numerical model that considers three-dimensional nature traffic load effects. Different...

Abstract Research has been carried out to identify the potential for soil corrosion design of cathodic gas pipeline protection system. The research location is in Cimanggis - Bitung, West Java, which located at coordinates 6°19’00 “- 6°28’00” South Latitude and 106°43’00 106°55’30” East Longitude. Measurement resistivity using Wenner method refers ASTM G37, with variations distance 0.75m, 1.50m...

The structural performance of buried drainage pipes is gradually deteriorating under the influence external loads and chemical microbial corrosion. It crucial to reinforce them improve their bearing capacity for safe use. One important technologies used extend service life deteriorated use fiber-reinforced cementitious composites (FRCC) spray repair. Combined with current situation pipes, this ...

At the present time, water and sewer pipe networks are predominantly inspected manually. In near future, smart cities will perform intelligent autonomous monitoring of buried networks, using teams small robots. These robots, equipped with all necessary computational facilities sensors (optical, acoustic, inertial, thermal, pressure others) be able to inspect pipes whilst navigating, self-locali...

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Abstract The acoustic propagation characteristics of axisymmetric waves have been widely used in leak detection fluid-filled pipes. related methods and equipment are gradually coming to the market, but their theoretical research obviously lags behind field practice, which seriously restricts breakthrough innovation this technology. Based on fully three-dimensional effect surrounding medium, a c...

Abstract In alkaline and near-neutral soil environments, the mechanical seismic performance of buried steel pipes degrades with deepening corrosion over time. To study fragility different service ages in these an incremental dynamic time history analysis typical was carried out time-varying constitutive model steel. A probabilistic demand for environments then established, which can characteriz...

In this work, an innovative system for structural health monitoring of metallic pipes is presented. The proposed relies on using the pipeline as a waveguide propagation electromagnetic (EM) signal; possible anomalies in pipe provoke partial reflection propagating EM signal. Different from previous works that address similar applications, test signal injected pipeline/waveguide through coaxial/w...