Highway 4G Cúcuta – Pamplona
The Unión Vial Río Pamplonita Concessionaire is in charge of the Pamplona-Cúcuta dual carriageway, the most important road infrastructure work in Norte de Santander. This project is a solution to the border mobility between Colombia and Venezuela, as well as with the northeast of Colombia. The main characteristics of the project are: its length of […]
“La Linea” Road Pass, Colombia
Tunnel “La Linea”, recently inaugurated, connects Colombia from the south-west to the center of the country, from Portal Bermellón in Cajamarca – Tolima, to Portal Galicia in Calarcá – Quindío. With a length of more than 8 kilometers, it is the longest road tunnel in the Americas. The road has two motorways exits and 13,4 […]
Grand Paris Express
The Grand Paris Express is the largest urban project in Europe with the construction of 200 km of automatic lines, as much as the current metro, and 68 stations. The four new lines of the Grand Paris Express (15, 16, 17 and 18), as well as the line 14 extended to the north and south, […]
Hydraulische Druckmessdosen
Codes der Referenzprodukte: L111, PK45H, P252A, TUNY Hydraulic pressure cells are designed to measure stress in mass concrete or placed at the interface between the structure and the wall of excavation. The pressure pad consists of two steel plates welded together around their periphery and spaced apart by a narrow cavity saturated under vacuum with […]
Ulu Jelai Hydroelectric Project, Malaysia
The Project will involve the construction of an accumulation reservoir (Susu Reservoir) with two main water intakes, Telom Intake and Lemoi Intake, located upstream of Susu reservoir. The main part of the project is the construction of the Susu dam on the Bertram River, more than 80 m high and entirely built using the advanced […]
Rome Underground – Line C – Italy
Rome metro Line C runs through the city from North-West (Della Vittoria district) to the eastern suburb and is extending beyond the Grande Raccordo Anulare.Line C has a full-run of 25,6 km and 30 stations, passing through the old town centre.The Route will be characterised by the green colour. The interchanges with the other metro […]
Center for Monitoring of impact of infrastructures on environment, Bucharest – Romania
Under EU financing, a Center for monitoring of impact of infrastructure on environment has been created within Technical University of Bucharest.The project was developed though an International Tender which was awarded to SISGEO. The aim was to provide Technical University with comprehensive list of geotechnical equipment, in order to allow University specialist to deal with […]
Bangkok Blue Line Extension Project, Contract 2 – Thailand
The MRT (Metropolitan Rapid Transit) Blue Line is being extended.The extension is expected to be completed in 2017 and by then the Blue Line will become a loop line around the centre of Bangkok, with the part on the western side of the Chao Praya River mainly being an elevated system and the other half […]
FAQ#030 – Why do the NATM pressure cells have repressurizing tubes?
NATM pressure cells are normally used to measure tangential and radial stresses in concrete tunnel lining. They are embedded in concrete and after curing the cell shall be repressurized to mantain the intimate contact between the pessure pad and the surrounding material.
FAQ#022 – Why NATM pressure cells have repressurizing tubes?
NATM pressure cells are normally used to measure tangential and radial stresses in concrete tunnel lining. They are embedded in concrete and after curing the cell shall be repressurized to mantain the intimate contact between the pessure pad and the surrounding material.
FAQ#021 – Is the repressurizing hand pump for NATM pressure cells filled by de-aired oil, ready to use? Which kind of oil is used for this purpose?
Yes it is. The pump is filled at factory under vacuum with de-aired oil. For normal use within concrete the oil inside the pump is enough to repressurize 50 pcs. of NATM pressure cells. The oil we use is Edwards Ultra-grade 19 type for vacuum-pump use.