The Ahmedabad-Gandhinagar Metro Rail Project is a new mass-transit rapid transit system in Gujarat, West India. The project is being implemented by Metro Link Express for Gandhinagar and Ahmedabad (MEGA) and aims to meet the city’s growing population while providing commuters with a better transport system.
The total length of the metro’s first phase is 39.3km, with 33.3km of elevated section and 6 kilometers underground. The metro will connect suburbs in Ahmedabad along east-west and north-south axis, and the route will also be extended to Gandhinagar in Phase-2.
The construction of the first phase, comprising 32 stations connecting the four corners of the city, has been in progress since 2015. Being expected to operate in 2020, the first trial run of the metro line is scheduled for January 2019.

Tubos de registro sónico de acero para pruebas de integridad del hormigón.

For the first phase of the Ahmedabad metro, dextra was involved in supplying its CSL solution Sonitec for the 6-kilometer long viaduct. Sonitec is Dextra’s sonic logging tube system for Cross-hole sonic logging tests. CSL method allows the contractors to verify the concrete integrity in D-walls, bored piles, drilled shafts, barrettes or in concrete piles. Sonitec helps facilitate the assembly and installation of long tubes in reinforcing cages by its Instant Connection characteristic. Thanks to its large bell-mouth, the tubes can be easily connected seamlessly.

Udhampur-Srinagar-Baramulla Rail Link (USBRL) es un gigantesco proyecto de infraestructura de Indian Railways en las montañas del Himalaya, diseñado para proporcionar conectividad ferroviaria a los valles de Jammu y Cachemira. Este proyecto tiene como objetivo permitir el acceso a la red ferroviaria desde todas partes del país y conectar zonas lejanas con el resto de la India, en respuesta a la visión del Primer Ministro de una Nueva India para 2022.

El proyecto se divide en tres secciones: las vías Udhampur-Katra de 25 km, Katra-Qazigund de 129 km y Qazigund-Baramulla de 118 km. Partes de las líneas ya han sido terminadas y puestas en funcionamiento.

For this massive project, Dextra supplied 3,000 sets of Self-Drilling Rock Bolts to stabilize loose rock mass after excavation.
El Perno de roca autoperforante is a bolting solution for unstable ground conditions and fractured rock formations. The loosening of the rock strata is prevented by drilling a hole in the rock, placing standard sacrificial drill bit and a hollow bar (made of steel or FRP): cementitious grout is then injected into the hollow bar.

A medida que el megaproyecto de infraestructura esté a punto de finalizar, el USBRL unirá Jammu con Cachemira, abriendo una nueva página para el sistema de transporte indio.

The MRT Pink Line & Yellow Line are elevated mass rapid transit line being built and operated by the BSR joint venture (BTS Group Holdings, Sino-Thai Engineering and Construction STEC, and Ratch Group RATCH) in Bangkok, Samut Prakan, and Nonthaburi Provinces, Thailand.

El monorraíl MRT Pink Line tendrá una longitud de 34,5 kilómetros y 30 estaciones. Conectará los distritos del norte de Bangkok y Nonthaburi con cinco líneas de transporte público que recorren una ruta clave de transporte de este a oeste.

La Línea Amarilla, de 30,4 kilómetros, tendrá 23 estaciones y conectará otras 6 líneas de transporte masivo. Proporcionará transporte público a lo largo de los corredores viales de Lat Phrao y Srinagarindra, muy congestionados.

dextra was involved in these 2 MRT line extension projects by providing bartec splicing systems. More than 440,000 pieces of the couplers, size 16-32mm, were installed inside connecting slabs to connect guideway beams.

In addition, the contractor chose Dextra’s Anclajes finales as an alternative to rebar hooks to avoid steel congestion in severely reinforced areas such as beam-column connections. Around 530,000 small headed bars were supplied to the construction sites.

Se espera que la Línea Rosa del MRT esté operativa en junio de 2022, seguida de la Línea Amarilla un año después.

Bangkok’s MRT Orange Line is one of the planned rapid transit lines of the Mass Rapid Transit Authority of Thailand (MRTA). The main purpose of this 39.5-kilometer railway line is to improve the connection between western, central and eastern parts of Bangkok, and consequently ease the Thai capital’s traffic congestion. This project is also part of Thailand’s plan to stimulate the national economy and improve the infrastructure.
La Línea Naranja del MRT está dividida en dos secciones: desde Bang Khun Non hasta el Centro Cultural de Tailandia, y desde el Centro Cultural de Tailandia hasta Min Buri, y comprende 22 estaciones subterráneas y 7 estaciones elevadas.

dextra PFV ojos suaves for tunnel construction

For the Thailand Cultural Centre – Min Buri section, the contractor Joint-Venture of Italian-Thai Development and CKST opted for more than 40 units of Dextra’s turnkey solution for Tunelización FRP Soft-Eye.
Being well-known for its unique cut-ability technology, Glass Fiber Reinforced Polymer (PFV) Soft-eyes facilitates break-ins and break-outs of the Tunnel Boring Machine (TBM). This is in fact the best alternative to conventional steel Refuerzo – which would require mobilization of additional manpower and equipment.

dextra Sonitec for Crosshole Sonic Logging (CSL) tests

In order to verify the integrity of concrete in deep foundations, Italian-Thai Development, CKST JV and Unique Engineering have also chosen Dextra’s cross-hole sonic logging tubes – Sonitec. These CSL tubes are available in several diameters, and have been specifically designed for easy and fast handling to accelerate construction speed. Over 30,000 tubes have been delivered to the project as of March 2022.

Complete rebar splicing solutions applied for the metro’s D-walls

To optimize the Refuerzo of the Diaphragm Walls (D-Walls), bartec, one of Dextra’s mechanical Empalme de barras de refuerzo systems, was installed. Thanks to its easy-to-install characteristic, bartec helps accelerate the projects schedule and reduce inventory as the standard coupler can also be used for Position splices. More than a million of bartec couplers have been delivered to the site.

Moreover, around 7,000 headed bars were applied at the end of the Refuerzo bar as an alternative to hooks in congested areas of the structure.

Para obtener más información sobre nuestras soluciones disponibles en Tailandia, comuníquese con nuestro oficina de bangkok.

El Monorraíl de El Cairo es un sistema de tránsito rápido de monorraíl de dos líneas en El Cairo, Egipto, que se encuentra actualmente en construcción. Cuando el proyecto esté terminado, las dos líneas proporcionarán las primeras conexiones de transporte público desde la Nueva Capital Administrativa y la Ciudad 6 de Octubre hasta el área metropolitana de El Cairo.

La línea de 54 kilómetros entre la Nueva Ciudad Administrativa y El Cairo Oriental tardará 60 minutos, mientras que la línea de 42 kilómetros entre la Ciudad 6 de Octubre y Giza tardará 42 minutos.

dextra supplied more than 300,000 bartec standard and bridging couplers for the connection of reinforcement bars. bartec is simple to install and does not require professional skilled labor, which reduces labor on the job site, formwork costs, and increases job site safety.

Around 400,000 bartec headed bars were also installed as a replacement for Ganchos in concrete members and connections.

Moreover, the project used Unitec bolted couplers in repair works for the connection of two rebars which have not or cannot be threaded.

La primera etapa del sistema se abrirá al público en 2022, seguida de una segunda etapa en 2023.

The Forrestfield Airport Link is a rail infrastructure project lolcated in Perth, Western Australia. The 8.5km line will connect the existing Midland Line to Perth International Airport and further to the eastern suburbs. The project features two twin-tunnels bored with Tunnel Boring Machines (TBMs) which move up to 26 meter underneath the bed of Swan river, highways and Perth Airport, adding three new stations to the city’s transportation network: Belmont, Airport Central and Forrestfield.

For the tunnel boring packages, dextra supplied a total of 10 PFV ojos suaves between 2016 and 2017 (two for Airport Central Station, two in Abernethy, four in Belmont and two in Bayswater) to the contractor JV of Salini Impregilo and NRW Salini Impregilo. ojos suaves are rebar cages made mostly of Glass-Fiber Reinforced Polymer (GRFP) bars and some steel rebar. ojos suaves can be cut by the TBMs and allow faster equipment breakthrough, saving precious time while avoiding to damage the TBM heads.

dextra also supplied a total of 65,000 Griptec connections for the station works. Griptec is distributed in Western Australia by Dextra’s partner InfraBuild Construction Services. They offer the complete service to the contractor: Cutting the rebar, preparing the bar ends with Griptec sleeves and bending them for final installation on site. This allows the contractor to achieve faster cycle times in rebar connection on site .

Sonitec, Dextra’s steel tubes for Crosshole Sonic Logging tests (to check concrete integrity in bored piles) were also supplied.

El enlace Forrestfield-Aeropuerto funcionará en 2022.

For more information about our solutions in Australia, please consult our Bangkok office

El Metro de Bruselas es un sistema de tránsito rápido que sirve a una gran parte de Bruselas, Región Capital de Bélgica. Consta de 4 líneas de metro convencionales y 3 líneas de pre-metro.

Line 3 is a tram line that runs through the city center from Churchill in the south to Esplanade in the north, using the North-South Axis tunnel. The total route will be 10.3km long.

An 150m long new tunnel was dug underneath the Brussels North railway station to connect two existing underground tunnels. It was an important component of the new metro link.

Dextra supplied Sonitec, a tube solution that facilitates the integrity testing of foundations using the CSL testing method, to the construction site of Line 3. 13 kilometers of the tubes were installed in the 18m long pile cages.

El Sonitec system has been designed with the sole purpose of being easy to assemble and install in reinforcement cages.

The Cairo Metro is a rapid transit system in Greater Cairo, Egypt. It was the first of three fully-fledged metro systems built in Africa, as well as the first in the Arab world. It began service in 1987 as Line 1 between Helwan and Ramsis Square, covering a distance of 29 kilometers.

The Cairo Metro currently has 74 stations, 3 of which are transfer stations, with a total length of 89.4 kilometers as of August 2020. There are three operating lines in the system.

The new line, line 4, will run from Makram Ebeid Station to Police Academy Station near the Ring Road, with bored tunnels following Doctor Hassan El-Sherif Street and Ahmed El-Zomor Street. It will be 24 kilometers in total length.

Construction began in Q3 2019 and is expected to be completed in 2024.

Dextra has supplied 450,000 Bartec+ couplers and 42 PFV soft-eyes for the Refuerzo of the paredes pantalla.

Bartec+ is a mechanical splicing system with parallel threads for connecting concrete reinforcement bars with diameters ranging from 12 to 50 mm (ASTM #4 to #18). The threaded rebars are tensile tested at 90% of the rebar yield strength.

Dextra’s PFV soft-eyes solution is an integrated turn-key solution that uses cut-able Glass Fiber Reinforced Polymer (PFV) Refuerzo as an alternative to traditional steel rebars, allowing the penetration of Tunnel Boring Machines (TBM) to pass through paredes pantalla with ease.