Master Builders Solutions contributes to bringing Thang Long Bridge back to traffic

Thang Long Bridge was officially reopened to traffic on January 7, 2021 after a 6-month suspension for repair, to the joy of the people of the capital and has special significance at the beginning of 2021 as well as prepare for the Lunar New Year, helping to reduce traffic congestion.

Thang Long Bridge was built in 1974 and opened to traffic in May 1985. The bridge has a main span across the river 1,680m long, including 15 spans of steel truss, forming 5 continuous beams each with a length of 336m. The bridge consists of 2 floors: the railway bridge and rudimentary car on the lower floor, and the road bridge on the upper floor. Over many years of use, the bridge deck has been severely damaged with the appearance of longitudinal cracks at all spans, in many places the density of cracks appears thick, the bridge deck is peeling, and the subsidence is dangerous for the road. ease of passage through the bridge. After many local repairs and major repairs in 2009, but still could not completely overcome, the General Department of Roads has coordinated with functional units and domestic and foreign scientists to participate in the consultation. The problem proposes solutions to repair the serious condition of the bridge deck with the desire to bring Thang Long Bridge back into operation and ensure traffic safety.

The superior solution offered by experts to repair Thang Long Bridge is UHPC (Ultra High Performance Concreate) super-functional concrete carpet. To produce UHPC concrete that requires a high grade of concrete with a minimum strength of 120 MPa with a minimum thickness of 60mm, this problem has challenged the experts of Master Builders Solutions to come up with a suitable concrete admixture solution. for the production of UHPC concrete. In conjunction with project experts, Master Builders Solutions proposed MasterGlenium - an improved PCE-based high-grade superplasticizer as the optimal solution to meet the technical standards of UHPC concrete.

Having passed numerous tests with rigorous standards and varying weather conditions between the laboratory and the field, MasterGlenium has proven its suitability and outstanding properties to participate in the project. repair Thang Long bridge. “Besides the benefit of allowing concrete to work flexibly but without stratification, MasterGlenium with its high compressive and flexural strengths also helps to reduce maintenance, reduce the resources required for compaction, and The high waterproofing ability brings a sustainable UHPC concrete foundation, which can completely overcome the damage of Thang Long Bridge.” With advanced technology on this repair, it will help Thang Long bridge deck to use stably. over 10 years.

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