Call Us
Contact Us

Application of Sulphoaluminate Cement in High-speed Railway Bridge Construction and Quick Repair of

With the rapid development of high-speed railway construction, building materials that can satisfy high-speed railways and roads have gradually become a concern for railway scientific research institutions and related scientific researchers. During the erection of high-speed rail bridges, a fast, high-strength, and high-fluidity grouting anchor material is required. The performance of this material directly determines the speed of high-speed rail bridge laying.

1. The application of sulphoaluminate cement in high-speed railway bridge construction

Sulphoaluminate cement can be completely self-leveling, has fluidity within 30 minutes, but can harden quickly afterwards. The compressive strength can reach more than 30 MPa in 2 hours, and the strength can continue to increase in the later period. The use of this sulphoaluminate cement product can speed up the construction of high-speed rail bridges and ensure the quality of construction.

Sulphoaluminate cement can be used at temperatures below -25°C. And it can reach the design strength requirement of more than 20MPa within 2 hours in normal construction, which reflects the excellent performance of sulphoaluminate cement. This also laid the foundation for the rapid construction of high-speed rail at low temperatures.

2. Application of sulphoaluminate cement in rapid repair of roads

The rapid repair of airport roads is a big problem that the airport maintenance work must face. Repairing a small area is relatively simple, but it is more difficult to repair and replace a large area. Regarding road repairs, it is necessary to solve the contradiction between the rapid hardening of 1 to 2 hours to reach the use strength and the rapid hydration of large-volume concrete and the concentrated release of hydration heat to produce temperature cracks.

The speed of repairing concrete pavements such as expressways, municipal roads, and village-to-village highways directly affects local traffic conditions. Nowadays, there are many maintenance teams occupying road maintenance for a long time, causing traffic congestion. By adjusting the application technology of sulfoaluminate cement admixtures, it is possible to complete road repairs within 1 to 2 hours and resume opening to traffic, and the repaired roads will not crack or fall off. Sulphoaluminate cement will play an increasingly important role in future road construction.

Related Products
Application of Sulphoaluminate Cement in High-speed Railway Bridge Construction and Quick Repair of