Effect of early strength agent on the properties of new bridge expansion joint UHPC material

Abstract

With the increasing development of urban transportation, many roads and bridges will have some cracks and damage. If not handled in time, long-term development will have a great impact on the durability and safety of the bridge. How to quickly and effectively repair the cracks of the bridge has become a problem that we urgently need to solve. As a high-strength, high-toughness, low-porosity, ultra-high-strength cement-based material, ultra-high performance concrete not only has excellent mechanical properties such as compressive, flexural, and impact resistance, but also has good bonding strength and toughness. This material is very suitable for use in bridge expansion joints. This paper proposes a new bridge expansion joint UHPC material by consulting a large number of documents, and studies the effect of early strength agents on it, laying the foundation for the actual use of the new bridge expansion joint UHPC material.