Application of Amorphous Calcium Aluminate in Rapid Hardening Ultra High Performance Concrete
Key words
Rapid hardening concrete, ultra-high performance concrete, amorphous calcium aluminate, lithium carbonate, calcium sulphoaluminate cement
Rapid hardening ultra-high performance concrete refers to the addition of quick-setting and rapid-hardening components on the basis of general ultra-high performance concrete, so that it can not only meet the technical indicators of ultra-high performance concrete but also meet the application requirements of rapid hardening and quick setting.
At present, rapid-hardening ultra-high-performance concrete is mainly used in the repair of bridges and other infrastructure under high-corrosion environmental conditions, which can significantly prolong the service life of concrete structures in severe corrosive environments.
Introduction of main materials of ultra-high performance concrete
Portland cement, fly ash, silica fume, expansion agent, lithium carbonate, polycarboxylate superplasticizer, defoamer, steel fiber, etc.
Introduction of additional materials for rapid hardening ultra-high performance concrete
Amorphous calcium aluminate, tartaric acid, calcium sulphoaluminate cement
