ABSTRACT
The most notable characteristic of Ultra-High Performance Concrete (UHPC) is its extremely dense microstructure, resulting in a steel-like compressive strength of about 180 to 250 MPa, combined with a significantly improved durability. The structural density is primarily due to the high packing density accomplished with an optimum grading curve comprising fine and ultra-fine particles ≤125 µm in the cement matrix, and a comparatively low w/c-ratio of about just 0.20.
