 Listed below are some basic mechanical properties of ECC, or Engineered Cementitious Composite, a specific formula of HPFRCC, developed at the University of Michigan.This information is available in Victor C. Li's article on (ECC)- Tailored Composites through Micromechanical Modeling.The first property listed, the ultimate tensile strength of 4.6 MPa, is slightly larger than the accepted tensile strength of standard fiber-reinforced concretes, (4.3 MPa).