High-ductility concrete is a fiber-reinforced composite material based on micromechanical design principles and composed of cement, quartz sand, and other materials. Compared to ordinary concrete, it exhibits higher strength, toughness, crack resistance, and damage tolerance. Fibers used in high-ductility concrete primarily include polypropylene macrofibers, polyvinyl alcohol (PVA) fibers, and ultra-high molecular weight polyethylene (UHMWPE).

Product Features:

1. Strain hardening effect during tension.

2. Tensile strength can reach 50 to 200 times that of ordinary concrete.

3. Multiple crack development—achieving crack resistance—also known as "bendable concrete."

Mechanical Characteristics:

1. Compressive and splitting mechanical properties

a. High toughness in compression failure tests

b. Toughness in splitting failure tests

c. High residual strength (90%) even after secondary loading after failure;

d. Good integrity even at high strain (7%).

2. Flexural Properties

a. Exhibits deflection hardening

b. Cracks are dispersed and fine

3. Tensile Properties

a. Exhibits strain hardening during deep drawing

b. Strength is maintained even after specimen cracking

c. Ultimate tensile strain can reach over 100 times that of ordinary concrete

Other Properties:

1. Fire Resistance → Fibers dissolve at high temperatures, creating pathways for water vapor migration, releasing vapor pressure within the component and preventing decomposition and damage to the cement matrix.

2. Self-Healing Ability → Strong self-healing properties enhance the durability of components in changing environments.

3. Environmentally Friendly → High-ductility fiber-reinforced cementitious composites can be incorporated with fly ash to replace cement, reducing the serious air pollution caused by fly ash.