Brief Introduction of High Performance Fiber Reinforced Cementitious Composites
Key words
GHPFRCC, ECC, High Performance Fiber Reinforced Cementitions Composites, Self-Healing
High Performance Fiber Reinforced Cementitions Composites, GHPFRCC
With Portland cement as the matrix, alkali-resistant glass fibers, general-purpose synthetic fibers, various ceramic fibers, carbon and aramid fibers and other high-performance fibers, metal wires, natural plant fibers and mineral fibers as reinforcements, fillers, chemical additives are added. A composite material formed by a compounding process of agent and water. The fiber-reinforced composite material has the characteristics of high ductility, high durability, small crack width and self-healing cracks.
Engineering Cementitious Composites, ECC
High ductility fiber reinforced cement-based composite material is a fiber reinforced composite material based on the design principle of micromechanics, with cement, quartz sand, etc. as the matrix. Compared with ordinary concrete, it has high strength, high toughness, high crack resistance and high resistance. damage ability.
Fiber-reinforced cement-based composite material is a composite material formed by discontinuous fibers uniformly dispersed in the cement concrete substrate. The fiber and the cement slurry substrate are relatively firmly bonded to form a fiber network throughout the entire structure. When the basic material cracks due to excessive tensile force, the tensile force can be gradually transferred to the fibers spanning the crack, which increases the deformation capacity of the concrete structure. The higher tensile strength of the fibers increases the tensile strength of the concrete structure. The tensile, bending, cracking, fatigue, vibration and impact resistance of composites are significantly improved.
Performance characteristics
The mechanical properties are obviously improved compared with ordinary concrete; the slump value of fresh concrete is lower than that without fiber; the impermeability of concrete is obviously improved
Performance advantage
It can effectively prevent or reduce cracks, improve long-term working performance, improve deformation ability and durability.
Materials composition
Portland cement, micro silica fume, fly ash, polycarboxylate superplasticizer, defoamer, HPMC, foaming agent, water repellent, fiber, etc.
