Brief introduction of concrete fiber expansion anti-cracking agent
Keywords
Anti-cracking agent, concrete, fiber expansion anti-cracking agent, PP fiber
Crack Resistance Mechanism
The polypropylene fiber is evenly distributed in the concrete, which helps to reduce the plastic shrinkage of the concrete and the stress during freezing and thawing, so as to achieve the effect of crack resistance.
Polypropylene fiber is a kind of high-strength fiber. When added to concrete or mortar, it can effectively control the micro-cracks caused by concrete (mortar) solid-plastic shrinkage, dry shrinkage, temperature changes and other factors, prevent and inhibit the formation and development of cracks, and greatly improve the Crack resistance, impermeability, impact resistance and earthquake resistance of concrete.
Because the polypropylene fiber produces fine reinforcement and mesh support, the cracking process of the concrete is inhibited; at the same time, the expansion component chemically reacts with the cement hydrate and produces moderate expansion, which can prevent the concrete from shrinking and cracking.
Material Composition
Calcium Sulphoaluminate expansion cement, polypropylene fiber, waterproof component, expansion component, etc.
Performance advantages
The fiber expansion anti-cracking agent is added to the concrete. Due to the disordered distribution of the fibers wrapped in the cement, the anchoring force of the matrix to the aggregate is enhanced, thereby improving the wear resistance, increasing the toughness of the concrete and increasing the ultimate elongation rate.
