Concrete is a widely used construction material, however, there are some problems with traditional concrete, such as low compressive strength, easy to crack, and poor durability. To solve these problems, nano materials have been introduced into concrete as a new type of material to improve the performance of concrete.
Nanomaterials are materials with a size between 1 and 100 nanometers, and common nanomaterials include nano-silica, nanoalumina, carbon nanotubes, and nanoiron oxide. These nanomaterials have unique physical and chemical properties that can improve the performance of concrete.
Application of nanom aterials in concrete
Nano-silicon oxide can enhance the compressive strength of concrete and improve the durability of concrete. Research shows that adding 5% nano-silicon oxide to concrete can increase the compressive strength of concrete by about 20%. In addition, nano-silicon oxide can also reduce micro-cracks in concrete and improve the durability of the concrete mix.
Nano alumina can enhance the compressive strength and durability of soil mix. Research shows that adding 5% of nano alumina to concrete can increase the compressive strength of concrete by about 15%. In addition, nano-alumina can also reduce the shrinkage and cracking of concrete.
Carbon nanotubes can enhance the compressive strength and toughness of concrete. Studies have shown that adding 1% of carbon nanotubes to concrete can increase the compressive strength of concrete by about 30%. In addition, carbon nanotubes can also increase the toughness of concrete and reduce the cracks of soil mixing.
Iron oxide nanoparticles can enhance the durability and frost resistance of concrete. It has been shown that adding 3% iron oxide nanoparticles to concrete can increase the durability and frost resistance of concrete. In addition, iron oxide nanoparticles can reduce infiltration and oxidation of concrete.
The application of nanomaterials in concrete can improve the performance of concrete with the following effects
Nanomaterials can fill the micropores and microcracks in concrete, increase the compactness and strength of concrete, and thus improve the compressive strength of concrete.
Nanomaterials can improve the durability of concrete and reduce the decay of concrete performance. For example, nano-silicon oxide can reduce micro-cracks in concrete and improve the durability of concrete.
Nanomaterials can fill the micropores and microcracks in the concrete, reducing the shrinkage and cracks in the concrete, thus improving the durability of the concrete.
Nanomaterials can improve the frost resistance of concrete and reduce the deterioration of concrete properties at low temperatures. For example, iron oxide nanomaterials can improve the frost resistance of concrete.
A study showed that adding 5% of silicon oxide nanoparticles to concrete can increase the compressive strength of concrete by about 20%. In addition, nano-silicon oxide can also reduce micro-cracks in concrete and improve the durability of concrete. The study was conducted on a bridge, and the results showed that the service life of the concrete bridge with the addition of nano-silicon oxide was more than 30% longer than that of the conventional concrete bridge.
A study showed that adding 5% of nano alumina to concrete can increase the compressive strength of concrete by about 15%. In addition, nano-alumina can also reduce the shrinkage and cracking of concrete. The study was conducted on a tunnel, and the results showed that the service life of the concrete tunnel with the addition of nano alumina was more than 20% longer than that of the conventional concrete tunnel.
A study showed that adding 1% of carbon nanotubes to concrete can increase the compressive strength of concrete by about 30%. In addition, carbon nanotubes can also increase the toughness of concrete and reduce cracks in concrete. The study was conducted on a high-rise building and showed that the safety of the concrete structure with carbon nanotubes increased by more than 25% compared to the conventional concrete structure.
The application of nanomaterials in concrete can improve the performance of concrete and increase its compressive strength, durability, frost resistance, etc. At present, the application of nanomaterials in concrete is still outside the exploratory stage and requires further research and experiments. In the future, the application of nanomaterials in concrete is promising and will provide new technical support for the development of construction engineering.
Supplier
TRUNNANO is a supplier of Cement Anti-crack Agent-Preventing Cracks in Foam Concrete(which is one of concrete additives) with over 12 years experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for high quality concrete crack reducing admixture, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com).
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