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Nanotech increases strength of fireproof concrete

August 20, 2014

Nanotech increases strength of fireproof concrete

Iranian researchers, in association with colleagues from Brazil, have succeeded in the production of fireproof concrete with high raw strength by using nanotechnology.

Mohsen Nouri Khezrabadi won the Gustav-Eirich 2014 international prize for his innovation, Fars News Agency reported.

Slow-burning bricks are widely used in fireproof industries, including steel and non-iron metals. Fireproof concrete possesses a large share of shapeless slow-burning


In recent years and due to the development of nanotechnology, efforts have been made to use nanometric materials, including colloid silicon, as replacement for fireproof cement in the production of concrete.

The researchers increased the raw strength of slow-burning materials by using specific additives and augmenting gelation in silicon nanoparticles.

Achievements of researchers help the development of a new generation of casting slow-burning materials with nano bonds and obtaining extra high raw strength paves the way for increasing the use of these products.

In this research, the gelation process of colloid silicon has been augmented by using appropriate additives, to the extent that the raw strength of casted bodies has increased by two and a half times. It has reached the level of a slow-burning cast containing 4 wt./percent of fireproof cement.

The nanometric nature of colloid silicon used in the slow-burning materials has different effects on the performance of the casted concrete.

Among the effects, mention can be made of the ability of faster drying, dimensional stability, availability of sintering at lower temperatures and the creation of mullite phase inside the bodies.

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Source: Iran Daily

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