VSM / Efficiency / Heat resistence and fire resistance

Heat resistence and fire resistance

One of the basic problems related to currently used refractory and heat-proof concretes based on inorganic binding agents is cracking, which considerably reduces their operational life and predetermine forthcoming repair work.

The reason for cracking and destruction of refractory and heat-proof concretes is sharp temperature drops, volume expansion of decomposition products of binding-agent-forming minerals and water vapor.

The most considerable effect of adding VSM to refractory and heat-proof concretes is as follows:

  • Due to complete burnout of polymer fibers at 350° C (mass fraction of ash is 0.035%) refractory concretes acquire optimal porous structure, which means reduced risk of explosive rupture caused by high temperatures;
  • Increased impact strength allows to avoid damage to product or its heat-protection layer during transportation and assembly, as well as accidental mechanical damage

Reduced cracking and shrinkage stress