Comportamiento frente al fuego de materiales compuestos de escayola aligerados con perlita y polímeros superabsorbentes

Abstract

The effects of fire on construction materials and systems

can affect buildings in many different aspects, ranging from

minor surface damage to severe effects that can affect their

dimensional stability and load-bearing capacity. The aim of

this research is to characterise the effects of fire on a new

plaster material specially designed for the manufacture of

prefabricated elements. This plaster composite is made by

incorporating superabsorbent polymers and perlite, which

reduces its density and thermal conductivity. In the study,

real direct fire exposure tests were carried out, in order to

subsequently carry out a mechanical characterisation of the

new plaster composites and check the effects that a fire would

have on them. The incorporation of sodium polyacrylate and

potassium polyacrylate as superabsorbent polymers together

with the addition of perlite has been shown to improve the fire

resistance of the plaster composites.