The fire behaviour of the concrete modular systems will be studied by coupling a com-prehensive experimental study with the development of numerical tools. The former study includes thermomechanical characterization of the materials and fire resistance tests on the structural elements and their connections. In the numerical study, after validation with test results, parametric studies will allow optimisation of the elements and development of fire de-sign recommendations.

Objectives

• Evaluate the fire safety of the structural elements of the modular housing system (REI – RJ-SCIE, DL Nº. 224/2015 requirements).
• Propose protection systems/geometric alterations and/or material changes in case the REI requirements are not met.
• Study the influence of the following parameters on the behavior at high temperatures and fire of different structural elements:
  (a) type of concrete (UHPC vs. low-carbon concrete);
  (b) type of reinforcement (conventional vs. FRP);
  (c) incorporation of synthetic fibers in concrete to mitigate spalling phenomena in UHPC elements;
  (d) use of different thermal insulation materials in filling hollow UHPC elements;
  (e) geometric details and materials of slab-wall and wall-wall connections.