Hajiesmaeili Amir

SNSF Project : FNS “Next generation UHPFRC” (23.14.04)

Duration : 01.08.2015 – 31.07.2019

Supervisor : Dr. Emmanuel Denarié

Doctoral Student : Amir Hajiesmaeili

Next Generation UHPFRC for a sustainable built environment

The premature deterioration of the built environment is a heavy burden for society, especially in terms of economy, energy consumption and CO2 emissions induced by construction and rehabilitation sites. Schalcher et al. (2011).

The extremely low permeability of Ultra-High Performance Fibre Reinforced Concretes (UHPFRC) associated with their outstanding mechanical properties make them especially suitable to improve this problem and decrease the cost of maintenance that is really considerable.

The Embodied Energy in UHPFRC mixes is dominated by two components: steel fibres and clinker. The proposed research project has aim to provide new experimental data as well as models on the mechanical and durability properties of UHPFRC with synthetic fibres and massive clinker replacement by limestone filler, for the following aspects which are still largely unknown :

  • Tensile hardening and softening response,
  • Time dependent response (creep and shrinkage) at early age and long term,
  • Transport properties (liquids and gases) at low to high tensile stress levels,
  • Durability.