compatibility of ultra high performance concrete as repair material

UHPC formulations and provides a self-healing capacity for microcracks (Denarié et al.2005).Figure 2.3 Dissipated power and degree of hydration of the RPC sample as a function of time. Morin et al.(2001)2.1.3.2 Mechanical PropertiesUHPC is an advanced cementitious material with remarkable mechanical properties:shows strain-hardening behavior under uniaxial tension and compression strength greaterthan 18 ksi and tensile strength over 0.8 ksi without heat treatment (Graybeal 2006).These characteristics make possible to considerably reduce the cross section of thestructures, upon significantly decreasing the self-weight of the structures. Figure 2.4shows clearly this material reduction that can be achieved by using UHPC.10