A method of reinforcing an external surface of a structural member
including the steps of applying to a surface a fiber reinforced polymer
system, and curing or hardening the polymer system. The polymer system is
characterized by including a single-phase homogenous system before curing
or hardening and becoming a two-phase system upon curing. The polymer
system results in, when cured, a structural polymer including a continuous
phase and an elastomeric polymer discontinuous phase.