In yet a further embodiment, {HEAD ~ the composite} has {TAIL ~ an initial tensile strength} of at least 250 MPa and retains at least 75% of the initial tensile strength for at least 8 weeks 
has
In yet a further embodiment , { HEAD ~ the composite } has { TAIL ~ an initial tensile strength } of at least 250 MPa and retains at least 75 % of the initial tensile strength for at least 8 weeks
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH