Abstract: The present invention relates to a fibrous and/or filamentary construct, which can be used in a mixture which can be cementitious, or an aggregate exhibiting adverse affects on the components therein, to provide supplemental and reinforcing strength upon setting, and more particularly, to a unitized construct which comprises a plurality of oriented reinforcing fibrous and/or filamentary components combined with a circumferential retaining element, said circumferential retaining element providing temporary retention of the oriented reinforcing components until such point the unitized substrate is incorporated and subjected to mechanical agitation during preparation of an aggregate compound.