An abrasive segment , comprising: an inner segment portion comprising an inner circumferential wall, an outer circumferential wall, a leading radial sidewall extending between the inner circumferential wall and the outer circumferential wall , and a trailing radial sidewall extending between the inner circumferential wall and the outer circumferential wall opposite the leading radial sidewall; an outer segment portion spaced a radial distance, d, from the inner segment portion, the outer segment portion comprising an inner circumferential wall , an outer circumferential wall , a leading radial sidewall extending between the inner circumferential wall and the outer circumferential wall, and a trailing radial sidewall extending between the outer circumferential wall and the inner circumferential wall opposite the leading radial sidewall; and a central segment portion connected to the inner segment portion and the outer segment portion, the central segment portion including a leading radial sidewall and a trailing radial sidewall , wherein the leading radial sidewall of the central segment portion establishes an acute angle, α, with respect to the outer circumferential wall of the inner segment portion, characterized in that the leading radial sidewall of the central segment portion establishes further an obtuse angle, β, with respect to the inner circumferential wall of the outer segment portion, wherein the inner segment portion further comprises a first grinding face extending between the inner and outer circumferential walls , the leading radial sidewall and the trailing radial sidewall , wherein the first grinding face includes a first serrated portion extending at least partially over the first grinding face. an inner segment portion comprising an inner circumferential wall, an outer circumferential wall, a leading radial sidewall extending between the inner circumferential wall and the outer circumferential wall , and a trailing radial sidewall extending between the inner circumferential wall and the outer circumferential wall opposite the leading radial sidewall; an outer segment portion spaced a radial distance, d, from the inner segment portion, the outer segment portion comprising an inner circumferential wall , an outer circumferential wall , a leading radial sidewall extending between the inner circumferential wall and the outer circumferential wall, and a trailing radial sidewall extending between the outer circumferential wall and the inner circumferential wall opposite the leading radial sidewall; and a central segment portion connected to the inner segment portion and the outer segment portion, the central segment portion including a leading radial sidewall and a trailing radial sidewall , wherein the leading radial sidewall of the central segment portion establishes an acute angle, α, with respect to the outer circumferential wall of the inner segment portion, characterized in that the leading radial sidewall of the central segment portion establishes further an obtuse angle, β, with respect to the inner circumferential wall of the outer segment portion, wherein the inner segment portion further comprises a first grinding face extending between the inner and outer circumferential walls , the leading radial sidewall and the trailing radial sidewall , wherein the first grinding face includes a first serrated portion extending at least partially over the first grinding face. <EOS>