• Block or pavers containing XPERT 550 BF3 will have superior strength gain and Faster curing at all ages. • In most cases, a reduction in cement is possible when XPERT 550 BF3 is used in the concrete block or paver mix. • XPERT 550 BF3 will produce a block that has a more uniform texture and color. • Block containing XPERT 550 BF3 reduces wear and tear on mold-box liners and machine parts, while enabling a Faster cycling time of the molding machine. • Concrete block containing XPERT 550 BF3 will have sharper and more defined edges and corners, with less chipping. • XPERT 550 BF3 increases the density of block and pavers, thus increasing durability and lowering the rate of absorption.