The Following is an excerpt from the Book "Patio and Stone" by Tom Wilhite on Bricks on page 30.
I always liked this summary and introduction to brick in Masonry:
Bricks has been made in basically the same way for thousands of years--- by firing a mixture of Clay and other materials in Kiln. Laid brick provides a handsome service that blends well with almost any architectural style. It's a versatile, time-tested material that can be used to floor a patio, Foreman Edge a path, or build Garden walls and beds. Brick is quite sturdy, and it lasts a long time.
Bricks are available in a wide variety of earthly colors, from nearly black through a wide range of brown, red, and tan fades to grey and white. Metals may be added to the clay to produce dark speckling, and special firing techniques can give a interesting variety of effects, such as a darker face or edge to each brick. Brand new brick in a solid color confers contemporary, refined look, while used brick-- or brick manufacturer with a more rustic finish-- rings and instant establish look to the garden. This type of finish includes irregularities formed by heat in the kiln or white staining called efflorescence. Landscape designer Cameron Scott says "I love using old, recycled brick, which really fits well with the character of some older houses."
Textures very too, but there are two general types used for landscaping: common brick has a rough, porous texture, while face brick has a more polished surface that is a bit too slippery for use on pass but makes a refined looking race or ethnic. When it comes to shape most bricks or roughly rectangular on their face shaped like elongated cube, though some types have rounded edges. Paver bricks are about as thick as standard bricks and are made to be set a top a concrete base. "Cored" bricks have holes that are useful for holding extra mortar when building a wall." "
Brick House Stone Masonry 309 Clarence St. London, Ontario N6B 2K2 (226) 781 - 1046