Prefaced (glazed) concrete unit masonry uses blocks manufactured by bonding a permanent colored facing (typically composed of polyester resins, silica sand and various other chemicals) to a concrete masonry unit, providing a smooth impervious surface. The glazed facings must comply with ASTM C 744, Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units, which contains minimum requirements for facing quality and dimensional tolerances. In addition, the unit to which the facing is applied must comply with ASTM C 90 when used in loadbearing applications. The glazed surface is waterproof, resistant to staining and graffiti, and highly impact resistant, as well as being resistant to many chemicals and bacteria. Special admixtures and mortars are available for use with glazed units that provide better stain, bacteria, and water penetration resistance. Glazed units are available in a variety of vibrant colors: pastels, earth tones, and even faux granite and marble patterns. They are often used for brightly-colored accent bands, or in gymnasiums, rest rooms, and indoor swimming pools where the stain and moisture resistant finish reduces maintenance. Kitchens and laboratories also benefit from the chemical and bacteria-resistant surface.
Molded-face concrete unit masonry is a scored concrete masonry unit which is manufactured with one or more vertical scores on the face to simulate additional mortar joints in the wall. Scored units reduce the perceived scale of the masonry while still allowing construction using full sized units.
Fluted concrete unit masonry has ribbed or fluted edges. Units typically have four, six, or eight ribs vertically aligned to form continuous segments in the finished wall. The fluted units can be smooth, split, or striated. Flutes can be produced to provide either a circular or rectangular profile. Fluted concrete masonry units can be specially fabricated to be water repellent, and are produced in an array of colors.
Fluted concrete masonry units are usually laid so that the flutes or ribs align vertically as they are placed. Masons can utilize different bond patterns, such as stack bond or one-third running bond, to align scores in adjacent courses. The bond pattern used will determine the load bearing capacity of the wall.
Exposed aggregate concrete unit masonry, also described as "burnished" or "honed", uses ground face concrete masonry units that are polished after manufacturing to achieve a smooth finish which reveals the natural aggregate colors. The units have the appearance of polished natural stone. The finished look of the ground surface can be altered by changing aggregate type and proportions. Often, specific aggregates will be used to enhance the appearance of the polished surface, while coatings are sometimes used to deepen the color. Ground face units are often scored to achieve a scale other than the conventional 8 x 16 in.
Sandblasted face units are CMU where sand (or abrasive) blasting is used to expose the aggregate in a concrete masonry unit, resulting in a "weathered" look.
Masonry anchors secure masonry to structural framing or supporting construction, such as a wall, floor, beam, or column. Individual ties, anchors, and inserts are available in galvanized steel, stainless steel and epoxy-coated steel. Building codes may determine the forces that need to be accommodated and the spacing of anchors.
Split-faced concrete unit masonry is an architectural concrete masonry unit that costs a bit more than a standard CMU. It is made from a mixture of Portland cement, water, aggregates, and admixtures such as coloring agents, air-entraining materials, accelerators, retarders, or water repellents. Once shaped, compacted, and cured, the solid or hollow concrete units are then split crosswise or lengthwise. This random splitting allows some of the aggregate to break through in various planes, providing a look similar to natural stone.
<强>人造石圬工下，有时也被称为培养的石头或薄石，是指多种合成铸结石被用作在将内部和外部应用的光洁度单板。石墙和组件早就投射的自然，温馨，和朴实的感觉。然而，与天然石材建造的费用限制了其使用的项目有大的预算和持久的愿望。但制造的石材，其逼真的设计元素，可以提供石的美观用更少的材料和劳动力成本和较小的结构的影响。
Cast stone masonry is a refined architectural concrete building unit, manufactured to mimic natural cut stone and used in unit masonry applications. Cast stone can be made from white and/or grey cements, manufactured or natural sands, carefully selected crushed stone, or well graded natural gravels. Mineral coloring pigments are added to achieve the desired color and appearance while maintaining durable physical properties which exceed most natural cut building stones. Cast stone can be made to appear nearly indistinguishable from natural cut limestone, brownstone, sandstone, bluestone, granite, slate, keystone, travertine and other natural building stones.
<强>干放置石是，毫无疑问，砖石的最早形式;它由简单堆叠的天然宝石，一个在另一个之上的，没有灰浆。作为石材切割工具开始被用于工作的石头，初干石匠开发铺设的石头，使结构更加稳定，耐候性的技术。Egypt's great pyramids are the largest and most recognized dry stone structures, but there are numerous examples of ancient dry stone masonry all around the world that are still stable and useful after hundreds or even thousands of years.
Architectural concrete unit masonry is used as an architectural finish for interior and exterior walls, partitions, terrace walls, and other enclosures. Decorative CMU with textures, patterns, or other special finishes may be chosen for aesthetic attributes. Some units are available with the same treatment or pattern on both faces, to serve as both exterior and interior finish wall material.
Concrete unit masonry is a form of masonry which uses prefabricated concrete blocks, including hollow or solid architectural concrete masonry units (CMU). To be considered solid, units must be at least 75 percent solid. Hollow concrete units are preferred because of the reduced weight, easier handling, and lower cost.Concrete masonry units are made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. CMU are molded using a relatively dry mix of cement and aggregates; they are compacted and consolidated using low-frequency, high-amplitude vibration, and then cured under controlled temperature and humidity. These units are suitable for both loadbearing and non-loadbearing applications.
Brick Masonry is one of the oldest known man-made building materials, dating back to around 8000 B.C. Modern clay face brick comes in numerous standard sizes, most in nominal 4" widths, with nominal lengths of 8" or 12", and heights ranging from 2" to 5-1/3". Actual dimensions are normally 3/8" less than the nominal size, which allows for the typical mortar joint thickness. The most common size, "modular brick," measures 3-5/8" wide by 2-1/4" high by 7-5/8" long. This modular dimension works so that three bricks match the height and two bricks match the length of a standard nominal 8" by 16" concrete block or concrete masonry unit (CMU).
Unit masonry, whether employing natural stone or manmade units, provides the designer with a broad variety of choices of materials, sizes, colors, and textures. Units may include solid or hollow clay brick, adobe, concrete block, glass block, structural clay facing tile, terra cotta, stone, or other special units. Masonry assemblies may be load-bearing or non-load-bearing, grouted or non-grouted, reinforced or non-reinforced, single- or multi-wythe. Whatever materials are used, the skill of the mason is key to a successful installation.
Masonry anchorage and reinforcing perform the critical function of adding strength to masonry, either by transferring forces to the structure or by directly contributing resistance to applied loads. These systems are usually concealed within the masonry and therefore must be selected to resist corrosion, which could lead to catastrophic failure. Replacement of materials built into or embedded in masonry work is a very expensive and disruptive process.