Unsourced material may be challenged and removed. A mason laying mortar on top of a finished course of blocks, prior to modern masonry brick block stone pdf the next course. Masonry is generally a highly durable form of construction. However, the materials used, the quality of the mortar and workmanship, and the pattern in which the units are assembled can substantially affect the durability of the overall masonry construction.
Concrete blocks, especially those with hollow cores, offer various possibilities in masonry construction. They generally provide great compressive strength, and are best suited to structures with light transverse loading when the cores remain unfilled. The use of material such as bricks and stones can increase the thermal mass of a building and can protect the building from fire. Masonry walls are more resistant to projectiles, such as debris from hurricanes or tornadoes. Extreme weather, under certain circumstances, can cause degradation of masonry due to expansion and contractions forces associated with freeze-thaw cycles. Masonry tends to be heavy and must be built upon a strong foundation, such as reinforced concrete, to avoid settling and cracking.
Masonry consists of loose components and has a low tolerance to oscillation as compared to other materials such as reinforced concrete, plastics, wood, or metals. A masonry veneer wall consists of masonry units, usually clay-based bricks, installed on one or both sides of a structurally independent wall usually constructed of wood or masonry. In this context the brick masonry is primarily decorative, not structural. There is typically an air gap between the brick veneer and the structural wall. In most climates this insulation is much more effective on the exterior of the wall, allowing the building interior to take advantage of the aforementioned thermal mass of the masonry.
This technique does, however, require some sort of weather-resistant exterior surface over the insulation and, consequently, is generally more expensive. This new type of masonry block uses special curvature to allow the masonry block to stabilize through self weight when constructed as a panel. The principal practice of this panel is to help dissipate external energy, primarily due to seismic loadings. The basic concept is to generate friction between each element of the panel through movements to dissipate energy. 2011 in the Advance Material Research Journal. This theory was based on principles of dry stack masonry wall construction, where energy dissipation depends significantly on the textural arrangement of the stones. The idea of SIM panel is to improve on the traditional reinforced masonry.
The design principal is to allow construction without the requirements of traditional reinforced masonry. When blocks are constructed as a panel within supporting columns, it is known as “In-fill panels”. Two types of SIM block are available, mechanical and topological. Topological can be described as masonry blocks containing specific curvature which allows the blocks to interlock with each other, while adding additional water-resistance properties. Each row of bricks is known as a course.
Bonds can differ in strength and in insulating ability. Vertically staggered bonds tend to be somewhat stronger and less prone to major cracking than a non-staggered bond. Masonry repair work done to a brick wall. The wide selection of brick styles and types generally available in industrialized nations allow much variety in the appearance of the final product. In buildings built during the 1950s-1970s, a high degree of uniformity of brick and accuracy in masonry was typical. In the period since then this style was thought to be too sterile, so attempts were made to emulate older, rougher work. Others may use antique salvage bricks, or new bricks may be artificially aged by applying various surface treatments, such as tumbling.
A crinkle-crankle wall is a brick wall that follows a serpentine path, rather than a straight line. They usually are much larger than ordinary bricks and so are much faster to lay for a wall of a given size. Surface-bonding cement is often pre-coloured and can be stained or painted thus resulting in a finished stucco-like surface. Generally, certain voids are designated for filling and reinforcement, particularly at corners, wall-ends, and openings while other voids are left empty. This increases wall strength and stability more economically than filling and reinforcing all voids. Typically, structures made of CMUs will have the top course of blocks in the walls filled with concrete and tied together with steel reinforcement to form a bond beam. The introduction of steel reinforcement generally results in a CMU wall having much greater lateral and tensile strength than unreinforced walls.