A limestone- and clay-based substance applied wet to bind together materials such as sand, gravel, brick and stone when it hardens. It is an ingredient in mortar and concrete. The term cement is often incorrectly used to mean concrete.
the bonding agent used to bond aggregates and create concrete. ertificate of occupancy (occupancy permit)- a document issued by the local building authority stating that a new residence is suitable for habitation. It is usually issued after the final inspection.
A building material made by grinding calcite limestone and clay to a fine powder which can be mixed with water and poured to set as a solid mass. Also used in making mortar or concrete. Coal Tar - Coal tar is a common ingredient used in the production of pavement sealer due to chemical and UV resistance properties. Coal Tar Emulsion - A pavement sealer consisting of coal tar, water, emulsifiers, and filler designed to protect and beautify asphalt pavement. Coal tar also provides oil and gasoline resistance.
Cement is the vital ingredient of concrete. Cement sheets refer to the sheets using cement and reinforcing fibres to form a flat lining sheet with amazing weather resistance. Fibro was the most common and in recent years, newer versions of these boards were developed with increased flexibility. Old sheet used to contain asbestos fibres as the main reinforcement and are not available on the market today.
In this context a quick-setting binder for making mortars and concretes. By far the most widespread cement is the Portland Cement (OPC) formed by grinding a clinker which has been prepared at high kiln temperatures from a mixture of clay and limestone. There are, however, other forms of cement including ënatural cementsí formed from naturally occurring nodules of calcareous clay (such as Septaria). A distinction between these and other hydraulic limes is that cements must be ground to a fine powder before they can slake.
A material or mixture of materials (without aggregate) which in a plastic state, possesses adhesive and cohesive properties and hardens in place. This term is often used incorrectly for concrete, e.g. a "cement" block for concrete block.
a powder consisting of alumina, silica, lime and other substances. It hardens when mixed with water and is used to bond casing to the walls of the borehole and to prevent fluids from migrating between permeable zones.
Modern Portland cement is the end product of a process by which extremely high temperatures are applied to finely ground materials-often basic elements of limestone, clay, and shale-containing four key elements: calcium, silica, aluminum, and iron.
Usually refers to portland cement which when mixed with sand, gravel, and water forms concrete. Generally, cement is an adhesive; specifically, it is that type of adhesive which sets by virtue of a chemical reaction.
In the most general sense of the word, cement is a binder, a substance which sets and hardens independently, and can bind other materials together. The name "cement" goes back to the Romans who used the term "opus caementitium" to describe masonry which resembled concrete and was made from crushed rock with burnt lime as binder. The volcanic ash and pulverized brick additives which were added to the burnt lime to obtain a hydraulic binder were later referred to as cementum, cimentum, cÃ¤ment and cement.
To fix the casing firmly in the hole with cement, which is pumped through the drill pipe to the bottom of the casing and up into the annular space between the casing and the walls of the well bore. After the cement sets (hardens) it is drilled out of the casing. The casing is then perforated to allow oil and gas to enter the well.
A putty or other compound that is used to weatherproof stained glass projects that are to be used for doors or windows. The cement is forced between the came and the glass. It also adds strength and keeps the glass from rattling.
Fluid cement is mixed at the surface, pumped to the bottom of a cased well, forced to flow around the lower end of the casing and up into the space between the casing and the borehole. When the cement solidifies (sets), it holds the casing in place, and provides support.