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Sakrete makes products specially formulated for anchoring items such as bolts or railing as well as for cement mixes for setting fence posts.
Anchor Cement is a fast-setting, general purpose grouting material designed to anchor bolts or railings into concrete for a super tight grip.
Fast Set Cement Mix is formulated for setting fence posts quickly and easily. Simply pour the mix into the hole and add water. The product sets in minutes, allowing fence to be hung the same day.
Anchor Cement is a fast-setting material designed to securely anchor bolts or railings in concrete. NOTE: Product will set within 20 minutes.
Easily figure out how much concrete is required with this concrete calculator
Some history of Concrete from Wikipedia:
Concrete is a composite construction material composed primarily of aggregate, cement and water. There are many formulations that have varied properties. The aggregate is generally a coarse gravel or crushed rocks such as limestone, or granite, along with a fine aggregate such as sand. The cement, commonly Portland cement, and other cementitious materials such as fly ash and slag cement, serve as a binder for the aggregate. Various chemical admixtures are also added to achieve varied properties. Water is then mixed with this dry composite which enables it to be shaped (typically poured) and then solidified and hardened into rock-hard strength through a chemical process known as hydration. The water reacts with the cement which bonds the other components together, eventually creating a robust stone-like material. Concrete has relatively high compressive strength, but much lower tensile strength. For this reason is usually reinforced with materials that are strong in tension (often steel). Concrete can be damaged by many processes, such as the freezing of trapped water. Concrete is widely used for making architectural structures, foundations, brick/block walls, pavements, bridges/overpasses, motorways/roads, runways, parking structures, dams, pools/reservoirs, pipes, footings for gates, fences and poles and even boats. Famous concrete structures include the Burj Khalifa (world's tallest building), the Hoover Dam, supporting structures for the Panama Canal and the Roman Pantheon. Concrete technology was known by the Ancient Romans and was widely used within the Roman Empire. After the Empire passed, use of concrete became scarce until the technology was re-pioneered in the mid-18th century. The environmental impact of concrete is a combination of negative and positive effects; the manufacture of concrete certainly releases large quantities of carbon dioxide, but concrete structures can have a long service life. Furthermore, concrete has a high thermal mass and very low permeability, so it is suitable for energy efficient housing. Also, recycling when concrete structures are demolished, is increasingly common.
