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10 Oct,
Cellular concrete consists of a mixture of water, cement, and pre-formed foam. Contractors and manufacturers sometimes refer to cellular concrete as foamed concrete. Because cellular concrete forgoes stone aggregate, and because the foam introduces a higher ratio of air, it has a much lower density than traditional concrete.
Cellular concrete possesses numerous benefits when it comes to certain types of building and restoration projects. Unfortunately, many people still fail to understand just what makes cellular concrete so special. This article seeks to increase your knowledge of the contemporary concrete world by outlining four key advantages of cellular concrete.
1. Lighter Weight
The defining feature of cellular concrete is its relatively high air content. The foam leaves behind evenly distributed cells of air in the hardened concrete, and the air may account for up to 80 percen t of cellular concrete's volume. That said, a contractor can carefully adjust the precise ratio of foam introduced to control the amount of air and end up with a desired density.
As you can imagine, the more air cellular concrete contains, the lighter it will be. Generally speaking, however, virtually all cellular concrete weighs less than its traditional equivalent. This characteristic gives it a distinct advantage when it comes to certain types of construction or repair tasks.
Cellular concrete allows builders to stay within strict weight management limits for certain types of buildings. Walls and floors constructed from cellular concrete place a much smaller load on a building's foundation, often allowing builders to construct taller structures. The light weight means it can even be used as a roofing material.
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2. Better Thermal Insulation
The high air content of cellular concrete also produces a drastic effect in terms of thermal insulation. Just as with density, insulating power relates directly to the proportion of air in the concrete &#; more air increases the insulating power. As a result, structures built using cellular concrete tend to exhibit much better energy efficiency.
Manufacturers test a building material's insulating power according to R-value Higher R-values indicate a greater degree of insulation. One inch standard concrete, which has a density of 150 pounds per cubic foot, has an R-value of just 0.07. Cellular concrete, at the extreme end of the spectrum, may have R-values as high as 2.0 per inch
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3. Improved Fire Resistance
All concrete possesses a natural degree of fire resistance. Yet not all concrete can withstand the same temperatures or for equal lengths of time. The same insulating properties that make cellular concrete such a great choice for energy efficiency also give it an improved ability to resist heat transfer, thus making it harder for fire to spread throughout a building.
Standard concrete that has been reinforced with rebar or other internal steel elements has a greater susceptibility to fire. As the heat from especially intense fires passes into the concrete, the metal rebar expands, creating internal stress. As a result, the concrete often succumbs to spalling damage.
To combat this weakness, concrete manufacturers often add monofilament polypropylene fibers to the mix. While effective, this strategy can drive up the cost of the concrete. The excellent insulating properties of cellular concrete offers an alternative way to resist spalling. Cellular concrete is also less likely to explode as the result of exposure to a high energy flame source.
4. More Cost-Effective
Most cellular concrete contains an ingredient known as fly ash, which promotes a greater degree of internal strength. Fly ash replaces some of the cement that would otherwise be used in the mix. This replacement tends to bring down the overall cost of the concrete, since fly ash is an industrial waste product that can be acquired for a fraction of the cost of cement.
Cellular concrete has become an increasingly popular building choice, thanks to its wealth of undeniable benefits. For more information about whether cellular concrete would make a good choice for your next construction project, please contact the pros at Jimenez Concrete Inc.
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