PUZZOLAN Meaning and
Definition
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Puzzolan is a type of naturally occurring volcanic ash or rock residue that possesses cementitious properties when combined with water. It is predominantly composed of finely powdered silica, alumina, iron oxide, and other minerals. The term "puzzolan" is derived from the Latin word "puzzolana," named after the town of Pozzuoli near Naples, Italy, where the substance was initially discovered and extensively used in ancient Roman construction.
In the field of construction and engineering, puzzolan is considered a supplementary cementitious material and is often employed as a partial replacement for Portland cement in the production of concrete. Its incorporation enhances the strength and durability of concrete, improves workability, and reduces the permeability of the material. Puzzolan reacts with calcium hydroxide, a byproduct of cement hydration, to form additional hydration products, resulting in increased compressive strength, reduced heat of hydration, and enhanced resistance to chemical attack and chloride ion penetration.
Puzzolan is commonly used in a wide range of infrastructure projects, including buildings, bridges, dams, and highways, due to its cost-effective nature and sustainable qualities. It not only reduces the overall demand for cement production, thus minimizing carbon emissions, but also contributes to the efficient utilization of industrial byproducts. Additionally, its use promotes the conservation of natural resources.
Overall, puzzolan serves as a valuable addition to the construction industry, providing an environmentally friendly alternative for enhancing the performance and longevity of various concrete structures.
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See pozzuolana and pozzolana.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for PUZZOLAN
Etymology of PUZZOLAN
The word "Puzzolan" has its roots in the word "Pozzolan", which comes from the Latin term "Puteolanus", meaning "of or pertaining to Pozzuoli". Pozzuoli is a city near Naples, Italy, where a specific volcanic ash called "pozzolana" was widely used as a construction material by the ancient Romans. This volcanic ash, when mixed with lime, exhibits hydraulic properties, making it an effective additive for the production of concrete and mortar. Over time, the word "Pozzolan" evolved into "Puzzolan" or "Puzzolanic", referring to materials that exhibit similar characteristics to pozzolana, regardless of their geographical origin.
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