NATURAL AND SYNTHETIC, POPULAR AND WEIRD / floral · rich · woody
Concrete
Category
NATURAL AND SYNTHETIC, POPULAR AND WEIRD
Subcategory
floral · rich · woody
Origin
Volatility
Heart Note
Botanical
N/A — mineral/industrial accord
Odor Strength
Medium
Producing Countries
Egypt, France, India
Pyramid
Heart
Alkaline, mineral, dusty. Portland cement mixed with aggregate — the cold, chalky, slightly sulfurous smell of urban construction and modernist architecture.
Alkaline, mineral, dusty, with a faint sulfurous edge. Heavier and more alkaline than chalk, less dark than slate, with a specific construction-site quality. Wet concrete is sharper and more chemical; dry concrete is dusty and neutral. The smell is cold, inorganic, and unmistakably urban.
Evolution over time
Immediately
Immediately
Alkaline mineral burst, chalky and sharp
After a few hours
After a few hours
Settled dusty-mineral quality, cold and neutral
After a few days
After a few days
Faint mineral residue, dry and urban
The Full Story
Concrete as a fragrance note refers to the mineral-alkaline smell of Portland cement-based concrete — the most common building material on earth. Fresh concrete (wet) has a distinctly alkaline, chalky, faintly sulfurous smell from the calcium hydroxide and calcium sulfate released during hydration.
The smell of curing concrete comes from the exothermic hydration reaction: Portland cement (calcium silicates and aluminates) reacts with water, producing calcium hydroxide (strongly alkaline), ettringite, and heat. The calcium hydroxide gives concrete its characteristic high pH (12-13) and its sharp, mineral smell.
In perfumery, concrete belongs to the mineral-architectural note family. It carries brutalist architecture, urban landscapes, construction, and the specific atmosphere of buildings in progress. It is a urban of all fragrance notes.
Concrete is the second most consumed material on earth after water. Humans use approximately 30 billion tonnes of concrete per year — roughly 4 tonnes per person. The Roman Pantheon, built in 125 CE, has the world's largest unreinforced concrete dome (43.3 meters) and is still standing, demonstrating that Roman concrete (pozzolanic cement) was in some ways superior to modern Portland cement.
Extraction & Chemistry
Extraction method: Not a natural extract. Concrete (the building material) has no perfumery extraction. The note is composed from mineral, alkaline, and dusty-chalky materials. Note: in perfumery, 'concrete' also refers to the waxy semi-solid product of solvent extraction of flowers — an entirely different meaning from the building material.
Concrete is a conceptual mineral note used in urban, architectural, and brutalist-inspired compositions. Built from alkaline-mineral synthetics, chalky-dusty materials, and faint sulfurous modifiers. Functions as a background atmospheric element providing cold, urban, mineral texture. Pairs with asphalt, metal, and rain notes in city-themed compositions.
