{"id":5687,"date":"2026-07-09T19:38:13","date_gmt":"2026-07-09T18:38:13","guid":{"rendered":"https:\/\/e-station-groupe.fr\/?page_id=5687"},"modified":"2026-07-21T17:20:37","modified_gmt":"2026-07-21T16:20:37","slug":"bitume-oxyde-85-25-115-15","status":"publish","type":"page","link":"https:\/\/e-station-groupe.fr\/en\/bitume-oxyde-85-25-115-15\/","title":{"rendered":"Oxidised bitumen 85\/25 and 115\/15: waterproofing and industrial applications"},"content":{"rendered":"
\"Bitume
<\/div>
Energy trading \u00b7 Bitumen<\/span>

Oxidised bitumen 85\/25 and 115\/15 : waterproofing<\/span> and industrial applications<\/h1>

Hard grades with a high softening point, dedicated to waterproofing and industrial uses. E-Station supplies the 85\/25 and the 115\/15 in drums or in bulk, with a certificate of analysis and guaranteed delivery.<\/p>Request a quotation \u2192<\/a><\/div><\/div>

Oxidised bitumen is not a road bitumen. It is an industrial product made by blowing hot air through bitumen: oxidation makes it harder, more heat-resistant and almost immune to creep. It is not used in asphalt mixes; it is used where the bitumen must stay in place \u2014 roofing, waterproofing membranes, insulation, industry.<\/p>

How to read 85\/25 and 115\/15<\/h2>

The naming of oxidised bitumen is the reverse of road grades: the first number is the softening point (in \u00b0C), the second is the penetration (in tenths of a mm).<\/p>

\u2713<\/span>85\/25<\/strong> : softening point around 85 \u00b0C, penetration around 25. The most common oxidised grade.<\/span><\/div>
\u2713<\/span>115\/15<\/strong> : softening point around 115 \u00b0C, penetration around 15. Even harder, for applications exposed to high temperatures.<\/span><\/div>

For comparison, a road bitumen 60\/70<\/a> softens at around 49-56 \u00b0C: a 115\/15 oxidised grade withstands more than double before deforming.<\/p>

Applications<\/h2>
\u2713<\/span>Roof waterproofing membranes and sheets<\/span><\/div>
\u2713<\/span>Waterproofing of foundations and buried structures<\/span><\/div>
\u2713<\/span>Pipe coatings and linings<\/span><\/div>
\u2713<\/span>Industrial applications: insulation, bituminous paints, mastics, automotive and electrical industries<\/span><\/div>

Packaging<\/h2>

Oxidised bitumen ships solid and cold: 25 to 50\u00a0kg kraft or polyamide bags on pallets, cartons, or drums. This is a major logistical advantage over road bitumen: no temperature maintenance, simple handling, storage with no dedicated installation.<\/p>

Checkpoints at purchase<\/h2>
\u2713<\/span>Cargo certificate of analysis: softening point and penetration measured, not a generic data sheet.<\/span><\/div>
\u2713<\/span>Packaging suited to the destination climate: in high heat, bags can stick together; siliconised packaging or drums prevent the problem.<\/span><\/div>
\u2713<\/span>Independent pre-shipment inspection whenever the volume justifies it.<\/span><\/div>
\u2713<\/span>Incoterm and payment: same rules as road bitumen \u2014 CIF for a first purchase, letter of credit<\/a> documentary. See also the logistics and Incoterms guide<\/a>.<\/span><\/div>

Industrial applications<\/h2>

Unlike road bitumens, the oxidised grades 85\/25 and 115\/15 are sought after for their hardness and thermal stability. They are used above all for waterproofing and protection, in construction as well as in industry.<\/p>