Heat build-up and surface wear shorten pavement life and raise energy demand for cooling and lighting. Anorthosite from Gudvangen reduces surface temperature, increases strength and supports longer-lasting, lower-emission roads.
ASPHALT
Lower Surface Temperatures
The bright, low-iron surface reflects more sunlight, keeping asphalt up to 10 °C cooler under direct sun.
ASPHALT
Longer Pavement Life
Lower heat and greater mineral stability reduce rutting, oxidation and binder ageing — extending service life.
ASPHALT
Energy and Safety Gains
Almost pure plagioclase means every batch behaves the same. Simpler batching, less dust and steadier fibre output.
ASPHALT
Cleaner and More Sustainable Mixes
Gudvangen anorthosite replaces darker fillers like basalt or dolomite, lowering overall emissions and improving recyclability.
Property / Parameter | Anorthosite (Gudvangen) | Basalt | Limestone (CaCO₃) |
|---|---|---|---|
Colour / Reflectivity | Bright, high reflectivity (light albedo) | Dark, absorbs heat | Light grey, moderate reflectivity |
Fe₂O₃ + TiO₂ Content | Very low (< 0.5 %)* | High (5–10 %) | Low (< 1 %) |
Thermal Stability | Stable > 1 000 °C | Stable > 1 000 °C | Decomposes > 800 °C |
Binder Compatibility | Excellent, non-reactive | Good | Good |
Surface Temperature Effect | Keeps asphalt measurably cooler under sun | Heats quickly | Moderate |
Durability | High — stable chemistry and low binder ageing | High, but absorbs more heat | Moderate |
Environmental Impact | Low — electric mining, sea transport | Moderate — quarrying | Moderate — calcination CO₂ |
Visual / Aesthetic Use | Ideal for bright or urban surfaces | Industrial, dark tone | Acceptable for lighter mixes |
* After on-site magnetic separation.
FEATURES
Designed to Endure. Built to Reflect.
Gudvangen anorthosite delivers the brightness and stability that keep pavements cooler and performance high — from urban streets to heavy-duty highways.
Gudvangen anorthosite contains less than 0.5 % iron and has a bright, plagioclase-rich surface. Its natural reflectivity can significantly lower surface heat build-up compared to dark basalt or dolomite fillers.
The mineral structure remains stable at temperatures above 1000 °C, helping prevent binder ageing and microcracking during production and paving.
A homogeneous mineral texture ensures even dispersion in the binder, supporting uniform compaction and predictable mix performance.
Laboratory studies indicate that light-coloured, thermally stable fillers can reduce rutting and ageing under heavy traffic and high temperatures — a performance trend supported by the composition of Gudvangen anorthosite.
Produced in controlled fractions — from ultra-fine powders to coarse aggregates — ensuring consistent quality and predictable performance for every industrial process.
The Gudvangen site connects directly to deep-water shipping routes, providing efficient, low-emission bulk transport to industry across Europe.
Get in Touch
Build Roads That Last — and Last.
Our specialists can help you replace darker fillers with a cleaner,
more consistent mineral source.
