Applications in Construction
Solutions for sustainable and durable construction materials
High-Performance Concrete
Supplementary pozzolan as a partial replacement for Portland cement. Reduces permeability; early strength tends to drop, while 28-day strength stays close to that of the reference concrete (Shekarchi et al., 2023).
Improved Mortar
Pozzolanic addition in mortars. Requires adjusting water or using a plasticizer, as it reduces workability (Alexa-Stratulat et al., 2024).
Warm-Mix Asphalt
Additive that releases water from its structure at mixing temperature and foams the binder, allowing lower production and compaction temperatures for the asphalt mix (Woszuk & Franus, 2017). In one study, pre-wetted clinoptilolite, at around 1%, acted as a foaming agent (Woszuk & Franus, 2016).
Filler in Warm-Mix Asphalt
Tuff with about 75% clinoptilolite partially replaced limestone filler without impairing the properties of the asphalt mastic (Woszuk et al., 2019).
* Reference doses. They may be reviewed by qualified professionals, such as veterinarians, agronomists, animal scientists, chemists and food engineers, among others, since professional titles and qualifications vary between countries; local regulatory bodies may also set their own limits.
Technical Specifications for Construction
| Form | Powder |
| Pozzolanic Activity | Natural pozzolan (activity can be assessed by testing, NBR 5752) |
| Bulk Density | 0.6-0.8 g/cm³ |
| pH | 7.0-8.0 |
| Reaction to Fire | Non-combustible (inorganic mineral; melting ~1300 °C) |
| Water Absorption | 42-50% |