The result “Optimization of Multifunctional Mortar” describes an innovative, multifunctional mortar product that helps improve indoor air quality by combining moisture regulation and pollutant adsorption through natural and photocatalytic components.

Due to the recent changes in lifestyle, people spend more than 70% of their time indoors. Occupants are then potentially exposed to airborne pollutants like Volatile Organic Compounds (VOCs), anhydrides (NOx, SOx), and ozone (O3). These compounds can have both short- and long-term effects on human health and even cause the well-known Sick Building Syndrome (SBS). Moreover, non-adequate levels of Relative Humidity (RH) may have negative effects on the comfort and well-being of the occupants, since the optimal RH level is around 50%. 

To improve indoor air quality (IAQ) and create more comfortable and healthier environments new approaches have been found, such as the development of passive systems that can assist the active ones. In this regard, the tool is based on an innovative inorganic finish (Patent IT 102017000033750 – Multifunctional Mortar) that improves IAQ in terms of moisture buffer capacity (MBC) and depolluting ability enhanced by coupling unconventional adsorbent aggregates to photocatalytic TiO2 particles.  

The multifunctional mortar and the natural-based panels have been already installed in the Italian demo site located in Camerino. The monitoring system which permits to acquire and store VOCs and other pollutants levels, RH and temperature is working, and real-time data are visible in the LIS platform. 

The tool could be used by pre-mixers and precast panel producers, engineers specialized in indoor design and public authorities (e.g., municipalities) managing buildings. 

The multifunctional mortar is coupled to natural-based panels to improve the thermal comfort of occupants, regulate RH and adsorb VOCs levels in indoor environments. 

The tool has been already successfully tested at a pilot scale (TRL6). During the MULTICLIMACT project it will be tested in a real environment at the Camerino Italian demo case.