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Begin exploring here. Choose tags, product lines and years to find the content you are interested.
![Matanza-Riachuelo Basin in Buenos Aires (Argentina)](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/matanza-riachuelo-argentina/thumbnail_bacino-matanza-riachuelo_bis.tmb-realtamape.webp?Culture=en&sfvrsn=c73eed8e_4)
Focus
Underground constructions
Projects
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1/31/2023
Matanza-Riachuelo Basin in Buenos Aires (Argentina)
Technical and environmental challenges for tunnelling work using EPB-TBM technology.
![Waterproofing systems for tunnels](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/sistemi-impermeabilizzanti/sistemi-impermeabilizzanti-thumbnail.tmb-realtamape.webp?Culture=it&sfvrsn=c337f08e_1)
Focus
Underground constructions
Products
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1/30/2023
Waterproofing systems for tunnels
Spray-applied polymeric membranes and synthetic membranes for a perfect result in all types of jobsites.
![Underground powerlines in Saint-Denis (France)](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/saint-denis-underground-powerlines/thumbnail.tmb-realtamape.webp?Culture=en&sfvrsn=f649538e_10)
Focus
Underground constructions
Projects
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1/29/2023
Underground powerlines in Saint-Denis (France)
The project - the first of its kind in France – involves boring out tunnels in a highly built-up area with road, rail and river infrastructures.
![Polyfoamer Eco Line](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/linea-polyfoamer/polyfoamer-thumbnail5b6f4092-3495-4813-bf78-e66e65606ae6.tmb-realtamape.webp?Culture=it&sfvrsn=8b94c08e_1)
Focus
Underground constructions
The expert's opinion
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1/28/2023
Polyfoamer Eco Line
Soil conditioning admixtures combine technical and environmental performances during EPB-TBM works.
![Cavo Redefossi sewer](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/redefossi/thumbnail_redefossi.tmb-realtamape.webp?Culture=en&sfvrsn=6e6f4c8e_10)
Focus
Underground constructions
Projects
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1/27/2023
Cavo Redefossi sewer
A bespoke fibre-reinforced mortar employed for consolidating a masonry canal used as sewer.
![Repair work on sewer pipes](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/bovassi-fogne/1_bovassi-mapei-fogne_thumbnail_5.tmb-realtamape.webp?Culture=en&sfvrsn=bd2a0a8e_8)
The expert's opinion
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1/27/2023
Repair work on sewer pipes
From the Mapei laboratories: specific products for any type of degradation.
![M4 Metro Line, Milan (Italy)](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/m4-milano/thumbnail.tmb-realtamape.webp?Culture=en&sfvrsn=6c07528e_10)
Focus
Underground constructions
Projects
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1/26/2023
M4 Metro Line, Milan (Italy)
Admixtures for concrete, waterproofing membranes, and products to install ceramic tiles and stone materials for a new metro line focused on sustainability.
![Our role as tunnelling
and excavation facilitators](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/dal-negro/thumbnail.tmb-realtamape.webp?Culture=en&sfvrsn=a6f0538e_10)
Focus
Underground constructions
Interviews
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1/26/2023
Our role as tunnelling and excavation facilitators
The strategy of the Group for this sector is to combine effective application with environmental compatibility.
![Engineering ability and creativity: the high profile of Italian knowhow](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/174/pelia---capacità-ingegneristiche/thumbnail.tmb-realtamape.webp?Culture=en&sfvrsn=2b0f4c8e_10)
Focus
Underground constructions
Interviews
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1/25/2023
Engineering ability and creativity: the high profile of Italian knowhow
All around the world Italian tunnelling experts have demonstrated unrivalled expertise and flexibility when overcoming varying and unpredictable underground conditions.
![Marco Squinzi: "On the road to sustainability"](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/squinzi.tmb-realtamape.webp?Culture=en&sfvrsn=ef165a88_1)
Focus
Concrete & Sustainability
Interviews
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9/20/2022
Marco Squinzi: "On the road to sustainability"
Marco Squinzi, CEO of Mapei: our contribution to low carbon footprint concrete.
![Grand Paris Express](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/171/grand-paris-express/grand-paris-express-thumbnailfb4da28379c562e49128ff01007028e9.tmb-realtamape.webp?Culture=en&sfvrsn=3475178f_9)
Focus
Costruzioni in sotterraneo
Projects
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8/4/2022
Grand Paris Express
Mapei supplied solutions for underground works and installing ceramic tiles in the stations. This maxi urban mobility project is scheduled to be completed in 2030.
![Bridge over the River Po along the A13 Motorway](https://cdnmedia.mapei.com/images/realta-mapei-images--new-/171/ponte-sul-po/thumbnail_ponte-po_2023-ok.tmb-realtamape.webp?Culture=en&sfvrsn=dcfcf98e_2)
Projects
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7/25/2022
Bridge over the River Po along the A13 Motorway
This bridge built around 50 years ago was the focus of important strengthening and repair work