Otterbein Projects

Natural Hydraulic Lime

Neuschwanstein Castle, Germany

Neuschwanstein Castle was built in 1869 for the Bavarian King Ludwig II as an idealized idea of a knight's castle from the Middle Ages. However, the king lived only a few months in the castle, he died before the completion of the plant. Today Neuschwanstein is considered one of the most famous castles in the world and is one of the most famous sights in Germany.

As part of various refurbishment work to preserve this magnificent structure, our HYDRADUR ® NHL 5 and CALCIDUR ® NHL 2 hydraulic limescale were used.

These special binders are characterized by the fact that they harden from the air both by the chemical reaction with water and by the absorption of carbon dioxide. As a result, they have a high elasticity and a continuous, low-stress hardening course, whereby wall or plaster damage to historic buildings are effectively avoided.

Coliseum Rome

The Colosseum was between 72 and 80 AD and is the largest closed building of Roman antiquity. It is also the largest amphitheater ever built in the world. In ancient Rome, in the Coliseum, among other gladiatorial fights, trailing naval battles or animal hunts for entertainment and amusement of the citizens of the Roman Empire aligned. Today, the Coliseum is one of Italy's major landmarks and is a UNESCO World Heritage Site as part of Rome's ancient city.

During demanding refurbishment work to preserve the coliseum for posterity, our HYDRADUR ® NHL 5 hydraulic lime was used , which is predestined for the production of mortars according to a historical model, which have high elasticity and a continuous, low-tension hardening process. As a result, wall or plaster damage to the historic building can be effectively avoided.

Holy Sepulcher Jerusalem

The Church of the Holy Sepulcher in Jerusalem was built in the 4th century AD and, according to tradition, is located on the site of the crucifixion and the tomb of Jesus. The Church of the Holy Sepulcher is one of the largest sanctuaries of Christianity.

Since 2010, various parts of the Church of the Holy Sepulcher have been extensively renovated. In order to achieve the most authentic results, the responsible persons rely on our Naturally Hydraulic Limes HYDRADUR ® NHL 5 , CALCIDUR ® NHL 3,5 and CALCIDUR ® NHL 2. These high-performance binders are predestined for the production of high-quality mortars on the historical model , which have a high elasticity and a continuous, low-tension hardening course . As a result, wall or plaster damage to the historic building can be effectively avoided.

Dormition Monastery, Russia

The Holy Dormition Lavra Pskov is located about 340 kilometers south of St. Petersburg and 50 km west of Pskov near the border with Estonia. The monastery was founded in the middle of the 15th century by Russian Orthodox monks and is now considered a major spiritual center in Russia.

To preserve the magnificent buildings for posterity, the monastery was extensively restored in 2015. Our natural hydraulic lime CALCIDUR ® NHL 3.5 won the contract. Our Naturally Hydraulic Limes are predestined for the production of high-quality mortars after historical model , which have a high elasticity as well as a continuous, tension-free course of hardening . As a result, wall or plaster damage to the historic building can be effectively avoided.

Castle Peterhof, Russia

Peterhof Palace is a Russian palace complex, 30 kilometers west of St. Petersburg. Peterhof Palace was built by Peter I and expanded by his successors. It is considered "Russian Versailles" and since 1990 World Heritage Site by UNESCO.

During the masonry refurbishment of buildings on the grounds of Schloss Peterburg, our Naturally Hydraulic Limestones HYDRADUR ® NHL 5 and CALCIDUR ® NHL 3,5 as well as HISTOCAL ® Injection Mortar - M 5 - were processed, whereby the high demands of the Russian customers and processors are optimally taken into account could.

Stiftsruin Bad Hersfeld

The monastery ruin in Bad Hersfeld is the ruin of the collegiate church of the former abbey Hersfeld in Bad Hersfeld. Considered one of the largest Romanesque basilicas north of the Alps, it is today the largest Romanesque church ruin in the world. Today, it is, among other venues, the venue of the well-known Bad Hersfeld Festival.

In order to preserve the collegiate ruins for posterity, the monastery ruins will be restored from time to time. For this we used our Naturally Hydraulic Lime HYDRADUR ® NHL 5. Through the use of these high-performance binders, durable mortars can be produced based on historical models, which have a high elasticity and a continuous, low-tension hardening course, effectively preventing wall or plaster damage to the historic building.