Sustainable Solutions

Due to the large numbers required and heavy weight, tunnel segments are almost always produced close to the tunnel portal in specially installed precasting facilities. They have to meet high accuracy specifications. Heavy steel formwork is therefore the norm. Because striking takes place after only 5 – 6 hours and the concrete must already have a compressive strength of >15 N/mm², accelerated strength development is essential. There are several methods for this. In the autoclave (heat backflow) process, the concrete is heated to 28 – 30 °C during mixing (with hot water or steam), placed in the form and finished.

Sustainability and resource efficiency are key topics in the concrete industry, also since cement industry is responsible for about 6-8% of the global carbon emissions and concrete production uses large amounts of water and aggregates.

Sika provides the gypsum industry with tailor-made additive solutions for a cost-effective wallboard production based on innovative technologies like ViscoCrete® and Retardan®.

Is there a fast way to fix fatigue damaged steel bridges?

The world is running out of sand. However, Sika has the solutions to solve this problem in the construction industry. Sand covers much of the earth’s surface, but sand isn’t just sand. In the industrial world, it’s an “aggregate,” a category that includes gravel, crushed stone, and various recycled materials. Natural aggregate is the world’s second most heavily exploited natural resource after water, and for many uses the right kind is scarce or inaccessible.