Water engineering

Mortar systems for general civil engineering in water engineering applications

Repairing damaged concrete structures doesn’t just require modern, tested special systems in water engineering applications. The particular properties can generally only be achieved by using an innovative polymer technology.

The fields of application of StoCretec concrete repair products can include the following:
• Dam walls and weirs
• Reservoirs
• Sluices
• Penstocks
• Detention basins
• Wharfages
• Bridges and tunnels

When repairing hydraulic structures, the repair of old concrete represents a particular challenge. Dry-mix sprayed mortars based on state-of-the-art mortar technology demonstrate low water absorption with a low modulus of elasticity and are highly resistant to the effects of freeze-thaw cycles.

Lasting repair of hydraulic structures

The innovative StoCrete TS 126 and StoCrete TS 136 dry-mix sprayed mortars are tailored to the special characteristics of old hydraulic structures.

Hydraulic structures are subjected to enormous stresses. Locations that are exposed to the climate, mechanical deformations due to changing water levels, and abrasive stresses from solid materials conveyed in flowing water have a damaging effect on the building fabric. What’s more, chemically reactive elements dissolved in the water destroy the concrete or cause corrosion on the reinforcement.

StoCretec has developed the StoCrete TS 126 and StoCrete TS 136 dry-mix sprayed concretes specifically to repair hydraulic structures built with old concrete.

Using intelligent air-entraining technology to dissipate the explosive forces of ice in a controlled manner.

Old concrete structures are particularly challenging. These lower-strength concretes have a lower durability. Generally, they demonstrate higher capillary absorption and are more prone to weathering when attacked by frost. Water penetrates into the concrete and collects in the pores. If there is a frost, the water becomes ice.

This causes it to increase in volume by nine per cent. As a result, the volume of the ice exceeds the volume of the pore and destroys the cement matrix. After a short period of use, localised spalling will become apparent in the concrete. The damage gradually increases each time there is a frost. The planned concrete cover is destroyed and the reinforcement’s permanent protection against corrosion is put at risk. The surface becomes unsightly. Our StoCrete TS 126 and StoCrete TS 136 repair concretes were specially formulated to meet this challenge and feature a special air-entraining technology.

Here you will find more information on the lasting repair of old concrete and how the explosive forces of ice are dissipated in a controlled manner using intelligent air-entraining technology.

To the broschure [German] "Der Klügere schafft Platz."

Surface protection systems for civil engineering in water engineering applications

The open-pored structure that gives concrete its unmistakeable character makes it vulnerable to a whole host of influences related to the environment and use. To ensure effective protection and make the concrete more durable, various surface protection measures can be implemented that have been specially developed for the particular application.

For example, the StoConcrete Protect V rigid acrylate coating build-up is ideal for protecting concrete structures.

For all cracks in concrete members
When it concrete is used as a building material, cracks are a normal occurrence. They cannot be avoided completely even if great care is taken during the design and application phase. Cracks do not impair the serviceability or durability of concrete structures provided they are finely distributed and their widths do not exceed defined guide values.

When subjected to particular harmful substances or exceptional in-use conditions, as is the case in hydraulic structures in particular, it can however be necessary to close the cracks even if they are only small in width.

You will find suitable crack injection systems here