Reinforcing structures with spray mortar and carbon fiber grid

At a strengthening increase of 170 %, very high fire resis-tance and simple application, the combination of “Sto S&P Armo spray mortar” is well suited for reinforcing structures – both technically and economically. The system is also suitable for upgrading the loadbearing capacity of existing structures. Stocretec presented the building system for reinstating or increasing the structural loadbearing capacity at the BAU trade fair in Munich to the trade public.

With the Sto S&P Armo system it is now possible to reinforce loadbearing structures with a polymer-modified spray mortar and the grid of carbon fibers and glass embedded in it. This system combines two completely different products: For one, the Sto S&P Armo spray mortar of performance class M3, which, due to its mechanical properties takes up and transmits very high forces and, secondly, the grid that absorbs the tensile forces.

Decisive for the high functionality of the system is the mechanical bond of the materials. A reactive coating of the carbon fiber grid and the addition of the reaction partners in the mortar system improve the mechanical bond better than other systems.

High fire resistance with low mortar cover

The material-specific properties of the system, moreover, provides very high fire resis-tance at a mortar cover of only around 20mm. This makes it possible to largely follow the contours of the structural member. A range of woven grids is available for optimizing application and costs. Here, carbon fibers, into which the tensile forces are introduced, are only used in direction of the grid. The application of the Sto S&P Armo system is as a rule possible where spray mortar can be applied to a member. Processing, being quick and simple, is cost-efficient as well: the mortar is sprayed on in two layers, with the grid embedded in-between.

Related articles:

Issue 2013-08 Stocretec

M3-mortar for concrete repair

The continuously increasing loading of structures resulting from the effects of weathering and pollutants is adding importance to concrete repair. The choice of a suitable concrete substitute system...

Issue 2019-11 STOCRETEC

Structurally effective concrete replacement systems

For his projects, the planning engineer determines the principles and procedures required for the repair of each building component. In this regard, he evaluates whether it is a structural repair. If...

Issue 2013-02 StoCretec GmbH

For inclined matters: M3 Mortar TG 114

When it comes to structural repairs of concrete structures subjected to severe stresses (as trafficable ramps), only stable PCC I mortars of stress class M3 come into question. StoCrete TG 114 in the...

Issue 2019-07 STOCRETEC

Saving time in repairing concrete

Ensuring the function of concrete structures and retaining their aesthetics – quickly, economically and reliably. Because the universal mortar StoCrete SM requires no bonding course, it can save up...

Issue 2016-06 StoCretec

StoCryl: Protecting concrete and keeping it dry

Sooner rather than later, day-to-day environmental exposure will lead to damage to concrete or reinforcing steel. Water and pollutants dissolved in it pose a particular threat: after penetration into...