Abstract
Today, the need for structural strengthening is more important than ever. Flexural strengthening with textile reinforced concrete (TRC) is a recommendable addition to already proven methods. In order to use this strengthening method in construction practice, a design model is required. This article gives a brief overview of the basic behavior of reinforced concrete slabs strengthened with TRC in bending tests as already observed by various researchers. Based on this, a design model was developed, which is presented in the main part of the paper. In addition to the model, its assumptions and limits are discussed. The paper is supplemented by selected application examples to show the possibilities of the described strengthening method. Finally, the article will give an outlook on open questions and current research.
Highlights
Strengthening of Concrete Buildings—Why and How in the past decades, the world population has grown rapidly and will continue to do so according to unanimous forecasts
References [7,8,9,10,11,12,13,14,15,16], or Supplementation of additional components such as external tendons, e.g., References [17,18]. Another method that has become increasingly established over the past 20 years is strengthening with textile reinforced concrete (abbreviated: TRC; known as textile reinforced mortar, abbreviated: TRM, or fibre-reinforced cementitious matrix composites) [19,20,21,22,23,24]
A similar procedure was chosen for the calculation of the flexural strengthening with TRC
Summary
In the past decades, the world population has grown rapidly and will continue to do so according to unanimous forecasts. E.g., References [3,4,5], Glued or notched steel lamellas, e.g., References [6,7,8,9], Glued or notched lamellas/sheets made of fibre-reinforced plastics (abbreviated: FRP), e.g., References [7,8,9,10,11,12,13,14,15,16], or Supplementation of additional components such as external tendons, e.g., References [17,18] Another method that has become increasingly established over the past 20 years is strengthening with textile reinforced concrete (abbreviated: TRC; known as textile reinforced mortar, abbreviated: TRM, or fibre-reinforced cementitious matrix (abbreviated: FRCM) composites) [19,20,21,22,23,24]. In our experience, there is a great need for flexural strengthening measures in building practice compared to the other possibilities
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