Compression resistance of repaired structural concrete elements after core extraction

Assessing Strength Variability of Concrete Structural Elements

The average in-situ strength of a member, expressed as the strength of an equivalent compression test result, will be lass than of a standard cast specimen of the same concrete, which has been properly compacted and moist-cured for 28 days. The extend of the difference will depend on construction techniques, but general patterns can be defined according to member type. Variations in concrete su...

Numerical investigation of GFRP bars contribution on performance of concrete structural elements

In this study, twenty glass fiber reinforced polymer (GFRP) reinforced concrete specimens were modelled using finite element method to predict the effect of GFRP compressive bars on the flexural strength and ductility of GFRP reinforced concrete beams. Also, the contribution of GFRP longitudinal rebars to the load-carrying capacity of reinforced concrete columns is determined. The concrete elas...

Shape Effect of Electrochemical Chloride Extraction in Structural Reinforced Concrete Elements Using a New Cement-Based Anodic System

This article shows the research carried out by the authors focused on how the shape of structural reinforced concrete elements treated with electrochemical chloride extraction can affect the efficiency of this process. Assuming the current use of different anode systems, the present study considers the comparison of results between conventional anodes based on Ti-RuO2 wire mesh and a cement-bas...

Precast Concrete Elements

Lattice-girder floor slabs and double-wall elements have been successfully used in building and industrial construction for decades. These precast elements of 50 – 70 mm thickness serve as permanent formwork for the subsequently added in-situ concrete creating a monolithic structure. The high prefabrication level allows the construction period to be significantly minimized. The main goal is the...

Chloride Resistance of Concrete