Research into glue materials for repairing the cross-section of RC beams
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Czestochowa University of Technology |
Publication date: 2020-02-28
BoZPE 2019;(2):63–68
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ABSTRACT
In this article, the results of glue material regarding concrete connections between existent
and new concrete bonds are presented. The basic experimental studies into selecting the
optimal bonding layer involved testing 100 × 100 × 100 mm concrete cubes. These cubes
modeled so-called “old” concrete constructions. Because most of the currently used
reinforced concrete structures that require reinforcement or restoration were made decades
ago, most of them do not contain chemical additives and multi-fractional concrete, so the
concrete composition was adopted in the proper way, namely ordinary heavy concrete
in 1970-1980. As a result of the experimental testing of concrete specimen restoration
by means of a clamp arrangement, it is established that the maximum compatible work of
“old” and “new” concretes is ensured by the use of bonding layers of specially modified
mineral materials and the use of concretes using superplasticizers and a selection of their
fractional composition.