TEKNOLOGI PERBAIKAN STRUKTUR BETON

Abstract

Concrete structure are designed to be able for providing an optimum service towards influences or forces both from the outside and also from inside of the structure. These influences and forces are the caused, which the structure will result in a failure such as cracking, concrete degradation, and reinforcement corrosion. Concrete cracking are consist of hair cracks and structural cracks. Hair cracks are most likely caused from concrete drying process, while structure cracks are mostly caused by errors on planning and also because of poor implementation. Concrete degradation is the process of reduction in concrete strength, which is increasingly lower than its concrete capacity. Reinforcement corrosion is caused from the process of concrete weathering around the reinforcement, which directly influence the dimension of the reinforcement. To implement concrete structure refinement technology, detection, observation, evaluation, and analysis are required to be done. Wherein the first indication is emphasized on concrete cracking, whether it was a new or old cracks and the type of the cracks. Aside from that concrete weathering also needs to be checked. The instruments used are sound test, rebound hammer, and ultrasonic pulse velocity test. To determine crack width, crack compactor, brittle liquid coating and linear variable differential transformer are used. Here strength of the concrete also needs to be determining by hammer test and core drill system. Concrete structure refinement technology, aside from considering the mean of its improvement, is also highly dependent on the damage. The aims of this technology are to increase the capacity and improve the performance of the structure. Aimed at concrete weathering refinement, the damage part is removed for then replaced with new concrete mixture. The substitute concrete can be from dry packing, mortar, grouting, shot crating, and pre packed concrete. For the active cracks type, the technologies to be used are painting and concrete injection. Similarly if the analysis result is require replacing the reinforcement, replacement should be performed including the possibility of adding concrete reinforcement.