Fibras de a？o em blocos de concreto: estudo para utiliza？？o em ambiente marítimo

the present article's main objective is to study the possibility of using steel fibers in concrete to be applied under the format of blocks for the containment of marine waves, searching to influence their mechanical resistance and lifetime. based on the success of utilizing steel fibers in concrete applied in sewage, a very corrosive environment, these fibers were also considered to be applied in the marine environment. concrete might be attacked even without direct contact with sea water because of the high amount of chlorine contained in salts diluted in air. a study was made based on lifetime tests for two years with concrete blocks either containing or not chlorine in its constitution. the concrete blocks were exposed to atmospheric condition and also to a wet-dry testing procedure in the presence of nacl to enhance the penetration of chlorine ions in the samples.