Abstract
The construction of coastal ports requires the use of materials that meet the demands of the marine environment, to prevent underwater concrete structures from cracking and spalling easily; basalt fiber is used to delay the expansion of concrete and prevent the formation of cracks. This research studies the behavior of concrete for prefabricated piles with Portland Cement Type I and basalt fibers added in 0.1%, 0.3% and 0.6%; the results indicate that the fiber is suitable for concrete, the slump decreases, the compressive strength increases for specimens cured in tap water and sea water, the relationship between resistances does not vary, and the depth of carbonation decreases.
Highlights
This research studies the behavior of concrete for prefabricated piles with Portland Cement Type I and basalt fibers added in 0.1%, 0.3% and 0.6%; the results indicate that the fiber is suitable for concrete, the slump decreases, the compressive strength increases for specimens cured in tap water and sea water, the relationship between resistances does not vary, and the depth of carbonation decreases
Constructions located in marine environments are exposed to attack by different agents, such as: sulfates, acids, seawater, chlorides, microorganisms, algae and mollusks, so they require the use of a concrete with greater durability [1], which presents low permeability to reduce the appearance of cracks and voids produced during its manufacturing and commissioning [2]
This research addresses the problem of surface cracking of precast reinforced concrete piles of tourist ports submerged in tidal zones; to do this, we study the chemical composition of the Basalt Fiber (BF), the slump, the compressive strength of the cured concrete in tap water and sea water, the relationship between the cured with sea water and cured with tap water, and the depth of carbonation
Summary
Constructions located in marine environments are exposed to attack by different agents, such as: sulfates, acids, seawater, chlorides, microorganisms, algae and mollusks, so they require the use of a concrete with greater durability [1], which presents low permeability to reduce the appearance of cracks (micro and macro) and voids produced during its manufacturing and commissioning [2]. Ports are built to generate economic development in society, but due to social needs for recreation or tourism they are remodeled, including stalls and modern ornaments [4], which increase existing loads, requiring that their supporting structural elements, such as the reinforced concrete piles, are in a good state of preservation to guarantee the strength of the structure These piles, being submerged under water, are affected by microorganisms, salts and chlorides, the latter producing an increase in cracks in the covering [5]; the same ones that cause cracks and spallings, leaving the reinforcing steel exposed [6] and affecting the load capacity due to the reduction of its cross section [7].
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