Abstract
This paper presents the research of the influence of chemical treatment with sodium hydroxide (NaOH) applied on bamboo fibers, to be used as concrete blocks reinforcement. The objective is to analyze the influence of the fibers on the mechanical properties of the cement composite. The research methodology used in this paper is of literary and experimental disposition, while the investigated plant is of the species Bambusa Vulgarise, which passed through chemical treatment with NaOH. Later, the fibers were characterized by optical microscopy and SEM. The characterization of the composite material was performed with bending tests. The results show the contribution of the reinforcement provided by treated fibers on the tensile strength during the bending of the concrete blocks, which evidence the importance to apply the chemical treatment. The study show that it is possible to use the treated bamboo fiber as a viable alternative on concrete blocks reinforcement, with superior resistance when compared to those of the bamboo in-natural.
Highlights
The global awareness about high energy consumption and consequent higher levels of pollution, have been increasing the number of academic researches about construction materials from natural sources, which could substitute industrialized products used on civil construction
CHEMICAL TREATMENT With the application of chemical treatment it was possible to calculate the percentage loss of mass, which is the factor of removal of hemicellulose and lignin present on the wall fibers
The study showed that the application of chemical treatment on the fibers can increase the property of mechanical resistance of concrete blocks
Summary
The global awareness about high energy consumption and consequent higher levels of pollution, have been increasing the number of academic researches about construction materials from natural sources, which could substitute industrialized products used on civil construction. One of the essential materials of civil construction is the steel, which is used in concrete composites acting as reinforcement for several structures. The cost of this material is one preponderant factor, as the scarcity of the mineral resources used on its manufacturing makes its price increasingly high. The use of bamboo fiber has been explored as a material with significant potential for structural applications (GHAVAMI e BARBOSA, 2007). Bamboo has specific weight approximately ten times lower than that of steel. In average, this property of the bamboo varies from 800 kg/m3 to 950 kg/m3 while steel has in average 7800 kg/m3
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