Abstract
Early prevention methods in massive concrete structures to control the heat of hydration and, consequently, the development of cracks due to thermal expansion are important subjects, since these cracks may compromise structural integrity. In the present study, the sugarcane residues in massive concrete were used in order to investigate the reduction in the heat of hydration, the thermal expansion resistance, and also the fresh and mechanical properties of the concrete. The results showed that, by adding 2.0% of bagasse fiber and 5.0% of pozzolanic material to the concrete, the heat of hydration was reduced, and the strain due to the thermal expansion was smaller than the control mixture. Moreover, the compressive, flexural, and split tensile strength increased in comparison to the control mixture.
Highlights
The reaction between water and cement in massive concrete structures like dams, pavements and piers produces heat and increases the temperature of the concrete [1,2]
Sugarcane residues were used in place of sand in order to investigate the behavior of the cement hydration heat and, to evaluate the potential resistance these residue materials have against the generation of cracks due to thermal expansion in massive concrete
The bagasse fibers were soaked in a solution of 5% Ca(OH)2 for 24 h [23,24]
Summary
The reaction between water and cement in massive concrete structures like dams, pavements and piers produces heat and increases the temperature of the concrete [1,2]. Several previous researchers have tried to reduce hydration heat by replacing a certain amount of cement with pozzolanic materials, such as silica fume, fly ash, and oil palm fuel ash Their results show that, when a certain amount of these materials is used in place of cement, it is possible to decrease the temperature of the concrete [6,7,8]. Sarabi et al used waste turnery steel fibers in massive concrete in order to control the generated cement hydration heat and, the potential of cracking due to the thermal expansion. Sugarcane residues were used in place of sand in order to investigate the behavior of the cement hydration heat and, to evaluate the potential resistance these residue materials have against the generation of cracks due to thermal expansion in massive concrete
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