Study on Mechanical Properties of Concrete Using Basalt-Based Recycled Aggregate and Varying Curing Conditions

To replace porous basalt, the mechanical properties of concrete with recycled resources and durability improvement were analyzed in this study. The analysis was based on the quality improvement of recycled aggregate, use of fly ash, and changes in curing conditions. Basalt aggregate (BA) with a 3% w...

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Bibliographic Details
Published in:Materials 2022-06, Vol.15 (13), p.4563
Main Authors: Choi, Hong-Beom, Park, Jin-O
Format: Article
Language:English
Subjects:
Aggregates
Basalt
Cement
Compressive strength
Concrete
Concrete aggregates
Concrete properties
Curing
Drying
Durability
Equivalence
Experiments
Fly ash
Mechanical properties
Modulus of elasticity
Natural resources
Physical properties
Shrinkage
Steam curing
Strain gauges
Test methods
Water absorption
Water reuse
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Summary:To replace porous basalt, the mechanical properties of concrete with recycled resources and durability improvement were analyzed in this study. The analysis was based on the quality improvement of recycled aggregate, use of fly ash, and changes in curing conditions. Basalt aggregate (BA) with a 3% water absorption, raw recycled aggregate and basalt (RRA), and improved recycled aggregate and basalt (PRA) were the main experimental variables. As PRA was applied to concrete, the compressive strength was lower than that of the specimen comprising BA in the normal strength region, but the modulus of elasticity (22.9 GPa) was equivalent or higher. The initial drying shrinkage increased because of the use of basalt-based recycled aggregate (B-RA). The drying shrinkage of PRA was similar to that of BA with an average difference of
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15134563