Shrinkage in Concrete Made from Recycled Aggregate
Keywords:
Drying shrinkage, Shrinkage, Recycled concrete, HumidityAbstract
Drying shrinkage is one of the type of shrinkage occurs at the very beginning due to the loss of moisture added to the concrete mix after the cement ingredients react with water. A comprehensive study has been conducted on thirty samples of different concrete mixes. The study focusses on the effect of relative humidity and recycled aggregate. Different ratio of recycled coarse aggregated (RCA) were used (0, 25, 50, 75, 100%) and compare with natural aggregates. The dimensions of the specimen used in this study were 7.5, 7.5, 28.5 cm .The results of drying shrinkage for samples cured under dry environment were 8 times than samples cured under full humidity. Also, the results indicated that specimens with recycled aggregate produce more drying shrinkage than Natural aggregate.
References
JACOB, L. L. G., Effects of Recycled Aggregates on Concrete Properties, 2011.
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Gómez Soberón, J. M. V., Shrinkage of concrete with replacement of aggregate with recycled concrete aggregate. Paper presented at the SP-209: ACI Fifth Int Conf on Innovation in Design with Emphasis on Seismic, Wind and Environmental oading, Quality Control, and Innovation in Materials/Hot Weather Concreting, 2002.
Castaño, J. O., Domingo, A., Lázaro, C., & Lopez-Gayarre, F., A study on drying shrinkage and creep of recycled concrete aggregate. Paper presented at the Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium, 2009.
Schoppe, B. M., Shrinkage & modulus of elasticity in concrete with recycled aggregates, (2011)..
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