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Enhancement of shrinkage behavior of lightweight aggregate concretes by shrinkage reducing admixture and fiber reinforcement

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Makale Dosyası (1.624Mb)

Date

2014-03-15

Author

Mermerdas, Kasim
Guneyisi, Erhan
Gesoglu, Mehmet
Mohamadameen, Alaa
Alzeebaree, Radhwan
Algin, Zeynep

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Guneyisi, E., Gesoglu, M., Mohamadameen, A., Alzeebaree, R., Algin, Z., & Mermerdas, K. (March 15, 2014). Enhancement of shrinkage behavior of lightweight aggregate concretes by shrinkage reducing admixture and fiber reinforcement. Construction and Building Materials, 54, 91-98.

Abstract

This paper presents the results obtained from an experimental study conducted to investigate the effect of shrinkage reducing admixture (SRA) and steel fiber addition on the performance properties of lightweight aggregate concrete (LWAC). Total of seven LWAC mixes with SRA or steel fibers were produced at the same water-cement ratio using cold-bonded fly ash coarse aggregates. The percentage of steel fiber volume fractions used in the mixes was 0.25, 0.75 and 1.25. The amount of SRA used in the mixes was 0.75%, 1.5% and 3 % by weight of cement. Ring type specimens were used for the restrained shrinkage cracking test. At the same time, free shrinkage and weight loss of LWACs were measured. Moreover, the compressive and split tensile strength tests were undertaken. The results indicated that the use of steel fibers has little effect on compressive strength but it improves the split tensile strength. The addition of SRA decreases compressive strength without affecting tensile strength. Moreover, the utilization of steel fiber or SRA extends the cracking time and reduces the crack width of LWAC resulting in finer cracks associated with lower free shrinkage. (C) 2013 Elsevier Ltd. All rights reserved.

Source

CONSTRUCTION AND BUILDING MATERIALS

Volume

54

URI

https://doi.org/10.1016/j.conbuildmat.2013.12.041
https://hdl.handle.net/20.500.11782/873

Collections

  • MF - İM Makale Koleksiyonu [77]
  • Scopus İndeksli Yayınlar Koleksiyonu [577]
  • WoS İndeksli Yayınlar Koleksiyonu [517]



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