Effects of Gradation of Sand on the Mechanical Properties of Engineered Cementitious Composites

Ying Zi Yang; Yan Yao; Yu Zhu

doi:10.4028/www.scientific.net/AMR.250-253.374

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Effects of Gradation of Sand on the Mechanical...

Effects of Gradation of Sand on the Mechanical Properties of Engineered Cementitious Composites

Abstract:

Four-point bending test was employed to investigate the effects of gradation of sand on the mechanical properties of Engineered Cementitious Composites (ECC). The characteristics of ECC such as mid-span deflection, first cracking load, peak load and fracture toughness were obtained from the load-deflection curve. Effects of gradation of sand on fresh properties, compressive strength, flexural strength and drying shrinkage of ECC were also discussed in this paper. Test results shown that when the fineness modulus of sand in ECC was 1.0, the mid-span deflection and fracture toughness of ECC increased nearly 1.5 times and 2 times that of ECC with the sand fineness modulus of 2.97, respectively. With the sand getting finer, the more superplascitizer is needed and the crack width of ECC becomes smaller. The drying shrinkage of ECC with 2.97 and 1.0 fineness modulus of sand at 24 days was 8×10^-4 and 15.6×10^-4, respectively.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

374-378

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.374

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Online since:

May 2011

Authors:

Ying Zi Yang, Yan Yao, Yu Zhu

Keywords:

Drying Shrinkage, Engineered Cementitious Composites (ECC), Fineness Modulus of Sand, Mechanical Property

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