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RSS FeedsSustainability, Vol. 11, Pages 1453: The Effect of Shrinkage-Compensation on the Performance of Strain-Hardening Cement Composite (SHCC) (Sustainability)

 
 

8 march 2019 20:00:08

 
Sustainability, Vol. 11, Pages 1453: The Effect of Shrinkage-Compensation on the Performance of Strain-Hardening Cement Composite (SHCC) (Sustainability)
 




This study investigated the effects of shrinkage compensation on the tensile and cracking responses of strain-hardening cement composite (SHCC) by adding calcium sulfoaluminate (CSA)-based expansive additive (EXA) to the mixture. Such responses are closely related to the durability of concrete structures, of dumbbell-shaped SHCC specimens, and reinforced SHCC ties. For this study, two SHCC mixtures and a conventional concrete mixture with a specific compressive strength value of 30 MPa were prepared and measured in terms of shrinkage history, compressive strength, flexural strength, and direct tensile strength. The test results show that the mechanical properties of shrinkage-compensated SHCC with 10% CSA-based EXA are superior to those of conventional SHCC and concrete mixtures. Also, reinforced tension ties with shrinkage-compensated SHCC exhibited the best multiple cracking and tension-stiffening behavior among the three types of tension ties tested. The results show that shrinkage compensation using CSA-based EXA in SHCC with rich mixture is effective for resisting crack damage. Shrinkage-compensated SHCC may be used for civil infrastructure facilities that require high levels of durability and are exposed to extreme environments.


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34 viewsCategory: Ecology
 
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