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dc.contributor.authorZhang, Zhigangen_US
dc.contributor.authorYang, Fanen_US
dc.contributor.authorLiu, Jin-Chengen_US
dc.contributor.authorWang, , Shupingen_US
dc.identifier.citationZhang, Z., Yang, F., Liu, J. & Wang, ,. S. (2020). Eco-friendly high strength, high ductility engineered cementitious composites (ECC) with substitution of fly ash by rice husk ash. Cement and Concrete Research, 137, 106200-.
dc.description.abstractIn this study, an agricultural waste-rice husk ash (RHA) is proposed to substitute fly ash in high strength, high ductility engineered cementitious composites (ECC). The experimental results showed that the substitution of fly ash by RHA accelerated hydration process, promoted pozzolanic reaction, and refined pore distribution in ECC matrix, thereby increased compressive strength of ECC mixtures significantly from 82 MPa to 108 MPa. On the other hand, tensile properties of ECC mixtures were improved with addition of RHA, except ECC mixture with substitute ratio of 50% showed a slight reduction in strain capacity yet exhibited highest strength. At micro-scale, incorporating RHA into ECC reduced the theoretical complementary energy (Jb′) as a result of enhanced fiber/matrix interface, meanwhile, lowered crack tip toughness (Jₜᵢₚ) in ECC matrix which mainly due to the evidently increased modulus of ECC; subsequently lead to the increment of pseudo strain-hardening PSH (=Jb′/Jₜᵢₚ) index, and thus ductility.en_US
dc.relation.ispartofCement and Concrete Researchen_US
dc.rights© 2020 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleEco-friendly high strength, high ductility engineered cementitious composites (ECC) with substitution of fly ash by rice husk ashen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.subject.keywordsEngineered Cementitious Compositesen_US
dc.subject.keywordsMechanical Propertiesen_US
dc.description.acknowledgementThe authors would like to graciously thank the National Natural Science Foundation of China (Grant No. 51708061), and the 111 Project of China (Grant No. B18062), and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJQN201800126) for the financial support of this work.en_US
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