Mechanical behaviors and failure criteria of seawater sea-sand engineered cementitious composites under combined tension and shear

Liao, Qiao; Yu, Jiangtao; Shi, Tianchen; Su, Yuanrui

doi:10.1016/j.jobe.2022.104552

Cited by 6 publications

(1 citation statement)

References 35 publications

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“…Engineered cementitious composites (ECC) is a new type of fiber reinforced cementitious composite material proposed in the 1990s and continuously developed in recent decades [ 1 , 2 , 3 ], which mainly consists of cement, sand, fly ash, silica fume, fibers, and water. The fibers used in ECC, which play a crucial role in improving the material performance [ 4 ], commonly include polyvinyl alcohol (PVA) [ 5 , 6 , 7 ], polypropylene (PE) [ 8 , 9 , 10 ], PP [ 11 , 12 , 13 ], and hybrid fibers [ 14 , 15 , 16 ]. Besides, studies have shown that adding new additives, such as eggshell powder [ 17 ] or alkali-activated products composed of industrial waste materials [ 18 ], can improve the mechanical properties of cementitious materials and increase environmental protection, which may also be used for improving ECC performance.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Analytical Study on a Damage Constitutive Model of Engineered Cementitious Composites under Uniaxial Tension

Zhao

Wang

et al. 2022

Materials

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Engineered cementitious composites (ECC) exhibit ultra-high ductility and post-cracking resistance, which makes it an attractive material in civil engineering. First, a monotonic uniaxial tensile test was performed, considering the effects of polyvinyl alcohol (PVA) fiber volume content and water-binder ratio. Then, the effects of the above variables on the tensile characteristics including the tensile stress–strain relationship, deformation capacity, and fracture energy were investigated based on test results; and when the water-binder ratio is 0.28 and the fiber volume content is 2%, the deformation performance of ECC is improved most significantly. Next, combined with damage mechanics theory, the damage evolution mechanism of ECC in monotonic uniaxial tension was revealed, based on which the damage factor and damage evolution equation of ECC were developed and the expressions of model parameters were proposed. Moreover, the comparison between the proposed model and test results demonstrated the accuracy of the proposed model. Finally, to further verify the feasibility of the proposed model, a finite element (FE) simulation analysis of the tensile performance of high-strength stainless steel wire rope (HSSWR) reinforced ECC by adopting the proposed model was compared with test results and the simulation analysis results by using anther existing model, the “trilinear model of ECC”. The comparison shows that the proposed model in this paper can predict more accurately.

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