Shear behavior of strain-hardening cement composite walls under quasi-static cyclic loading

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.

Download Full-text

Structural Performance of Reinforced Strain Hardening Cementitious Composite Pipes during Cyclic Loading

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/252/2/022041 ◽

2019 ◽

Vol 252 ◽

pp. 022041

Author(s):

Jun Li ◽

Yujuan Li ◽

Jiao Guo ◽

Meinan Wan ◽

Xun Dong

Keyword(s):

Cyclic Loading ◽

Strain Hardening ◽

Structural Performance ◽

Cementitious Composite ◽

Composite Pipes

Download Full-text

Cyclic Loading of Beams Based on Kinematics Hardening Behavior Coupled With Isotropic Damage

Volume 4: Fatigue and Fracture, Heat Transfer, Internal Combustion Engines, Manufacturing, and Technology and Society ◽

10.1115/esda2006-95239 ◽

2006 ◽

Cited By ~ 1

Author(s):

Ali Nayebi ◽

Kourosh H. Shirazi

Keyword(s):

Cyclic Loading ◽

Strain Hardening ◽

Kinematic Hardening ◽

Damage Model ◽

Mapping Algorithm ◽

Return Mapping ◽

Tension And Compression ◽

Computational Aspects ◽

Isotropic Damage ◽

Path Dependent

The kinematic hardening theory of plasticity based on the Prager model and incremental isotropic damage is used to evaluate the cyclic loading behavior of a beam under the axial, bending, and thermal loads. This allows damage to be path-dependent. The damage and inelastic deformation are incorporated and they are used for the analysis of the beam. The beam material is assumed to follow linear strain hardening property coupled with isotropic damage. The material strain hardening curves in tension and compression are assumed to be both identical for the isotropic material. Computational aspects of rate independent model is discussed and the constitutive equation of the rate independent plasticity coupled with the damage model are decomposed into the elastic, plastic and damage parts. Return Mapping Algorithm method is used for the correction of the elastoplastic state and for the damage model the algorithm is used according to the governed damage constitutive relation. The effect of the damage phenomenon coupled with the elastoplastic kinematic hardening is studied for deformation and load control loadings.

Download Full-text

Quasistatic Cyclic Tests and Finite Element Analysis of Low-Aspect Ratio Double Steel Concrete Composite Walls

Advances in Civil Engineering ◽

10.1155/2019/5917380 ◽

2019 ◽

Vol 2019 ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Kaize Ma ◽

Yudong Ma ◽

Boquan Liu

Keyword(s):

Finite Element ◽

Aspect Ratio ◽

Failure Modes ◽

Failure Process ◽

Lateral Load ◽

Shear Behavior ◽

Fe Method ◽

Element Analysis ◽

Low Aspect Ratio ◽

Composite Walls

An innovative double steel concrete (DSC) composite wall was developed to enhance constructability and lateral load resistance of buildings. Three low-aspect ratio DSC composite walls were constructed and tested to study the shear behavior. Under different testing parameters, the failure modes, hysteresis behavior, lateral load resisting capacity, deformation, and energy dissipation of the composite walls were observed. The results showed that all specimens failed in shear behavior with steel plate buckling and concrete compressive crushing. The pinching behavior was obvious for hysteresis loops of composite walls. Moreover, the lateral load resisting capacity and deformation were significantly affected with axial compression ratio and steel ratio. Beyond that, the ductility coefficients of specimens reached 3.30. The finite element (FE) method was performed to analyze the failure process of the specimens with cyclic analysis. The concrete damage plastic model (CPDM) was selected to simulate the damage progress of concrete. Validation of the FE models against the experimental results showed good agreement.

Download Full-text