Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles

Tian, Jun; Wu, Xiaowei; Zheng, Yu; Hu, Shaowei; Ren, Wei; Du, Yinfei; Wang, Wenwei; Sun, Ce; Ma, Jie; Ye, Yuxiao

doi:10.1016/j.conbuildmat.2019.07.237

Cited by 69 publications

(14 citation statements)

References 36 publications

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“…The advantages of ECC were found to be its ultra-high toughness, multiple micro-cracking behaviors, better fatigue resistance, good durability, and self-healing characterization [ 4 ]. According to Şahmaran and Li [ 5 ], the addition of fly ash (FA) is also one of the essential components in ECC as the increment of FA in ECC reduces the crack width from about 60 μm to 10–30 μm, contributing positively toward the durability of the structure in long-term periods.…”

Section: Introductionmentioning

confidence: 99%

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

et al. 2020

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Engineered cementitious composite (ECC) was discovered as a new substitute of conventional concrete as it provides better results in terms of tensile strain, reaching beyond 3%. From then, more studies were done to partially replace crumb rubber with sand to achieve a more sustainable and eco-friendlier composite from the original ECC. However, the elastic modulus of ECC was noticeably degraded. This could bring potential unseen dangerous consequences as the fatigue might happen at any time without any sign. The replacement of crumb rubber was then found to not only bring a more sustainable and eco-friendlier result but also increase the ductility and the durability of the composite, with lighter specific gravity compared to conventional concrete. This study investigated the effects of crumb rubber (CR) and graphene oxide (GO) toward the deformable properties of rubberized ECC, including the compressive strength, elastic modulus, Poisson’s ratio, and drying shrinkage. Central composite design (CCD) was utilized to provide 13 reasonable trial mixtures with the ranging level of CR replacement from 0–30% and that of GO from 0.01–0.08%. The results show that GO increased the strength of the developed GO-RECC. It was also found that the addition of CR and GO to ECC brought a notable improvement in mechanical and deformable properties. The predicted model that was developed using response surface methodology (RSM) shows that the variables (compression strength, elastic modulus, Poisson’s ratio, and drying shrinkage) rely on the independent (CR and GO) variables and are highly correlated.

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Section: Introductionmentioning

confidence: 99%

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

et al. 2020

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“…e loss of freeze-thaw damage is particularly serious, which affects the service life of structures and leads to great economic losses [7,8]. erefore, it is of great significance to study how to improve the frost resistance of concrete structures and evaluate the frost resistance of concrete structures for the reinforcement and maintenance of concrete structures under extreme weather conditions [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Study of the Frost Resistance of HDFC Based on a Response Surface Model and GM (1,1) Model

Liu

Jiang

2022

Advances in Materials Science and Engineering

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Taking high ductility concrete (HDFC) as a research object, the frost resistance of HDFC in freeze-thaw cycle tests is studied, accurately predicted, and quantitatively described. Taking the relative dynamic elastic modulus as the evaluation index, the response surface model and GM (1,1) model were used to study the frost resistance of HDFC, and the advantages and disadvantages were evaluated. Design-Expert software was used to establish a response surface model to study the effects of polyvinyl alcohol fiber (PVA) length, polyvinyl alcohol fiber volume content, and number of freeze-thaw cycles on the frost resistance of HDFC, and a fitting relationship model between the relative dynamic elastic modulus and these three factors was established. The results show that the influence of PVA fiber content on the frost resistance durability of HDFC is higher than that of the PVA fiber length, but the effect of the external environment on the degree of deterioration for HDFC is greater than the improvement of the properties of the material itself; that is, the freeze-thaw cycling has a greater effect than the PVA fiber content and length. Grey system theory was introduced in the HDFC freezing resistance test, and the change rule for the relative elastic modulus and the average relative error for the GM (1,1) model for varying PVA fiber length and content was determined to be less than 5%. It is concluded that the freezing resistance prediction accuracy for HDFC based on the GM (1,1) model is higher than that of the response surface model. The GM (1,1) model can be used to accurately predict the degree of damage caused by freezing and melting cycles for HDFC.

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“…To improve the ductility behavior of the interface between new concrete and OCS, fibers have been used to improve the cohesion at the interface before the repair bond fully develops [ 20 , 21 ]. Simultaneously, many researchers have reported that the higher the compressive strength and coarser interface are, the higher interface shear stress is [ 22 , 23 , 24 ]. Zhang et al [ 14 , 15 ] investigated the interface between carbonated concrete substrate and self-compacting concrete by direct shear tests.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Shear Behavior of the Interface between Early-Strength Self-Compacting Shrinkage-Compensating High-Performance Concrete and Ordinary Concrete Substrate

Yang

Backer

et al. 2022

Materials

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To improve interface bonding stress, early-strength self-compacting shrinkage-compensating high-performance concrete (ESS-HPC) was selected as an excellent strengthening material to investigate by direct shear test. Tests on seventeen Z-type specimens were carried out considering the ESS-HPC and ordinary concrete substrate (OCS) compressive strength grade, the ESS-HPC curing age, the OCS surface roughness, and the ratio of steel shear dowels as the variables. A bond stress–slip model of the interface was proposed via statistical fitting. The results show that the surface roughness and ratios of steel shear dowels had the most important influence on the shear bond stress. The shear bond stress of the specimens without steel shear dowels increased by almost 15% as the ESS-HPC strength grade changed from C60 to C75. With the increase in the curing age, the shear bond stress showed a changing trend of first increasing and then decreasing. The coarser surface with the drilling method can improve the shear bond stress by 89%. To achieve a secondary increase in the shear bond stress of specimens with steel shear dowels, the minimum ratio of steel shear dowels was 0.83%. Analytical equations are proposed in combination with the CEB-FIB Model 2010 and AASHTO Model. The calculated results show reasonable agreement with the experimental results within an acceptable range.

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Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles

Cited by 69 publications

References 36 publications

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

Study of the Frost Resistance of HDFC Based on a Response Surface Model and GM (1,1) Model

Experimental Investigation on Shear Behavior of the Interface between Early-Strength Self-Compacting Shrinkage-Compensating High-Performance Concrete and Ordinary Concrete Substrate

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