Compression-shear performance and failure criteria of seawater sea-sand engineered cementitious composites with polyethylene fibers

Liao, Qiao; Su, Yuanrui; Yu, Jiangtao; Yu, Kequan

doi:10.1016/j.conbuildmat.2022.128386

Cited by 32 publications

(4 citation statements)

References 35 publications

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“…Therefore, the so-called upper cap of the plasticity, if it exists in the case of SHCC, occurs at a much higher limit beyond the test range of the present study. It is noted that this result is consistent with observations reported by other researchers who have studied the constitutive behaviour of SHCC [10][11][12][13][14][15][16][17][18][19]. In all cases found in the literature, the failure criteria were nearly linear, indicating the damage control effected by the presence of fibres in SHCC, which differentiates its constitutive response from regular concrete where damage is an essential variable of the plasticity formulations used in the concrete damage plasticity model of Abaqus [24] and the RHT in LS-Dyna [21].…”

Section: Discussion: a Three-parameter Failure Criterion For Shccsupporting

confidence: 93%

“…Several experimental studies have been conducted to examine the performance of SHCC in retrofitting applications. Fewer studies deal with the development of constitutive models to predict the mechanical response of these materials [10][11][12][13][14][15][16][17][18][19]. The approach taken is to carry out material characterization tests so as to provide adequate data for the calibration of SHCC-specific failure criteria.…”

Section: Introductionmentioning

confidence: 99%

“…They reported reduced damage with a higher fibre content, a behaviour that is reflected by failure criteria with meridians that are nearly linear for cases with higher fibre contents-as in the previous case, the response was reproduced up to the peak point. Liao et al [13] studied the effect of fibre content and normal stress on shear strength. The SHCC material considered different volumetric ratios of PE fibres (0%, 0.5% and 1.5%).…”

Section: Introductionmentioning

confidence: 99%

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Shear Strength of Strain-Hardening Cementitious Materials

Georgiou,

Eshghi,

Pantazopoulou

2023

Construction Materials

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Concrete and other semi-brittle materials are pressure sensitive. Their resistance to shear depends on the confining pressure acting normal to the shear plane. This behaviour is modelled using experimentally calibrated failure criteria, such as the Mohr–Coulomb failure surface. Pressure sensitivity is also strongly evident in fibre-reinforced, strain-hardening cementitious composites (SHCC), despite the internal confinement these materials possess on account of their fibre content. However, because of the great range and variety of mixes used in such materials, no general failure criteria have yet been proposed. In this paper, the pressure-sensitive shear strength of SHCC containing short discontinuous PVA fibres is modelled with a three-parameter failure criterion. The parameters of the criterion are calibrated to the experimental results obtained from several tests that combine shear and normal pressure. These include uniaxial tension and compression, split tests, triaxial compression, and a series of push-off tests with and without reinforcement crossing the shear sliding plane. The calibration of the failure criterion explicitly accounted for the magnitude of internal confinement which is generated in the cementitious matrix in response to fibre tension. The criterion is appropriate for general purpose analysis of the stress state of SHCC, but most importantly it is used to assess the SHCC contribution to the shear strength of structural elements.

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Section: Discussion: a Three-parameter Failure Criterion For Shccsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shear Strength of Strain-Hardening Cementitious Materials

Georgiou,

Eshghi,

Pantazopoulou

2023

Construction Materials

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“…However, the weakness of RS might be an advantage when RS is used as fine aggregate for producing fiber-reinforced cementitious composites, specifically, engineered cementitious composites (ECC) [16,17]. ECC, also named strain-hardening cementitious composites (SHCC) [18,19], belong to the fiber-reinforced cementitious composites, which exhibit pseudo strain-hardening behavior with excellent tensile properties and crack width less than 100 mm [20,21]. Based on the above advantage, ECC overcomes many of the challenges associated with the brittleness and cracking of concrete materials, improving the safety and durability of infrastructure [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Recycled Sand on the Tensile Properties of Engineered Cementitious Composites

et al. 2022

Self Cite

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This research aims to investigate the feasibility of replacing natural sand (NS) with recycled sand (RS) to enhance the mechanical property of engineered cementitious composites (ECC). For a comparative study, ECCs incorporating natural sands (NS) and recycled sands with different sieve sizes were taken as experimental subjects. The results demonstrated that RS-ECC possessed better tensile properties featuring saturated cracks and superior strain-hardening behavior than that of NS-ECC. The highest tensile strain capacity of RS-ECC was up to 7%. Meanwhile, the compressive and flexural strengths of RS-ECC were over 50 and 20 MPa. The pseudo-strain-hardening (PSH) index of the RS-ECC-20 grid and RS-ECC-12 grid were 141 and 201, which increased by 46% and 70% than that of NS-ECC. Furthermore, the thicker weak ITZ and comparatively aggregate/ITZ ratio were found in the RE-ECC by a microstructure test, which revealed and explained the mechanism for the lower matrix fracture toughness of RS-ECC.

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Incorporating sea sand into self-compacting concrete: a systematic review

Sindhurashmi,

Nayak,

Adesh

et al. 2024

Discov Appl Sci

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The increasing demand for river sand, driven by infrastructure development, poses environmental challenges. The study aims to address the depletion of river sand by integrating sea sand as a fine aggregate in the production of Self-Compacting Concrete (SCC) through a Systematic Literature Review. Furthermore, it includes an in-depth bibliographic analysis of relevant literature using VOSviewer to generate network visualizations of author-co-citation and country-wise citations. The article offers diverse options for sustainable solutions to mitigate environmental impacts while meeting infrastructure demands. It focuses on assessing the durability of SCC incorporating sea sand through real-time monitoring with the Internet of Things (IoT) and employing artificial intelligence methods like PointRend and neural networks to study the properties of SCC utilizing sea sand. Subsequently, the study emphasizes the need to address river sand shortages in infrastructure development and provides insights for further research on enhancing the properties of SCC with sea sand.

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Compression-shear performance and failure criteria of seawater sea-sand engineered cementitious composites with polyethylene fibers

Cited by 32 publications

References 35 publications

Shear Strength of Strain-Hardening Cementitious Materials

Shear Strength of Strain-Hardening Cementitious Materials

The Effect of Recycled Sand on the Tensile Properties of Engineered Cementitious Composites

Incorporating sea sand into self-compacting concrete: a systematic review

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