Seawater sea-sand engineered/strain-hardening cementitious composites (ECC/SHCC): Assessment and modeling of crack characteristics

Huang, Bo-Tao; Wu, Jiaqi; Yu, Jing; Dai, Jianhua; Leung, Christopher Kin Ying; Li, Victor C.

doi:10.1016/j.cemconres.2020.106292

Cited by 205 publications

(24 citation statements)

References 52 publications

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“…Furthermore, the mechanical performance of the composites with 12 mm fibers was noticeably better than that of the composites with 8 mm fibers. Sasmal et al [31] investigated the flexural properties of HDCCs with 8 mm and 12 mm fibers, while they concluded that the variation in the fiber length from 8 mm to 12 mm did not induce any significant improvement in the flexural strength and even showed a slight decrease of 2.0% in the volume fraction, which was distinctly different from the conclusions obtained by Dai et al [32] who used polyethylene (PE) fiber (6 mm, 12 mm and 18 mm) and seawater sea-sand to prepare HDCCs; they found that the fiber length had no obvious effect on the compressive strength. Longer fiber length had no obvious effect on the tensile strength but led to a significant increase in the tensile strain capacity, from 2.5% for 6 mm fiber to over 7% for 18 mm fiber.…”

Section: Introductionmentioning

confidence: 82%

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Ding

Guo

Ren

et al. 2021

Advances in Materials Science and Engineering

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The fiber length has a significant impact on the fiber bridging capacity and the mechanical properties of high ductility cementitious composites (HDCCs), which is related to fiber/matrix interfacial bonding. However, this fundamental knowledge of HDCCs design has rarely been investigated systematically. To this end, this study deeply investigates the effect of the fiber length on the bridging stress and the complementary energy with various fiber/matrix interfacial bonds in theory. Then, the mechanical performances of HDCCs with various fiber lengths and compressive strengths were evaluated experimentally. In micromechanical design, longer fibers can achieve stronger bridging stress and more sufficient complementary energy regardless of the fiber/matrix interfacial bonding properties. However, it should be noted that the increase in bridging capacity was quite slow for the overlong fibers and excessive interfacial bonding. The experiments indicated that overlong fibers (18 mm and 24 mm) easily twined on the mixer blade and were hard to disperse evenly. The HDCCs with shorter fibers displayed better workability. The compressive strength was less affected by the fiber length, and most striking differences were less than 5.0%, while the flexural properties and the tensile properties first increased and then decreased when the fiber length ranged from 6 mm to 24 mm. Consequently, the fibers with lengths of 9 mm and the fibers with lengths of 12 mm were better candidates for the HDCCs with compressive strengths of 30 MPa to 80 MPa, and fibers with lengths of 9 mm caused the HDCCs to exhibit higher ductility properties in general.

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Section: Introductionmentioning

confidence: 82%

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Ding

Guo

Ren

et al. 2021

Advances in Materials Science and Engineering

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“…Dentro do conceito de instalação de uma estrutura de extração de areia, a delimitação das áreas de influência é fundamental, analisando nesta etapa os possíveis impactos ao meio biótico, físico e socioeconômico. Gomes et. al.…”

Section: Avaliação Ambientalunclassified

Utilização Da Areia Marinha Para Produção De Concreto: Estudo De Viabilidade

et al. 2021

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A indústria da construção civil tem destacado papel na sociedade brasileira devido a sua importância socioeconômica. Estudos conduzidos no Brasil e no exterior apontam que a areia marinha se apresenta como uma alternativa viável na construção civil. Nesta direção, esta pesquisa analisa uma amostra de agregado miúdo do litoral da Serra/ES, Brasil. Foram realizados ensaios de composição granulométrica, massa específica, teor de argilas em torrões, teor de materiais friáveis, teor de materiais pulverulentos, dimensão máxima característica, avaliação de impurezas orgânicas solúveis, teor de cloretos solúveis, teor de sais solúveis, teor de sulfatos solúveis, teor de materiais carbonosos e pH e resistência a compressão uniaxial. Os ensaios colorimétricos de avaliação de penetração de cloretos no concreto, imerso em água do mar durante 7 dias, não destacaram a presença de cloretos livres em nenhuma das amostras. Ensaios de carbonatação não revelaram processos de carbonatação nos três corpos de prova analisados. Os ensaios de resistência à compressão mostraram que o concreto moldado com areia marinha possui resultados próximos ao moldado com areia de rio.

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“…the distribution and evolution of crack width) are also important for practical applications (Huang et al, 2020). In the next section, the cracking characteristics of all the tensile samples are further analyzed and modeled based on a probabilistic approach proposed by the authors (Huang et al, 2021).…”

Section: Tensile Performancementioning

confidence: 99%

Effect of fiber content on mechanical performance and cracking characteristics of ultra-high-performance seawater sea-sand concrete (UHP-SSC)

Huang

Wang

et al. 2020

Advances in Structural Engineering

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Developing seawater sea-sand concrete can address the challenges arising from the lack of freshwater and river/manufactured sand for making concrete on-site for sustainable marine and coastal construction. To eliminate the corrosion risk of steel fibers while maintaining the high ductility of concrete, this study aims to develop a new type of ultra-high-performance seawater sea-sand concrete (UHP-SSC) by using ultra-high-molecular-weight polyethylene fibers. The effect of fiber content (0%, 0.5%, 1.0%, and 1.5% by volume) on the mechanical performance and cracking characteristics of UHP-SSC was experimentally investigated. The results showed that as the fiber content increases, the tensile strength and strain capacity of UHP-SSC significantly increase, while the compressive strength slightly decreases (but still over 130 MPa). The stochastic nature of the crack width was characterized by the Weibull distribution. A probabilistic model was used to model the evolution of the crack width for UHP-SSC at different strain levels. The model showed good agreement with the experimental results, and it can be used to estimate the allowed tensile strain of UHP-SSC in practical applications for a given limit of crack width and cumulative probability. The findings in this study provide insights into the future design of UHP-SSC in marine and coastal applications.

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Seawater sea-sand engineered/strain-hardening cementitious composites (ECC/SHCC): Assessment and modeling of crack characteristics

Cited by 205 publications

References 52 publications

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Utilização Da Areia Marinha Para Produção De Concreto: Estudo De Viabilidade

Effect of fiber content on mechanical performance and cracking characteristics of ultra-high-performance seawater sea-sand concrete (UHP-SSC)

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