Orthogonal experimental study on hybrid-fiber high-durability concrete for marine environment

Fu, Qiang; Xu, Wenrui; Bu, Mengxin; Guo, Bingbing; Niu, Ditao

doi:10.1016/j.jmrt.2021.05.088

Cited by 24 publications

(11 citation statements)

References 36 publications

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“…In this study, micropolypropylene fibers (MFs) were used to reduce the layer deformation of printed mortars. Fibers are known for their ability to improve both mechanical and physical properties of concrete, ranging from shrinkage reduction and durability enhancement (Wongprachum et al , 2018; Fu et al , 2021), to impact resistance (Maho et al , 2017; Sukontasukkul et al , 2013; Sukontasukkul and Mindess, 2003), toughness and strength improvement (Guo et al , 2021; Sukontasukkul, 2004). Thus, the addition of microfiber into the mortar mix is expected to improve the buildability of printable mortar.…”

Section: Introductionmentioning

confidence: 99%

Precise determination of initial printable time for cement mortar 3D printing using a derivative method

Sukontasukkul,

Maho,

Komkham

et al. 2023

RPJ

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Purpose This study aims to propose a technique that establishes a mathematical relationship between width and time, and utilizes a derivative method to determine the initial printable time (tint) for mortar suitable for 3D printing. The study conducted experimental tests on the tint, layer strain, and the relationship between filament width and time. These tests involved plain mortar and mortar reinforced with micro-fibers at varying volume fractions. The tint was determined analytically using the derivative method. Design/methodology/approach This study introduces a technique to accurately determine the initial printable time (tint) and width/height of printed cement mortar. Precise tint determination is essential for ensuring proper filament printing timing and eliminating the need for trial and error. Findings Results show that the proposed technique accurately determines the tint, as evidenced by the resemblance between expected and actual initial widths. Fiber-reinforced mortar (FRM) has a smaller tint than plain mortar, which decreases with an increasing fiber content. Additionally, FRM displays smaller layer strains compared to plain mortar. Research limitations/implications Results show that the proposed technique accurately determines the tint, as evidenced by the resemblance between expected and actual initial widths. FRM exhibits smaller tint and displays smaller layer strains than plain mortar. Originality/value This study introduces a novel technique that uses a mathematical relationship to determine the tint and height of cement mortar printing.

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Section: Introductionmentioning

confidence: 99%

Precise determination of initial printable time for cement mortar 3D printing using a derivative method

Sukontasukkul,

Maho,

Komkham

et al. 2023

RPJ

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“…When the degree of freedom is small, the sensitivity of F test is low. In order to increase the degree of freedom and improve the sensitivity of F test, the sum of the deviation of the test factors if the sum of the factors is less than half of the sum of error before the sum of error and the degree of freedom, increasing the sum of error and its degree of freedom, so as to increase the sensitivity of F test [12] 。 Table 8 shows the results of orthogonal test variance analysis. For the dry density of glass autoclaved aerated concrete, the influence of water-material ratio is generally significant, and the significant order of each influencing factor is water-material ratio, gypsum, quartz sand, glass powder and cement.…”

Section: Anova Analysismentioning

confidence: 99%

Study on the Preparation and Properties of Glass Powder Autoclaved Aerated Concrete

Wen,

Wang

2023

Advances in Transdisciplinary Engineering

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Using waste glass instead of quartz sand as silicon raw material preparation of autoclaved aerated concrete, research under different glass powder autoclaved aerated concrete performance evolution law, by scanning electron microscope analysis of glass, using orthogonal test of glass autoclaved aerated concrete ratio optimization design, analysis of glass powder, quartz sand dosage, cement dosage, gypsum dosage, water ratio of autoclaved aerated concrete performance. The results show that with the increase of the substitution rate of glass powder, the dry density of autoclaved aerated concrete is increasing, and the compressive strength can improve the crystallinity of the compounds in the autoclaved aerated concrete. When the substitution rate of glass powder is 60%, the compressive strength of the autoclaved aerated concrete is maximum, and the optimal mix ratio of the autoclaved aerated concrete meets the requirements of specification A5.0 B07 strength grade.

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“…Ordinary Portland Cement (OPC) is the most widely used cement binder in modern concrete applications. The manufacturing of OPC clinker results in utilizing massive quantities of natural resources and energy, which has an adverse impact on the environment [17][18][19][20][21]. It is estimated that 0.83 kg of CO 2 is produced during the production of 1 kg of cement clinker, which corresponds to the cement manufacturing industry bearing responsibility for nearly 6-8% of global CO 2 emissions [17,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

Udumulla,

Ginigaddara,

Jayasinghe

et al. 2024

Materials

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This review focuses on recent advances in concrete durability using graphene oxide (GO) as a nanomaterial additive, with a goal to fill the gap between concrete technology, chemical interactions, and concrete durability, whilst providing insights for the adaptation of GO as an additive in concrete construction. An overview of concrete durability applications, key durability failure mechanisms of concrete, transportation mechanisms, chemical reactions involved in compromising durability, and the chemical alterations within a concrete system are discussed to understand how they impact the overall durability of concrete. The existing literature on the durability and chemical resistance of GO-reinforced concrete and mortar was reviewed and summarized. The impacts of nano-additives on the durability of concrete and its mechanisms are thoroughly discussed, particularly focusing on GO as the primary nanomaterial and its impact on durability. Finally, research gaps, future recommendations, and challenges related to the durability of mass-scale GO applications are presented.

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Orthogonal experimental study on hybrid-fiber high-durability concrete for marine environment

Cited by 24 publications

References 36 publications

Precise determination of initial printable time for cement mortar 3D printing using a derivative method

Precise determination of initial printable time for cement mortar 3D printing using a derivative method

Study on the Preparation and Properties of Glass Powder Autoclaved Aerated Concrete

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

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