Chloride ion transport properties in microcracked ultra-high performance concrete in the marine environment

Lv, Liangsheng; Wang, Junyan; Xiao, Rucheng; Fang, Ming-Shan; Tan, Yu

doi:10.1016/j.conbuildmat.2021.123310

Cited by 29 publications

(7 citation statements)

References 22 publications

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“…Studies on advanced cement-based materials are more scarce. Lv et al [131] verified the chloride ion transport in microcracked ultra-high performance concrete (UHPC) with steel fibres in a marine environment. They observed that even cracks around 50 µm wide formed in the protective layer over the steel fibres become rich in chloride ions.…”

Section: ‘Structural Durability’: Influence Of the Cracked State On D...mentioning

confidence: 99%

A review of the efficiency of self-healing concrete technologies for durable and sustainable concrete under realistic conditions

Cappellesso

Summa

Pourhaji

et al. 2023

International Materials Reviews

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Self-healing is recognized as a promising technique for increasing the durability of concrete structures by healing cracks, thereby reducing the need for maintenance activities over the service life and decreasing the environmental impact. Various self-healing technologies have been applied to a wide range of cementitious materials, and the performance has generally been assessed under 'ideal' laboratory conditions. Performance tests under ideal conditions, tailored to the self-healing mechanism, can demonstrate the self-healing potential. However, there is an urgent need to prove the robustness and reliability of self-healing under realistic simulated conditions and in real applications before entering the market. This review focuses on the influence of cracks on degradation phenomena in reinforced concrete structures, the efficiency of different healing agents in various realistic (aggressive) scenarios, test methods for evaluating self-healing efficiency, and provides a pathway for integrating self-healing performance into a life-cycle encompassing durability-based design.

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Section: ‘Structural Durability’: Influence Of the Cracked State On D...mentioning

confidence: 99%

A review of the efficiency of self-healing concrete technologies for durable and sustainable concrete under realistic conditions

Cappellesso

Summa

Pourhaji

et al. 2023

International Materials Reviews

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“…In order to truly take advantage of these innovative designs, they must be constructed using durable concrete (which avoids the issues discussed in Section 5). Using sustainable concrete will also reduce the overall environmental impact of construction, and recent advances in concrete technology, including the use of ultra-high performance concrete, seawater-mixed concrete, and concrete 3D printing [179][180][181] can be leveraged to make seawalls (more) sustainable and durable. Additional material and structural optimization can be performed through careful study and analysis of design loads (Section 3), which may need testing in a wave tank.…”

Section: New Methods For Seawall Construction and Productionmentioning

confidence: 99%

Concrete Seawalls: Load Considerations, Ecological Performance, Durability, and Recent Innovations

Hosseinzadeh¹,

Ghiasian²,

Andiroglu³

et al. 2021

Preprint

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Increasing frequency of extreme weather events, driven by climate change, has resulted in an increasing demand for coastal structures to protect and stabilize shorelines. Concrete seawalls are a common category of coastal protection structures, designed with the primary objectives of absorbing wave action, preventing coastline erosion, and alleviating flooding. Much research has been carried out on improving the seawall performance. This work is a review of the current state-of-the-art in concrete seawalls focusing on design aspects including wave loading and innovative seawall designs, ecological considerations, and durability aspects. Wave loads on seawalls have received significant attention; however, their quantification remains a challenging task especially for novel designs. Drawing inspiration from natural shorelines, modification of surface complexity at a multitude of scales can improve the otherwise poor ecological performance of seawalls. The corrosion of the steel is a major durability concern, and the use of non-corrosive reinforcement can increase seawall durability towards corrosion. Examples of innovative seawall designs and systems which have the capability to outperform conventional seawalls are discussed. Advances in structural design, ecological engineering, and infrastructure materials science will drive the development of multi-functional seawalls which are sustainable, durable, and resilient.

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“…The mass transport of concrete under various conditions, such as high temperature, dry shrinkage, and alkali-aggregate reaction, and its relationship with the internal structure of concrete were conducted [53]. Li et al [54] artificially generated cracks with different degree of severity on thin concrete specimens and conducted nitrogen permeability experiments. They discovered a linear relationship between crack density and relative permeability coefficient.…”

Section: -100mentioning

confidence: 99%

Computational methods of mass transport in concrete under stress and crack conditions: A review

X¹,

Wang²,

Jin³

et al. 2023

Journal of Intelligent Construction

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Keywords concrete cracking stress condition mass transport computational methodsCurrently, the durability of cement-based composites is primarily influenced by the presence and transport of corrosive fluids. In structural concrete, various factors such as mechanical loads and drying shrinkage can lead to the formation of cracks, which adversely affect its transport properties. While there is some consensus regarding the impact of individual cracks on transportation, our understanding of crack networks remains relatively limited. Furthermore, the maintenance of stress within the concrete can alter its porosity and influence the opening and closing of cracks, thereby affecting its transport properties. Due to limitations in experimental methods, characterizing the geometry of crack networks poses a challenge. However, numerical modeling offers an efficient and practical approach to investigate the impact of cracks, particularly microcracks, on the diffusivity of concrete.

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Chloride ion transport properties in microcracked ultra-high performance concrete in the marine environment

Cited by 29 publications

References 22 publications

A review of the efficiency of self-healing concrete technologies for durable and sustainable concrete under realistic conditions

A review of the efficiency of self-healing concrete technologies for durable and sustainable concrete under realistic conditions

Concrete Seawalls: Load Considerations, Ecological Performance, Durability, and Recent Innovations

Computational methods of mass transport in concrete under stress and crack conditions: A review

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