Durability and transport properties of SCC incorporating dredged sediments

Safhi, Amine el Mahdi; Rivard, Patrice; Yahia, Ammar; Khayat, Kamal H.; Abriak, N.‐E.

doi:10.1016/j.conbuildmat.2021.123116

Cited by 17 publications

(5 citation statements)

References 74 publications

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“…For all AASCC mixtures, the percentage changes within the secondary absorption rate from 28 to 90 days were calculated. Generally, capillary sorptivity decreased with the degree of maturity and development of the curing age, which is compatible with previous reported findings [60,61]. The single precursor exhibited a 96% reduction compared to all other AASCC mixtures.…”

Section: Capillary Sorptivitysupporting

confidence: 92%

Fresh, Hardened, and Microstructural Properties of Ambient Cured One-Part Alkali-Activated Self-Consolidating Concrete

et al. 2023

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Several studies have investigated the properties of alkali-activated materials (AAM), considering it as a substitute of cementitious concrete. However, the studies on alkali-activated self-consolidating concrete (AASCC) are extremely limited. This paper investigated the properties of AASCCs utilizing ground granulated blast furnace slag (GGBFS) as the main precursor. Single, binary, and ternary AASCCs were produced using fly ash Class-F (FA) and silica fumes (SF) as a replacement for GGBFS. The fresh properties including filing ability, passing ability and stability, as well as the hardened properties including unconfined compressive strength, ultrasonic pulse velocity, electrical resistivity, absorption, and sorptivity of the ambient cured one-part AASCC mixtures with different precursor blends were investigated. In addition, the microstructural properties of 90-day AASCC blends were studied by various microscale analysis methods. This paper demonstrated that the higher fraction of sodium carbonate/silicate activators, ranging from 20% to 25%, contributed to delayed reaction kinetics and satisfactory fresh and mechanical properties in all systems due to their nature. Slag replacement with variable SF or FA class-F ratios, instead, could indeed adjust the particle size distribution of the total binder material and improve the fresh concrete characteristics in binary and ternary systems. Finally, the formation of various reaction products and binding gels, i.e., C-(N)A-S-H, was found to have a significant impact on several transport mechanisms, including capillary sorptivity, permeable pores, and bulk electrical resistivity.

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Section: Capillary Sorptivitysupporting

confidence: 92%

Fresh, Hardened, and Microstructural Properties of Ambient Cured One-Part Alkali-Activated Self-Consolidating Concrete

et al. 2023

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“…Geo-polymer gel with re-cycled aggregate was found to have higher porosity at the interstate paste and re-cycled aggregate. Moreover, additional geo-polymerization compounds including C-A-S-H, N-A-S-H or C-S-H and mono/tri sulfate with the needle was found in the matrix structure [80]. From the Fig.…”

Section: Acid Attacksmentioning

confidence: 92%

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Abhishek

Prashant

Kamath

et al. 2021

Innov. Infrastruct. Solut.

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This paper describes a review of the state-of-the-art research carried on the fresh and hardened properties of Alkali Activated Binders and Concretes. Though, many research have been carried out in the recent times on alkali activated binders, few key parameters still remain unattended, that restricts the commercial application of AAMs to the general construction activities. Fresh properties, mechanical strength and durability performance of Alkali activated concrete with various Alumino silicates as base materials is mentioned. An essential parameter of Alkali activated concrete is the concentration of alkaline solution on which various properties like mechanical strength, setting time and durability depends. Influence of wide range of concentrations from 6 to 16 M on these properties are studied and reported in this paper. This paper mainly concentrates on properties of readily available base materials such as Fly ash and Slag and the means to improve their performance through the use of various industrial and agro-based byproducts as additives. Problems pertaining to practical applicability of AAMs to general construction activities are also highlighted.

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“…Self-Consolidating Concrete (SCC) is a flowable, non-segregating concrete able to spread into place, fill the formwork, and encapsulate reinforcements without the need for mechanical vibration [2 , 3] . Developed to address difficult casting conditions, SCC's superior flowability and stability make it ideal for complex structures and intricate reinforcements [4 , 5] .…”

Section: Introductionmentioning

confidence: 99%

Self-consolidating concrete: Dataset on mixture design and key properties

Safhi

2024

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Durability and transport properties of SCC incorporating dredged sediments

Cited by 17 publications

References 74 publications

Fresh, Hardened, and Microstructural Properties of Ambient Cured One-Part Alkali-Activated Self-Consolidating Concrete

Fresh, Hardened, and Microstructural Properties of Ambient Cured One-Part Alkali-Activated Self-Consolidating Concrete

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Self-consolidating concrete: Dataset on mixture design and key properties

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