A Self-Compacting Cement Paste Formulation using Mixture Design

Mebrouki, Abdelkader; Belas, Nadia; Bendani, Karim; Bouhamou, N.

doi:10.3923/jas.2009.4127.4136

Cited by 11 publications

(4 citation statements)

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“…The rheological behavior of the geopolymer/SCBA paste right after mixing was tested using a miniature slump (mini-slump) cone test. [ 25 , 26 ]. The paste was injected into a truncated conical mold, which was then lifted to a vertical position in accordance with ASTM C143.…”

Section: Experimental Section/methodsmentioning

confidence: 99%

Mechanical and Dielectric Properties of Fly Ash Geopolymer/Sugarcane Bagasse Ash Composites

et al. 2022

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Fly ash (FA) and sugarcane bagasse ash (SCBA) are the wastes from lignite power plants and sugar industries, usually disposed of as landfills. In this research, these wastes were effectively utilized as a construction material, namely geopolymer. The effect of the SCBA (0–40 wt.%) addition to the FA geopolymers was investigated. The compressive strength of the FA geopolymers was reduced with the SCBA addition. The reduction was mainly due to the presence of the highly stable and non-reactive quartz (SiO2) phase in SCBA. The SCBA was not dissolved in the alkaline activated solution and hence did not contribute to the geopolymerization process. The unreacted SCBA particles remained in the geopolymer matrix but did not provide strength. However, if the amount of SCBA was about 10 wt.% or less, the impact on the characteristics and properties of FA geopolymers was minimal. Furthermore, this research also studied the dielectric properties of the FA geopolymer/SCBA composites. The relatively large dielectric constant (e’ = 3.6 × 103) was found for the pristine geopolymer. The addition of SCBA decreased the e¢ slightly due to high carbon content in SCBA. Nevertheless, the variation in e’ was mainly controlled by the geopolymerization process to form the aluminosilicate gel structure.

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Section: Experimental Section/methodsmentioning

confidence: 99%

Mechanical and Dielectric Properties of Fly Ash Geopolymer/Sugarcane Bagasse Ash Composites

et al. 2022

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“…The volume of the paste in SCC is much higher than in ordinary concrete, which leads to the use of more additives and admixtures. The composition of the paste is the main parameter affecting the self-compactibility properties [32].…”

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confidence: 99%

Feasibility of using marine sediments in SCC pastes as supplementary cementitious materials

et al. 2019

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In the context of the depletion of natural geomaterials, the increasing amount of dredged sediments calls for seeking new possibilities for treating and recycling these materials as cementitious supplementary materials. The aim of this paper is to design ecological SCC pastes, which require less cement, incorporating treated marine sediments. Despite many approaches investigating the ultimate formula of self-compacting concrete (SCC), the process remains complex because it is based on many variables and components. According to the mix design method, twenty pastes were prepared with cement, superplasticizer, water, and treated marine sediments from the Dunkirk harbour (France). The pastes' fresh properties were determined by using the mini-slump cone (workability), and the Marsh cone (fluidity). Rheological properties were determined with a robust rheometer based on the Bingham model. Cohesiveness and compressive strength were tested as well. All responses were connected using ternary diagrams, which led to the definition of an optimal formula. Experimental checking was performed to validate the obtained results.

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“…The optimum dosage of SP in a cementitious system can be determined using the Marsh cone according to EN 445 [25]. The test procedure involves adding the superplasticizer (SP) gradually to the mixture and measuring the time taken for the paste to flow out of an 8-mm-diameter cone through the cone.…”

Section: Cement Paste Testingmentioning

confidence: 99%

Influence of calcined dam mud on the thermal conductivity of binary and ternary self-compacting concrete mixtures using the equivalent mortar method

Sallai,

Bouhamou,

Marouf

et al. 2024

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Reducing energy consumption in concrete buildings requires cement-based structural materials that have low thermal conductivity. Moreover, low thermal conductivity is a crucial property of building materials used for thermal insulation to ensure the comfort of building occupants. The research evaluates the effect of using calcined mud (CM) and natural pozzolan (Pz) on the thermal conductivity of self-compacting concrete (SCC). To optimise SCC formulations, the equivalent concrete mortar method has been used. This communication mainly focuses on the equivalent self-compacting concrete mortars (ESCCMs). The current study consists of ten formulations: one control (based on Portland cement) and nine others containing binary and ternary systems of Portland cement, calcined mud, and natural pozzolan with 10%, 20%, and 30% replacement rates . The mixtures were prepared using tests of cement paste and equivalent mortar in a fresh state. Afterwards, they were assessed based on their compressive strength at 14, 28, 90, and 180 days and their thermal conductivity at 28 and 90 days in the hardened state. The self-compatibility, the thermal conductivity, and the mechanical performance results obtained by relevant tests on ESCCMs prove that the ternary systems (Portland cement, CM, and Pz) open up many techno-economic development avenues in SCC applications to be explored.

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A Self-Compacting Cement Paste Formulation using Mixture Design

Cited by 11 publications

References 1 publication

Mechanical and Dielectric Properties of Fly Ash Geopolymer/Sugarcane Bagasse Ash Composites

Mechanical and Dielectric Properties of Fly Ash Geopolymer/Sugarcane Bagasse Ash Composites

Feasibility of using marine sediments in SCC pastes as supplementary cementitious materials

Influence of calcined dam mud on the thermal conductivity of binary and ternary self-compacting concrete mixtures using the equivalent mortar method

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