Effect of calcined Czech claystone on the properties of high performance concrete: Microstructure, strength and durability

Vejmelková, Eva; Koňáková, Dana; Doleželová, Magdaléna; Scheinherrová, Lenka; Svora, Petr; Keppert, Martin; Reiterman, Pavel; Černý, Robert

doi:10.1016/j.conbuildmat.2018.02.204

Cited by 24 publications

(11 citation statements)

References 28 publications

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“…The smaller the particle size, the higher the CH consumption per SCM gram. This phenomenon is represented in Figure 4 for both HGMS, fly ash, silica fume, and commercial metakaolin studied by Ali et al , Vejmelková et al [19,20], and Ferraz et al [21] respectively, in which the tendency mentioned by Ferraz et al [21] is verified. Furthermore, HGMS presented the same tendency for higher D50.…”

Section: Pozzolanic Activity Quantification Of Hollow Glass Microspheresmentioning

confidence: 57%

“…Before testing, a thin layer of gold coating was applied on the samples. [19,20] for silica fume and pulverized fly ash are, respectively, 550 and 1600 CH milligrams per SCM gram. Besides, for commercial metakaolin studied by Ferraz et al [21], values ranging from 900 mg CH/g to 1600 mg CH/g were obtained.…”

Section: Pozzolanic Activity Quantification Of Hollow Glass Microspheresmentioning

confidence: 99%

“…Figure 4: Modified Chapelle test results for HGMS and reference SCM with varying D50 diameter[19][20][21] …”

mentioning

confidence: 99%

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Pozzolanic activity quantification of hollow glass microspheres

Martin

Scarponi

Villagrán

et al. 2021

Cement and Concrete Composites

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Hollow glass microspheres (HGMS) have been widely used in the hydrocarbon industry for cementing wells with low-density slurries. These consist of amorphous siliceous hollow spheres filled with gas, providing a low-density material with high strength. The present study aims to characterize the interaction between HGMS and the cement paste, focusing mainly on the development of the pozzolanic activity, given the nature of amorphous silica. Therefore, two HGMS of different crush strength levels were studied. HGMS were used as a replacement of total cementitious binder at 10% by weight of cement. The pozzolanic activity was measured within the modified Chapelle test, the portlandite quantification from thermogravimetric analysis, and the strength activity index. Additionally, isothermal calorimetry analysis, X-ray diffraction patterns and scanning electron microscopy images were obtained. Results demonstrated that HGMS interact with the cement paste initially as nucleation agents and later with a pozzolanic reaction, presenting an activity comparable to that of metakaolin or fly ash.

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Section: Pozzolanic Activity Quantification Of Hollow Glass Microspheresmentioning

confidence: 57%

Section: Pozzolanic Activity Quantification Of Hollow Glass Microspheresmentioning

confidence: 99%

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Pozzolanic activity quantification of hollow glass microspheres

Martin

Scarponi

Villagrán

et al. 2021

Cement and Concrete Composites

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“…As NBBRI Pozzolan (MCC) was never used for HPC development before, the comparison with other researchers' results had to be done with similar compositions. Vejmelková et al [46] prepared a ternary HPC mix containing 10-60% CEM I, 52.5 R cement class replaced with an industry prepared calcined Czech claystone calcined at a maximum temperature of 700 • C and silica fume with a target design strength of 120 MPa. The XRD analysis revealed that the mineralogical compositions of the clay were mostly kaolinite and illite.…”

Section: Compressive Strength Of Hpc With MCCmentioning

confidence: 99%

Effect of KyAl4(Si8-y) O20(OH)4 Calcined Based-Clay on the Microstructure and Mechanical Performances of High-Performance Concrete

et al. 2021

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The work described in this paper has been performed to determine the potential use of meta-illite (KyAl4(Si8-y) O20(OH)4) calcined clay (MCC) as a supplementary cementitious material (SCM) in a binary Portland cement (PC) for high-performance concrete (HPC) production. To obtain the properties of the cementitious materials, the chemical composition, mineral phases, morphology, calcination efficiency and physical properties were quantitatively analysed using the advanced techniques of X-ray fluorescence (XRF), scanning electron microscopy/energy dispersive X-ray (SEM/EDX), X-ray diffraction (XRD), Fourier transform infrared/attenuated total reflection (FTIR/ATR), thermogravimetric analysis (TGA), laser particle sizing and Brunauer–Emmett–Teller (BET) nitrogen absorption method. The MCC’s effect on the workability and mechanical properties (compressive, splitting tensile and flexural strengths) and microstructure (morphology and crystalline phases) of hardened MCC-based HPCs were determined. The XRF result shows that the oxide composition of MCC confirmed the pozzolanic material requirements with recorded high useful oxides content. At the same time, the SEM image presents particles of broad, solid masses with a wider surface area of irregular shape. The XRD results show that the MCC was majorly an illite-based clay mineral calcined at a maximum temperature of 650 °C, as revealed by the TGA. The MCC addition increases the slump flow of HPCs at 5–15% cement replacement. The MCC incorporation at 10% cement replacement best improved the porosity of HPCs at a later age resulting in increased mechanical and microstructural properties of tested samples. Therefore, it is recommended that MCC addition within 10% cement replacement be adopted for low W/B Class I HPC at no deleterious results on mechanical and microstructural properties of the concrete.

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“…Industrial waste ashes : FA [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ], coal bottom ash [ 28 ], industrials slags [ 3 , 20 , 29 , 30 , 31 , 32 , 33 , 34 ], silica fume [ 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ], artificial pozzolans (calcined clays [ 34 , 43 , 44 , 45 ], ceramic residues [ 46 , 47 ], sedimentary rocks containing clay minerals and burned bauxites [ 48 , 49 , 50 ]), natural pozzolans (volcanic tuffs/zeolites [ 51 , 52 ], siliceous such as opal and diatomaceous earth [ 53 , 54 , 55 , 56 , 57 ], and volcanic glasses such as volcanic ashes [ 58 , 59 , 60 , 61 ,…”

Section: Introductionmentioning

confidence: 99%

Incorporation of Alkali-Activated Municipal Solid Waste Incinerator Bottom Ash in Mortar and Concrete: A Critical Review

Kurda

2020

Materials

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In the light of one of the most common waste management issues in urban areas, namely the elimination of municipal solid waste (MSW; about 486 kg of the waste per capita were generated in the EU in 2017), this study discusses one technique as an outlet in the construction industry for the by-product of the waste’s incineration in energy recovery facilities (i.e., MSW incinerator bottom ash—MIBA). There have been some investigations on the use of MIBA as partial replacement of cement to be used in cementitious composites, such as concrete and mortars. However, the waste’s incorporation ratio is limited since further products of hydration may not be produced after a given replacement level and can lead to an unsustainable decline in performance. In order to maximize the incorporation of MIBA, some research studies have been conducted on the alkali activation of the waste as precursor. Thus, this study presents an extensive literature review of the most relevant investigations on the matter to understand the material’s applicability in construction. It analyses the performance of the alkali-activated MIBA as paste, mortar, and concrete from different perspectives. This literature review was made using search engines of several databases. In each database, the same search options were repeated using combinations of various representative keywords. Furthermore, several boundaries were made to find the most relevant studies for further inspection. The main findings of this review have shown that the chemical composition and reactivity of MIBA vary considerably, which may compromise performance comparison, standardization and commercialization. There are several factors that affect the performance of the material that need to be considered, e.g., type and content of precursor, alkaline activator, curing temperature and time, liquid to solid ratio, among others. MIBA-based alkali-activated materials (AAM) can be produced with a very wide range of compressive strength (0.3–160 MPa). The main factor affecting the performance of this precursor is the existence of metallic aluminum (Al), which leads to damaging expansive reactions and an increase in porosity due to hydrogen gas generation stemming from the reaction with the alkaline activator. Several approaches have been proposed to eliminate this issue. The most effective solution was found to be the removal of Al by means of eddy current electromagnetic separation.

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Effect of calcined Czech claystone on the properties of high performance concrete: Microstructure, strength and durability

Cited by 24 publications

References 28 publications

Pozzolanic activity quantification of hollow glass microspheres

Pozzolanic activity quantification of hollow glass microspheres

Effect of KyAl4(Si8-y) O20(OH)4 Calcined Based-Clay on the Microstructure and Mechanical Performances of High-Performance Concrete

Incorporation of Alkali-Activated Municipal Solid Waste Incinerator Bottom Ash in Mortar and Concrete: A Critical Review

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