Calcined illite-chlorite shale as supplementary cementing material: Thermal treatment, grinding, color and pozzolanic activity

Irassar, Edgardo F.; Bonavetti, Viviana L.; Castellano, Claudia C.; Trezza, Mónica Adriana; Rahhal, Viviana Fátima; Cordoba, Gisela; Lemma, Roxana

doi:10.1016/j.clay.2019.105143

Cited by 62 publications

(33 citation statements)

References 39 publications

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“…The OH stretching of the inner surface and the outer hydroxyl groups are observed at 3683, 3623 and 3534, 3414 cm −1 for sandwiched octahedral sheets between two layers for kaolinites tetrahedral-octahedral-tetrahedral structure of illite. The high region with a band at 3623 cm −1 resulted from the low frequency of kaolinites' inner surface hydroxyls, indicating kaolinite and illite minerals sensitive to cation exchange [15]. The bands at 1651 cm −1 are due to the deformation of water molecules.…”

Section: Physical Propertiesmentioning

confidence: 99%

“…Also, Irassar et al [15] experimentally studied the thermal transformation of raw illitechlorite-based clay to understand the material production's best calcination conditions for concrete use. Similarly, Laidani et al [16] used bentonite-rich calcined clay as an SCM to improve self-compacting concrete's fresh and hardened (i.e., mechanical and durability) properties.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Physical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

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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“…Ultrafine grinding involves the application of strong mechanical forces that distort the crystal structure of the mineral, rapidly resulting in lattice dislocations, defects, and recrystallization, which improves the reaction activity [9][10][11][12]. On the other hand, ultrafine grinding increases the specific surface area of the admixture, thereby enhancing micro aggregation and nucleation effects in the cement matrix [13][14][15]. In addition, ultra-high-performance concrete (UHPC) has attracted increasing attention due to it meeting the requirements for special concrete structures such as super high-rise buildings and long-span bridges [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ultrafine Metakaolin on the Properties of Mortar and Concrete

et al. 2021

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This study investigated the influence of ultrafine metakaolin replacing cement as a cementitious material on the properties of concrete and mortar. Two substitution levels of ultrafine metakaolin (9% and 15% by mass) were chosen. The reference samples were plain cement concrete sample and silica fume concrete sample with the same metakaolin substitution rates and superplasticizer contents. The results indicate that simultaneously adding ultrafine metakaolin and a certain amount of polycarboxylate superplasticizer can effectively ensure the workability of concrete. Additionally, the effect of adding ultrafine metakaolin on the workability is better than that of adding silica fume. Adding ultrafine metakaolin or silica fume can effectively increase the compressive strength, splitting tensile strength, resistance to chloride ion penetration and freeze–thaw properties of concrete due to improved pore structure. The sulphate attack resistance of mortar can be improved more obviously by simultaneously adding ultrafine metakaolin and prolonging the initial moisture curing time.

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“…Th e us e of SC Ms to re pl ac e cl in ke r ca n im pr ov e th e pr op er ti es of th e ce me nt , th us tr an s fo rm in g it in to an ex ce l le nt qu al it y ma te r ia l [ 9 -11 ]; ca l ci ne d cl ay s fa ll in to th is ca t e go ry . Se v er al in ve s ti ga ti on s ha ve do c u me nt ed im pr es si ve re su lt s by co m bi n in g ca l ci ne d cl ay s wi th wa st e [ 12 ], se v er al ty pe s of wa st es [ 13 ], se d i me nt s [ 14 ] an d sh al es [ 15 ], in cl ud in g ot he r ma te ri al s su ch as st ee l fi be rs to in cr ea se me ch an i ca l st re ng th [ 16 ].…”

Section: Introductionunclassified

Valorization of non-beneficiated clays as supplementary cementitious materials in the production of cement-based mortar

Oliveira

Souza

Cruz

et al. 2021

Journal of Building Engineering

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Va lo ri za ti on of no n -be ne fi ci at ed cl ay s as su pp le me nt ar y ce me nt it io us ma te ri al s in th e pr od uc ti on of ce me nt -ba se d mo rt ar V. M. de Ol iv ei ra a , F. de So uz a b , R. T. da Cr uz a , b , L. G. Py b , A. P. Ki rc hh ei m b , S. R. Br ag an ça a , * a Ma te ri al s De pa rt me nt an d PP GE M -Fe de ra l Un iv er si ty of Ri o Gr an de do Su l -RS , Br az il b Gr ad ua te Pr og ra m on Ci vi l En gi ne er in g: Co ns tr uc ti on an d In fr as tr uc tu re -Fe de ra l Un iv er si ty of Ri o Gr an de do Su l -RS , Br az il ARTICLE INFO Ke y wo rd s : Cl ay Po z zo la ni c ac ti v it y Bl en de d ce me nt s SC MsEn vi ro n me n ta l be n e fi ts ABSTRACT Fo ur ka ol in it ic cl ay s an d on e ar gi ll it e (c oa l mi n in g wa st e) we re te st ed fo r us e as su p pl e me n ta ry ce me n ti ti ou s mate ri al s (S CM s) . Th ei r ma in pr op er ti es we re ev al u at ed , wi th ou t un de r go in g mi n er al be n e fi ci a ti on . Al th ou gh cl ay im pu ri ti es , su ch as Fe 2 O 3 , Ti O 2 , an d hi gh le v el s of qu ar tz , et c. , ca n pr e ve nt or hi n de r th ei r us e in so me in du s tr ia l se c to rs , it ma y be le ss of an is su e fo r ap pl i ca ti on as SC Ms as su ch im pu ri ti es of te n do no t ch an ge po z zo la ni c ac ti vit y. Ci vi l co n st ru c ti on ha s us ed cl ay s wi th di f fe r en t mi n er al og y an d ob ta in ed fr om di f fe r en t lo ca ti on s, bu t th e ka ol in it ic cl ay is th e mo st su it ab le fo r SC Ms in Po rt la nd ce me nt co m po si ti on . Ra w cl ay pr op er ti es do pl ay a ke y ro le in te rm s of th er ma l be ha v io r an d po z zo la ni c pr op er ti es , ho w ev er . Th e cu r re nt re se ar ch re po rt ed he re in ev alu at ed th ei r ap pl i ca ti on to SC M; th es e cl ay s we re ch ar ac te r iz ed in te rm s of ch em i ca l co m po si ti on , mi n er al ph as es , pa r ti cl e si ze di s tr i b u ti on , th er mo gr av im e tr y an d po z zo la ni c ac ti v it y. Af te r ca l ci na ti on , th e ra pi d co ol in g of th e cl ay s pr ov ed to be fa vo r ab le to re du c in g pa r ti cl e si ze an d in cr ea s in g po z zo la ni c ac ti v it y − es pe ci al ly th os e cl ay s ri ch in qu ar tz − wh en th ey we re ca l ci ne d at th e hi gh es t te st ed te m pe r a tu re (8 00 °C ). Pe r fo r ma nc e in de x (P I) of mo r ta rs wi th 25 % of ca l ci ne d cl ay s re pl ac e me nt by ce me nt sh ow ed co n si d er ab le co m pr es si ve st re ng th im pr ov eme nt fo r al l ca l ci ne d cl ay sa m pl es ra ng in g fr om 10 6% to 13 2% . Th is de mo n st ra te d th at lo w -co st cl ay s co ul d repl ac e cl in ke r wi th te ch ni ca l, en vi ro n me n ta l, an d ec o no mi c be n e fi ts , es pe ci al ly in te rm s of th ei r av ai l ab il it y.* Co rr es po nd in g au th or . Av . Os va ld o Ar an ha , 99 /7 11 , 90 03 5 -19 0, Po rt o Al eg re -RS , Br az il .E -ma il ad dr es s: sa ul or b@ uf rg s. br (S .R . Br ag an ça ).

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Calcined illite-chlorite shale as supplementary cementing material: Thermal treatment, grinding, color and pozzolanic activity

Cited by 62 publications

References 39 publications

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

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

Effect of Ultrafine Metakaolin on the Properties of Mortar and Concrete

Valorization of non-beneficiated clays as supplementary cementitious materials in the production of cement-based mortar

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