Use of asbestos-free fiber-cement waste as a partial substitute of Portland cement in mortar

Bouharoun, Samir; Leklou, Nordine; Mounanga, Pierre

doi:10.1617/s11527-014-0264-0

Cited by 6 publications

(2 citation statements)

References 9 publications

(8 reference statements)

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“…Schoon et al [8] dealt with waste fibre cement, which they proposed as an alternative raw material for clinker production on an industrial scale. Bouharoun et al [9] tested fibre cement waste as a substitute for Portland cement in the production of mortar. In a study [10], recycled fibre cement was used as a fine aggregate in lightweight geopolymer mortars.…”

Section: Introductionmentioning

confidence: 99%

Using shredded fibre cement recyclate to produce new innovative fibre cement boards

Khongová,

Frank,

Krejčí Kotlánová

et al. 2024

J. Phys.: Conf. Ser.

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The study investigated the effect of the addition of crushed recyclate on the final properties of fibre cement boards. In some fibre cement board production technologies, waste in the form of solid trimmings accounts for up to 7% of total production, which is not an insignificant amount. The research aims to maximise the use of the waste generated and its effective reintegration into the production of new fibre cement boards. In the experimental work, shredded recyclate was used in varying quantities to replace expanded perlite. The results obtained show that the reuse of shredded recyclate has a minimal impact on the observed physical and mechanical properties. A similar trend was found when evaluating the durability tests. The proposed solution for the reuse of recyclate can be considered successful both in terms of production technology and the properties of the fibre cement boards achieved.

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Section: Introductionmentioning

confidence: 99%

Using shredded fibre cement recyclate to produce new innovative fibre cement boards

Khongová,

Frank,

Krejčí Kotlánová

et al. 2024

J. Phys.: Conf. Ser.

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“…In the last decade, a growing number of waste types have been studied with promising results, many of which are centered in those whose chemical composition is partially comprised of phyllosilicates. The mineral kaolinite (K) is one of the earliest and most important phyllosilicates studied for its use in cements; its thermal dehydroxilation produces the activated product metakaolin (MK), a highly reactive pozzolanic material.…”

Section: Introductionmentioning

confidence: 99%

Characterization of LDH (phyllosilicate/carbonate) type compounds formed in the pozzolanic reaction of phyllosilicate‐rich industrial waste

et al. 2019

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Reutilization of industrial waste products as cement additives yields a number of secondary materials, yet their identification is not always trivial. Confirmation of the formation of a LDH-type (phyllosilicate/carbonate) material is the main purpose of this study. Mineralogically, organic and inorganic compounds form some industrial wastes, among which the phyllosilicates are prominent. Crystalline and amorphous hydrated phases appeared during the pozzolanic reaction in a dehydroxylated phyllosilicate/lime system, whose controlled activation yielded dehydroxylated products with high pozzolanic properties. The LDH-type (phyllosilicate/carbonate) material was one of the reaction products; this material could be considered as the superposition type 1:1 of tetrahedral layers of silicon and aluminum and octahedral layers of aluminum (dehydroxylated kaolinite), generating a positive charge in the interlaminar region compensated by carbonate anions with a basal spacing (001) measured by XRD at 7.57Å. Therefore, several techniques were used to determine whether they could be included in the structural group named Layered Double Hydroxides (LDHs), as they are, too, laminar layers of oxides and hydroxides with a positive laminar charge in the interlayer region compensated by the presence of anions with similar basal spacing. In this research, the effects of activation temperature and calcite proportion were analyzed on the hydrated phases formed after 28 days of pozzolanic reaction in a metakaolin (MK)/lime system. The MK was obtained from a mix of 1:1; 2:1 and 3:1 kaolinite:calcite mixture, thermally activated at 750°C for 2 hours, comparing it with kaolinite activated at 600°C for 2 hours. As the most LDH-rich sample, the 1:1 LDH-type (phyllosilicate/carbonate) phase was characterized using XRD, SEM-EDX, HRTEM-EDX, FTIR, NMR-MAS, and Raman spectroscopy. K E Y W O R D S calcium silicate hydrate, LDH type (phyllosilicate carbonate), metakaolin, Portland cement, SEM, transmission electron microscopy, X-ray diffraction | 4991 SÁNCHEZ Et al. How to cite this article: Sánchez I, Ramírez M, Casas Angulo M, et al. Characterization of LDH (phyllosilicate/carbonate) type compounds formed in the pozzolanic reaction of phyllosilicate-rich industrial waste. J Am Ceram Soc. 2019;102:4990-4998. https://

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Investigation of microstructural and mechanical properties of partially hydrated Asbestos-Free fiber cement waste (AFFC) based concretes: Experimental study and predictive modeling

Leklou

2021

Construction and Building Materials

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Use of asbestos-free fiber-cement waste as a partial substitute of Portland cement in mortar

Cited by 6 publications

References 9 publications

Using shredded fibre cement recyclate to produce new innovative fibre cement boards

Using shredded fibre cement recyclate to produce new innovative fibre cement boards

Characterization of LDH (phyllosilicate/carbonate) type compounds formed in the pozzolanic reaction of phyllosilicate‐rich industrial waste

Investigation of microstructural and mechanical properties of partially hydrated Asbestos-Free fiber cement waste (AFFC) based concretes: Experimental study and predictive modeling

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