The possibility of using dredging sludge in manufacturing cements: Optimization of heat treatment cycle and ratio replacement

Chikouche, Mohamed Aziz; Ghorbel, Elhem; Bibi, M.

doi:10.1016/j.conbuildmat.2015.12.128

Cited by 47 publications

(21 citation statements)

References 27 publications

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“…Differential thermal analysis (DTA) combined with thermogravimetric analysis (TGA) is more suitable for studying hydration at later stages. This technique has been applied to quantify the portlandite in cement/silica fume, metakaolin, fly ash, blast furnace slag, and calcined clay system [10][11][12][13]. They also reported how the portlandite of pozzolanic addition contributes to the hydration reaction of cement [14,15].…”

Section: Introductionmentioning

confidence: 99%

The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement

Boualleg

Bencheikh

Belagraa

et al. 2017

Advances in Materials Science and Engineering

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The aim of this work is to better understand the physical and chemical phenomena involved in hydrated mix (clinker + addition) during the natural carbonation process, to characterize cement with supplementary cementitious materials (SCMs) under various curing environment. The prepared cement pastes were characterized by thermogravimetric analysis. The results showed a considerable influence of the environment on the properties of mortars and cement and a perfect correlation between compressive strength, natural carbonation, nonevaporable water, and portlandite content. It was observed that the reduction of the curing period makes the mortars more sensitive. The kinetics of process was evaluated from Ca(OH)2 content and nonevaporable water contained in mortars. These two parameters reflect the hydration progress of the water/cement ratio studied. The weight loss due to Ca(OH)2 decomposition, calculated by DTA/TG analysis, shows the effect of the pozzolanic reaction and the natural carbonation. The supplementary cementitious materials (SCMs) play a considerable role in the slowing down of the aggression environment.

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Section: Introductionmentioning

confidence: 99%

The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement

Boualleg

Bencheikh

Belagraa

et al. 2017

Advances in Materials Science and Engineering

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“…A typical peak related to CSH and CA 2 SH 4 (gismondine) was detected from 120 to 180 °C [44]. However, below 200 °C, the peaks of CSH, ettringite and chemically bound water overlap [45]. The formation of superimposed peaks in the DTG plot is accompanied by a weight loss in the TG plot, similar for both REF and SUB mortars.…”

Section: Resultsmentioning

confidence: 78%

“…It was also seen that the substitution of 25% of Portland cement by RCW reduced the intensity of the two most intense peaks of calcium hydroxide (2θ= 18.08° and 34.12°). It should be pointed out that the hydration products formed from the pozzolanic reaction are resistant to weathering, such as sulfate attack [7,[40][41][42][43][44][45].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the pozzolanic activity of red ceramic waste using mechanical and physicochemical methods

et al. 2019

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Alternative cementitious materials can potentially reduce the environmental impact of the extraction of lime and the hazardous production of Portland cement. Red ceramic waste can be comminuted to fine particles with both filler and pozzolanic activity and used in Portland and lime mortars. This study presents the evaluation of the pozzolanic activity of red ceramic waste by physicochemical and mechanical methods using Portland cement and lime mortars. The evaluated waste depicted high pozzolanic activity and absence of Na2O, and consumed 32% of CaO according to the adapted Chapelle test. The compressive strength recorded in the pozzolanic activity test with lime was 7.1 MPa at 7 days. Moreover, the compressive strength of mixes with 25% replacement of Portland cement by red ceramic waste was 11% higher than the reference waste-free composition. The red ceramic waste depicted adequate characteristics to be used in the production of large volumes of Portland and lime mixes commonly employed in the civil construction.

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“…Faydalı kullanım alternatifleri üç ana grupta toplanmaktadır [16]; a) mühendislik kullanımı (arazi reklamasyonu [17], kumsal beslenmesi [18], kıyı koruma, deponi sahası günlük ara örtü/geçirimsiz tabaka [19,20]); b) çevresel restorasyon (sulak alan oluşturma/iyileştirme [21], su ürünleri yetiştiriciliği [22] vb.) ve c) zirai/ürün kullanımı (yüzey toprağı [23,24], karayolu dolgusu [10,25], tuğla [26,27], seramik [28,29], hafif agrega [30,31], hazır beton [32], beton parke taşı [33,34], çimento [35,36] [14,37]. Çeşitli araştırmacılar en uygun faydalı kullanım alternatifini seçebilmek için çalışmalarında sediman ve DTM'lerin (Fransa Dunkirk Limanı deniz sedimanı [10,38], Tunus Rades ve Gabes Limanları deniz sedimanı [39], İrlanda deniz dibi tarama malzemesi [16], Malezya deniz sedimanı [40]) karakterizasyonunu ve dolayısıyla çevresel etkilerini incelemişlerdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Türkiye'deki deniz dibi tarama malzemelerinin faydalı kullanım öncesi çevresel etkilerinin belirlenmesi: Ticari limanlar & balıkçı barınakları

Başar¹,

Güzel²,

Erdoğan³

et al. 2017

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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The possibility of using dredging sludge in manufacturing cements: Optimization of heat treatment cycle and ratio replacement

Cited by 47 publications

References 27 publications

The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement

The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement

Evaluation of the pozzolanic activity of red ceramic waste using mechanical and physicochemical methods

Türkiye'deki deniz dibi tarama malzemelerinin faydalı kullanım öncesi çevresel etkilerinin belirlenmesi: Ticari limanlar & balıkçı barınakları

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