In situ full view of the Portland cement hydration by confocal Raman microscopy

Torres-Carrasco, M.; Campo, Adolfo del; Rubia, M.A. de la; Reyes, E.; Moragues, Amparo; Fernández, J.F.

doi:10.1002/jrs.5574

Cited by 37 publications

(23 citation statements)

References 41 publications

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“…In the case of CEM I (Figure 3a), it is observed how, as the hydration times increase, the compression also strength increases. This is due to the hydration process of the cement and the progressive formation of the C-S-H gel as well as secondary reaction products, such as portlandite or ettringite, among others, achieving final strengths at 28 days of curing around 45 MPa [26,27]. Finally, Figure 3d shows the results of the hybrid systems manufactured with the ceramic industry wastes (HWT and HPT).…”

Section: Mechanical Behavior and Total Porositymentioning

confidence: 98%

Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties

et al. 2020

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One of the most polluting industries is the cement industry and, for this reason, alternative lines of research recommend the use of substitute materials for traditional Portland cement. This study proposes the use of industrial (slag and fly ash) and ceramic wastes for the total or partial replacement of Portland cement in the manufacturing of both alkaline-activated and hybrid cements. To carry out this study and evaluate the behavior of the proposed materials, different mortars were manufactured: Portland cement (CEM I), two alkaline-activated slag systems and six hybrid systems, with an 80–20% waste-to-Portland-cement ratio for all the proposed wastes. An assessment of the pozzolanic activity was carried out for the different materials. The behavior of all the systems regarding mechanical resistance and durability to abrasion was studied. All the proposed materials, especially those with ceramic wastes, showed pozzolanic activity and suitable characteristics for use in the manufacturing of alternative cements. The mortar made of slag activated with waterglass presented the highest mechanical strength and lowest porosity, but the hybrid materials presented competitive results. After being subjected to the Böhme abrasion test, their effectiveness as substitutes for Portland cement is reiterated, some of them improving their durability to wear.

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Section: Mechanical Behavior and Total Porositymentioning

confidence: 98%

Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties

et al. 2020

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“…Raman spectroscopy is a simple and effective technique to explore cement chemistry [ 36 , 37 ]. The active phase blends of cement show higher pozzolanic activity and has been extensively explored in the recent scientific literature of cement mortars [ 38 , 39 , 40 , 41 , 42 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of Lime and Volcanic Ash on the Properties of Dune Sand as Sustainable Construction Materials

et al. 2021

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This study focused on evaluating dune sand stabilized with lime and volcanic ash as base course materials in engineering construction. Dune sands are found in Saudi Arabia in huge quantities. Due to the high demand for construction materials, this makes them highly suitable for construction. A testing program was designed to investigate the effect of adding different percentages by weight of lime (L: 0, 2, 4, and 6%) and volcanic ash (VA: 0, 1, 3, and 5%) on the engineering properties of the stabilized mixture. Unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were conducted. In addition, Raman spectroscopy and laser-scanning microscopy (LSM) tests were performed to explore the chemical characteristic, packing, and structure of the mixture. The results showed that the UCS, CBR, and the Young’s modulus (Es) of the treated dune sand increased with the increase in percentage of both stabilizers. Furthermore, LSM images of mortar blended with intermediate L-to-VA blend ratio ≈0.55 (L: 6% and VA: 5%) exhibit compact packing of sand grains, indicating strong adhesion and higher cementing value. The results of the study are promising and encourage using the treated dune sand in engineering construction even with a low percentage use of lime (2%) and volcanic ash (1–3%) as stabilizers.

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“…Sodo et al [ 134 ] employed Raman and time of flight secondary ion mass spectrometry to answers specific conservation questions regarding Bosch painting of Saint Wilgefortis Triptych. Torres‐Carrasco et al [ 135 ] used confocal Raman microscopy to study the in situ full view of the hydration of Portland cement. Their study opens a new approach to understanding the various mechanisms involved in the hydration of Portland cement.…”

Section: Art and Archaeologymentioning

confidence: 99%

Recent advances in linear and nonlinear Raman spectroscopy. Part XIV

Nafie

2020

J Raman Spectroscopy

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This article is an overview of advances in Raman spectroscopy published in 2019 in the Journal of Raman Spectroscopy (JRS) and, in addition, trends over the past decade across journals that have published papers important to the field of Raman spectroscopy. The trends are based on statistical data of article counts obtained from Clarivate Analytic's Web of Science Core Collection by year and by subfield of Raman spectroscopy. Normally in this review, coverage would be provided for presentations involving Raman Spectroscopy at the following four international conferences previously scheduled for this year: the

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In situ full view of the Portland cement hydration by confocal Raman microscopy

Cited by 37 publications

References 41 publications

Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties

Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties

Influence of Lime and Volcanic Ash on the Properties of Dune Sand as Sustainable Construction Materials

Recent advances in linear and nonlinear Raman spectroscopy. Part XIV

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