Supersulfated cements based on pumice with quicklime, anhydrite and hemihydrate: Characterization and environmental impact

Cabrera-Luna, K.; Maldonado-Bandala, Erick; Nieves-Mendoza, Demetrio; Castro-Borges, P.; Perez-Cortes, Pedro; Escalante-Garcı́a, J.I.

doi:10.1016/j.cemconcomp.2021.104236

Cited by 37 publications

(18 citation statements)

References 69 publications

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“… 52 Another optimum compound detected in CPC is calcium sulfate (anhydrite), which is reported to induce the hydration of C3S. 6 and for having adhesive and cohesive properties that are capable of binding together mineral fragments in the presence of water, therefore helping to form a more compact and dense cement mortar. The presence of the mineral hatruite, which is a form of tricalcium silicate, could be assumed to have the same effect.…”

Section: Resultsmentioning

confidence: 99%

“…Among the widely used cementitious materials are concrete, mortars, and pastes, however, each Portland clinker manufactured ton of cement is responsible for high energy consumption and emission of 0.7 and 0.8 ton of CO 2 , approximately. [4][5][6] Also, it is very probable that these values will increase each year as the construction industry aims to renewed and innovative infrastructure to meet the expectations of society. In an effort to reduce these values and lower the impact of global warming, different countries around the world have replaced the OPC with the CPC (Composite Portland Cement) which entails important changes in the source of primary substance during the elaboration of the cement.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of cement mortars with regional organic and inorganic additives

Soria-Castro,

Genescá-Llongueras,

Hernández-Bolio

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of cement mortars with regional organic and inorganic additives

Soria-Castro,

Genescá-Llongueras,

Hernández-Bolio

et al. 2024

RSC Adv.

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“… 18 Cabrera-Luna et al used CaO as an activator to produce large amounts of AFt and calcium silicate hydrate (C–S–H) from cementitious materials. 20 Chen et al achieved a good solidification effect of heavy metals by adding CaO to form AFt and C–S–H in a fly ash-based polymer. 21 Li et al proved the good solidification effect of AFt on As.…”

Section: Introductionmentioning

confidence: 99%

“…The effective activation of aluminosilicate and calcium in industrial byproducts can trigger the formation of AFt and calcium sulfoaluminate monohydrate (AFm), which improve the ability of cementitious materials to solidify As . Cabrera-Luna et al used CaO as an activator to produce large amounts of AFt and calcium silicate hydrate (C–S–H) from cementitious materials . Chen et al achieved a good solidification effect of heavy metals by adding CaO to form AFt and C–S–H in a fly ash-based polymer .…”

Section: Introductionmentioning

confidence: 99%

Long-Term Stabilization/Solidification of Arsenic-Contaminated Sludge by a Blast Furnace Slag-Based Cementitious Material: Functions of CaO and NaCl

Quan

Yang

et al. 2022

ACS Omega

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Arsenic is a kind of element widely distributed in the environment that may pose a threat to the ecological environment and human health, while effective remediation and sustainable utilization of arsenic-containing sludge is a challenge. Based on stabilization/solidification blast furnace slag-based cementitious materials (BCMs), this study innovatively proposes to improve the arsenic (As) solidification efficiency and long-term stability by using the activation mode of CaO and NaCl. The effects of different factors on the properties of the BCM were measured by unconfined compressive strength (UCS) tests, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The long-term stability and safety of the BCM were verified by leaching toxicity and improved three stage continuous extraction method (BCR) tests. Experimental results show that the addition of CaO provides conditions for the formation of ettringite (AFt), thus promoting the crystal growth of AFt. The addition of NaCl can promote the formation of Cl-AFt and play a good long-term stabilizing role. When the content of the alkali activator is 10% and the modulus is 1.0, the contents of CaO and NaCl are 10 and 1%, respectively. The BCM has the best efficiency in terms of UCS and As solidification. The UCS at 28 days was 5.4 MPa, and the leaching concentration of As was 0.309 mg/L, and the As solidification efficiency was up to 99.9%. In the improved BCR test, the proportions of residual and oxidizable states of arsenic increased by 19.6 and 13.5%, respectively, and the stability of heavy metals improved. These findings show that the BCM has good long-term stability and safety. Overall, this study shows that CaO and NaCl significantly increase the output of AFt and achieve the purpose of efficient and stable solidification of As by the BCM.

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“…It is essential to understand the basic characteristics of limestone (e.g., geological characteristics) for achieving the good quality of quicklime and satisfying the demand of the industry. The continuous growth of global industries has led the industry itself and academy to focus on developing alternative cement, material constructions, additives, and other demanding materials, involving reduced energy demand and greenhouse gas emissions (Cabera-Luna et al, 2021). Therefore, escalating the knowledge of limestone and quicklime characteristics is challenging to reach sustainable development for industries.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Calcination Temperature on The Quality of Quicklime from Different Limestone Mines in West Sumatera, Indonesia

Desmiarti

Sari

Firdaus

et al. 2022

J. appl. agricultural sci. technol.

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Quicklime is a widely used industrial chemical and its characteristics may be affected by the limestone characteristics and calcination temperature. The present study investigated the quicklime characteristics obtained from limestone after calcination at different temperatures (800, 900, and 1000 ℃) from six geological-different mines in West Sumatera, Indonesia. X-ray fluorescence (XRF) analysis was performed to characterize the elemental compositions in limestone and quicklime. The stoichiometric evaluation was examined to compare the obtained carbon dioxide (CO2) from experimental and theoretical results during calcination. Based on elemental composition from XRF analysis, all the investigated limestones are very pure limestones, with impurities of less than 1%. The level of calcium oxide (CaO) after calcination at 1000℃ increased to more than 90% for all investigated limestone. The obtained CaO and CO2 mass after calcination at 1000℃ for 5 h were more than 70 and 60 grams, respectively. However, the experimental results on CaO and CO2 mass were 5–12% less than theoretical mass, reflecting the partial decomposition of calcium carbonate during the calcination process.

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Supersulfated cements based on pumice with quicklime, anhydrite and hemihydrate: Characterization and environmental impact

Cited by 37 publications

References 69 publications

Characterization of cement mortars with regional organic and inorganic additives

Characterization of cement mortars with regional organic and inorganic additives

Long-Term Stabilization/Solidification of Arsenic-Contaminated Sludge by a Blast Furnace Slag-Based Cementitious Material: Functions of CaO and NaCl

The Effect of Calcination Temperature on The Quality of Quicklime from Different Limestone Mines in West Sumatera, Indonesia

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