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Journal articles on the topic 'Monosulfoaluminate'

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1

Hajilar, Shahin, and Behrouz Shafei. "Structure, orientation, and dynamics of water-soluble ions adsorbed to basal surfaces of calcium monosulfoaluminate hydrates." Physical Chemistry Chemical Physics 20, no. 38 (2018): 24681–94. http://dx.doi.org/10.1039/c8cp03872d.

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2

Yoon, Seyoon, Juyoung Ha, Sejung Chae, et al. "Phase Changes of Monosulfoaluminate in NaCl Aqueous Solution." Materials 9, no. 5 (2016): 401. http://dx.doi.org/10.3390/ma9050401.

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3

Shi, Nan, Ya Ma, Xiang Zhang, et al. "The Effect of Calcium Sulfate on the Hydration and Properties of Red Mud-Based Calcium Ferroaluminate Cement Clinker." Materials 17, no. 20 (2024): 5064. http://dx.doi.org/10.3390/ma17205064.

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The hydration of high-alkali red mud-based ferroaluminate cement (RCFA) clinker with calcium sulfate needs to be regulated. This study explored the effects of the calcium sulfate type and dosage on the hydration and properties of high-alkali RCFA clinker. The research results show that when 4% gypsum was added, the 3 d compressive strength of cement was 39.1 MPa, and the 28 d compressive strength was 63.2 MPa. The 28 d strength increased by 61.6% compared with the 3 d strength. The properties of cement paste can be adversely affected by excessive anhydrite content. The exothermic hydration of
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4

Mesbah, Adel, Céline Cau-dit-Coumes, Guillaume Renaudin, Fabien Frizon, and Fabrice Leroux. "Uptake of chloride and carbonate ions by calcium monosulfoaluminate hydrate." Cement and Concrete Research 42, no. 8 (2012): 1157–65. http://dx.doi.org/10.1016/j.cemconres.2012.05.012.

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5

Renaudin, Guillaume, Rachid Segni, Dorota Mentel, Jean-Marie Nedelec, Fabrice Leroux, and Christine Taviot-Gueho. "A Raman Study of the Sulfated Cement Hydrates: Ettringite and Monosulfoaluminate." Journal of Advanced Concrete Technology 5, no. 3 (2007): 299–312. http://dx.doi.org/10.3151/jact.5.299.

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6

Jiang, Yaqing, Sijia Zhang, and D. Damidot. "Ettringite and Monosulfoaluminate in Polycarboxylate Type Admixture Dispersed Fresh Cement Paste." Advanced Science Letters 5, no. 2 (2012): 663–66. http://dx.doi.org/10.1166/asl.2012.1798.

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7

Wang, Wei, Luping Zeng, Shuang Du, Min Qiao, Junsong Chen, and Bosong Zhu. "The Influence of Alkali-Free Shotcrete Accelerators on Early Age Hydration and Property Development within Cement Systems." Materials 15, no. 19 (2022): 6907. http://dx.doi.org/10.3390/ma15196907.

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Fluoride-containing alkali-free setting accelerators are a common type of admixture used in tunnel shotcrete but few studies in the literature focus on the effect of their fluoride compounds on the setting and hardening properties of accelerated cement paste under low environment temperatures. Tunnel shotcrete in cold regions or winter construction periods would be obviously influenced by low environment temperatures, especially for its fast setting and quick support applications. The objective of this work is to evaluate the early age hydration behavior of different accelerated cement pastes
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8

Honorio, Tulio, Percy Guerra, and Alexandra Bourdot. "Molecular simulation of the structure and elastic properties of ettringite and monosulfoaluminate." Cement and Concrete Research 135 (September 2020): 106126. http://dx.doi.org/10.1016/j.cemconres.2020.106126.

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9

Yao, Wu, and Man Jian Wu. "Solubility Behavior of the Hydration Products in the Pore Solution of Hydrated Cement Pastes." Key Engineering Materials 539 (January 2013): 189–94. http://dx.doi.org/10.4028/www.scientific.net/kem.539.189.

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The concentrations of Ca, Al, Si, Na, K, SO42- and pH value in the pore solution of Portland cement were measured during the first 28 days of hydration at room temperature. A thermodynamic analysis of the elemental concentrations was used to predict saturation indices of various solid phases known to form in normal cement system. During the first 4 h the composition of pore solution is dominated by K+, Na+, SO42-and OH-. Large and rapid changes in the concentrations of Ca2+, SO42- and hydroxyl occurred between 4 h and 24 h, and thereafter the pore solution is essentially one of alkali hydroxid
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10

Zhuravel, Vitalii, Teresa Rucińska, and Olga Borziak. "Investigation of the Diffusion of Chloride Ions in Blended Cement Pastes." ce/papers 6, no. 6 (2023): 1265–68. http://dx.doi.org/10.1002/cepa.2970.

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AbstractWhen exposed to aggressive environments containing chlorides, the chlorine ion partially binds to the usual Portland cement mortar and changes its mineralogy. Chlorine ions entering the system displace sulfate from the monosulfoaluminate. Such systems form Kusel's salt at low chloride concentrations and Friedel's salt at higher concentrations. Unbound chloride ions remain dangerous for reinforcing steel, which diffuse deep into the concrete and destroy the passivating layer on the reinforcement. To assess the protective properties of concrete in relation to metal reinforcement, it is p
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11

Shiferaw, Natnael, Lulit Habte, Thriveni Thenepalli, and Ji Whan Ahn. "Effect of Eggshell Powder on the Hydration of Cement Paste." Materials 12, no. 15 (2019): 2483. http://dx.doi.org/10.3390/ma12152483.

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Eggshells are one of the solid wastes in the world and are considered hazardous according to European Commission regulations. The utilization of solid wastes, like eggshells, will help create a sustainable environment by minimizing the solid wastes that are disposed into the environment. The utilization of eggshell powder in cement also helps to reduce the carbon dioxide emissions from cement factories by reducing clinker production. In this study, the effect of eggshell powder on the hydration of cement products was investigated using X-ray diffraction (XRD), thermogravimetric analysis (TGA),
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12

Jiang, Ya Qing, Ji Yin Zhang, and Ming Zi Gong. "Action Mechanism of Sulfate Compatible Polycarboxylate Type Admixture." Advanced Materials Research 168-170 (December 2010): 1875–80. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1875.

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Interaction between cement and a kind of sulfate compatible polycarboxylate type admixture (PCA) and action mechanism of the novel water reducer were investigated. Experimental results indicate that adsorption amount of PCA on surfaces of cement particles is lower than that of polynaphthalene sulfonate condensate water reducer (PNS) because of the formation of more ettringite and calcium monosulfoaluminate, and calcium monocarboaluminate when CaCO3 presents in hydration system, even at initial period of hydration. Results from XRD analysis, derivative thermogravimetric (DTG) analysis and chemi
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13

Balde, Mamadou Yaya, Chantale Njiomou Djangang, Souleymane Balde, Eric Severin Simo Bakam, and Philippe Blanchart. "Physicomechanical Properties of Mortars Based On Ordinary Portland Cement with Bauxite as Mineral Additives." European Journal of Advanced Chemistry Research 3, no. 3 (2022): 1–12. http://dx.doi.org/10.24018/ejchem.2022.3.3.105.

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Guinea has one of the world's main reserves of bauxite that can be used as an industrial mineral to produce low-cost building materials and other parts to address the housing and industrial development difficulties in this country. In this line, mortars were manufactured by replacing 5–25 wt.% of Portland cement with raw and 600 °C calcined. Workability and setting time of fresh mortars were measured. Hard products were characterized by linear shrinkage, porosity, and structural and microstructural investigations. The two mineral additives are chemically active since they favored the reduction
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14

Meller, Nicola, Konstantinos Kyritsis та Christopher Hall. "The hydrothermal decomposition of calcium monosulfoaluminate 14-hydrate to katoite hydrogarnet and β-anhydrite: An in-situ synchrotron X-ray diffraction study". Journal of Solid State Chemistry 182, № 10 (2009): 2743–47. http://dx.doi.org/10.1016/j.jssc.2009.07.029.

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15

Blandine, A., G. Bernard, and B. Essaïd. "Use of thermodynamic chemical potential diagrams (µCaO, µCO2) to understand the weathering of cement by a slightly carbonated water." Cerâmica 54, no. 331 (2008): 356–60. http://dx.doi.org/10.1590/s0366-69132008000300014.

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Cement is a ubiquitous material that may suffer hazardous weathering. The chemical weathering of cement in natural environment is mostly characterized by the leaching of CaO and the addition of CO2. The different weathering zones that develop at the expense of the cement may be predicted by the help of chemical potential phase diagrams; these diagrams simulate the behaviour of systems open to some chemical elements. Some components have a so-called inert status, that is to say the system is closed for these components, their amount in the system remains constant; some other components have a m
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16

Wang, Ziwei, Minglei Guo, Chunlin Liu, et al. "Chloride Binding Behavior and Pore Structure Characteristics of Low-Calcium High-Strength Cement Pastes." Materials 17, no. 13 (2024): 3129. http://dx.doi.org/10.3390/ma17133129.

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While Portland cement produces large amounts of carbon dioxide, low-calcium high-strength cements effectively reduce carbon emissions by decreasing the proportion of high-calcium minerals. In order to enhance the practical application value of low-calcium high-strength cement, the effects of mineral admixtures on the chloride binding capacity and pore structure characteristics of low-calcium high-strength cement pastes were investigated by equilibrium method and mercury intrusion method. The results showed that the chloride binding capacity of low-calcium high-strength cement pastes is superio
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17

Derevianko, V. M., H. M. Hryshko, Ye I. Zaiats, and T. M. Dubov. "Theoretical and experimental justification of the principles of modifying compositions of CaO-Al2O3-SO3-H2O systems." Himia, Fizika ta Tehnologia Poverhni 16, no. 1 (2025): 51–62. https://doi.org/10.15407/hftp16.01.051.

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Creation of new varieties of standard (common) cements and special cements is one of the main directions of modern developments in the technology of production of cementing agents. In the group of special cements a special place is occupied by alumina ones, sulfoaluminate ones etc. The main research work during the development of such cements is carried out in the direction of creating new compositions providing replacement of scarce components. Providing such a material composition, the cost of compositions with properties of alumina cements is slightly higher than that of ordinary ones, but
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18

Rubinaite, Dovile, Tadas Dambrauskas, Kestutis Baltakys, Harald Hilbig, and Raimundas Siauciunas. "Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-30919-y.

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AbstractIn this study, the stability of synthetic calcium monosulfoaluminate and the reaction mechanism of its conversion into ye`elimite during the thermal treatment were examined. The monosulfoaluminate was produced referring to ye`elimite stoichiometry by applying the mechanochemical treatment (dry grinding at 900 rpm with 3 on–off cycles of 10 min) followed by the hydrothermal synthesis (for 8 h at 110 °C). The data indicated that the prepared sample consists of Ms12 (~ 54.8%), CaCO3 (~ 1.9%), Ms10.5/Hc (~ 0.7%) and amorphous content (~ 42.6%). Meanwhile, the thermal stability assessment b
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19

Wang, Yang, Yong Ge, Haibo Fang, Yupo Pan, Xin Chen, and Qinfei Li. "The Interaction between Monosulfoaluminate and Calcium Chloride Aqueous Solution." Advances in Cement Research, June 22, 2022, 1–17. http://dx.doi.org/10.1680/jadcr.21.00232.

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Scanning transmission X-ray microscope (STXM) and Ca L2,3-edge near-edge X-ray Absorption structure (NEXAFS) spectra investigate simultaneously the morphological and chemical information of various cement-based materials. The interaction between calcium chloride and monosulfoaluminate and the validation of intermediate phases were investigated. As the concentration of CaCl2 solution increases, calcium monosulfoaluminate (Ms) is converted into ettringite, Kuzel's salt (Ks) and Friedel's salt (Fs) in varying degree, while SO42- units in the ettringite and Kuzel's salt are continuously replaced b
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20

Rubinaite, D., T. Dambrauskas, K. Baltakys, and R. Siauciunas. "Challenges and insights into the hydrothermal synthesis of calcium monosulfoaluminate 12-hydrate." Journal of Thermal Analysis and Calorimetry, March 12, 2025. https://doi.org/10.1007/s10973-024-13808-y.

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21

Collin, Marie, Dale P. Prentice, Ross R. Arnold, et al. "Solubility behavior and thermodynamic modeling of sodium monosulfoaluminate (“U‐phase”) in cementitious systems." Journal of the American Ceramic Society, June 10, 2023. http://dx.doi.org/10.1111/jace.19257.

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22

McCarthy, G. J., P. J. Tikalsky, R. L. Carrasquillo, O. E. Manz, and A. Thedchanamoorthy. "Factors Affecting the Ability of a Fly Ash to Contribute to the Sulfate Resistance of Fly Ash Concrete." MRS Proceedings 136 (1988). http://dx.doi.org/10.1557/proc-136-273.

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ABSTRACTThe objective of this summary is to report on work in progress that is examining parameters, measurable through chemical and XRD analyses, that could indicate whether a fly ash will enhance, degrade or have no effect on the sulfate resistance of fly ash concrete.Mehta [1–4] has discussed the factors that contribute to attack of sulfates on fly ash concrete. As noted in his review paper on this subject in the preceding volume in this series [1], the agents responsible for concrete expansion and cracking are alumina-bearing hydrates, such as calcium monosulfoaluminate and calcium alumina
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23

Rubinaite, Dovile, Tadas Dambrauskas, Kestutis Baltakys, and Raimundas Siauciunas. "Influence of water vapour pressure on the carbonation process of calcium monosulfoaluminate 12-hydrate." Journal of Thermal Analysis and Calorimetry, May 27, 2024. http://dx.doi.org/10.1007/s10973-024-13233-1.

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24

Li, Yunyun, Siqi Zhang, Wen Ni, Jiajie Li, and Haojing Ba. "Deep insights into the interactions between monosulfoaluminate, ettringite, C-S-H, and antimony: mechanisms and microstructural alterations." Process Safety and Environmental Protection, January 2025, 106852. https://doi.org/10.1016/j.psep.2025.106852.

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25

Mohamed-Nadjib, Brahim, Mechling Jean-Michel, Janvier-Badosa Sarah, and Marchetti Mario. "Early stage ettringite and monosulfoaluminate carbonation investigated by in situ Raman spectroscopy coupled with principal component analysis." Materials Today Communications, February 2023, 105539. http://dx.doi.org/10.1016/j.mtcomm.2023.105539.

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26

Diamond, Sidney, and David Bonen. "A Re-Evaluation of Hardened Cement Paste Microstructure Based on Backscatter Sem Investigations." MRS Proceedings 370 (1994). http://dx.doi.org/10.1557/proc-370-13.

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AbstractBackscattered electron imaging of polished cement paste specimens permits a re-evaluation of structural details of hydrated cement paste at the gim level. The primarily microstructural units comprise a highly porous groundmass and large distinct grains (“phenograins”) set in it. The groundmass is composed of several kinds of fine particles, with a significant content of easily detected gross pores. Phenograins are primarily large clinker grains hydrating in-situ, but may be distinct deposits of CH, or may be mineral admixture grains. Detailed EDS analyses indicated that hydrating cemen
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27

Zenieris, Petros, and Joakim G. Laguros. "Fly Ash As A Binder in Aggregate Base Courses." MRS Proceedings 113 (1987). http://dx.doi.org/10.1557/proc-113-231.

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ABSTRACTThe benefit of adding up to 35 wt% Class C high calcium fly ash to various types of fine and coarse aggregate pavement mixes is described and quantified. The mixes, which were compacted to maximum dry density at optimum moisture content, had variable compressive strengths during the first 28 days of curing; after that they assumed a relatively uniform pattern of strength gain reaching values as high as 11 MPa (1600 psi). Mixes containing 15% fly ash gave unacceptably low strengths. XRD measurements indicated massive formation of ettringite, transforming to monosulfoaluminate and the po
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28

Zenieris, Petros E., and Joakim G. Laguros. "Similarities and Differences in Shale, Aggregate Mixes and Concrete Containing Fly Ash." MRS Proceedings 136 (1988). http://dx.doi.org/10.1557/proc-136-207.

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ABSTRACTFly ash technology has been very effective in providing stability in roadway base courses composed either of shale or aggregate materials, and also in partly replacing Portland cement in concrete. X-ray diffractometry and scanning electron microscopy observations indicate that there are certain similarities among these three types of mixes concerning the hydration process; on the other hand, there is evidence of distinct differences in the hydration products which are found to act either as a filler, a chemical agent, or both. Fly ash suppresses the intensity of the clay minerals in sh
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29

LOTHENBACH, Barbara, Blandine ALBERT, Vincent MORIN, and Ellis GARTNER. "Hydration of Belite-Ye'elimite-Ferrite cements: thermodynamic modeling." October 13, 2015. https://doi.org/10.5281/zenodo.2575538.

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This paper describes a study of the hydration of belite-ye’elimite ferrite (BYF) cements, made from clinkers comprising principally belite (C2S), with ye’elimite (C4A3$) and ferrite (C4AF) as the two main secondary phases, and inter-ground with calcium sulfates. The clinkers used in this study also contained some boron in order to stabilize alpha’-C2S at room temperature. The main hydration products of these cements at early ages are the same as the products of ye’elimite hydration in presence of calcium sulfate: ettringite, calcium monosulfoaluminat
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