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Journal articles on the topic 'Alite'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 June 2025

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1

Bergold, S. T., F. Goetz-Neunhoeffer, and J. Neubauer. "Mechanically activated alite: New insights into alite hydration." Cement and Concrete Research 76 (October 2015): 202–11. http://dx.doi.org/10.1016/j.cemconres.2015.06.005.

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2

Courtial, M., M. N. de Noirfontaine, F. Dunstetter, G. Gasecki, and M. Signes-Frehel. "Polymorphism of tricalcium silicate in Portland cement: A fast visual identification of structure and superstructure." Powder Diffraction 18, no. 1 (2003): 7–15. http://dx.doi.org/10.1154/1.1523079.

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So-called alite is a solid solution of tricalcium silicate Ca3SiO5 with a few percent of impurities. It constitutes the major phase of anhydrous Portland cement. In industrial compounds, alite crystallizes into two monoclinic forms designated M1 and M3. The possibility of correlation between the crystallographic structure of the clinker and its reactivity is still an open question. The answer of such a question involves a proper quantitative analysis of the various phases—including the exact alite polymorph—of the industrial product. The rather similar structure of the two alites makes it difficult to distinguish them from their XRD patterns. This paper shows that five angular windows in the X-ray diffraction patterns can be used with synthetic alites as well as industrial compounds, to identify the nature of the actual polymorph (M1 or M3) present and the structural model to be used (with or without superstructure) in subsequent Rietveld analysis of the data.
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3

Zheng, Jiaoling, Shuaifei Wei, Qianqian Wang, Xiaodong Li, and Suhua Ma. "Kinetics of alite formation and ye’elimite decomposition in alite-ye’elimite cement clinker." Chemical Papers 75, no. 11 (2021): 5983–93. http://dx.doi.org/10.1007/s11696-021-01781-x.

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4

Wang, Shou De, Xiang Yang Guo, Ling Chao Lu, and Xin Cheng. "Effect of Doped with BaO on the Formation Dynamics of Alite in Alite-Rich Cement Clinker." Advanced Materials Research 306-307 (August 2011): 998–1002. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.998.

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Effect of doped BaO on the formation dynamics of alite of alite-rich cement clinker was investigated. The experimental results indicated that its formation kinetic satisfied with three- dimensional spherical model and accorded with Glinstling diffusion equation. Doped BaO could decrease dramatically the apparent activation energy of alite-rich cement clinker. This was contributed to the combination of C2S and CaO in liquid phase, and acceleration of formation of alite-rich cement clinker.
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5

Zhou, Zong Hui, Ling Chao Lu, Xing Kai Gao, and Xin Cheng. "Mechanical Properties of Alite-Calcium Barium Sulphoaluminate Cement Concrete." Key Engineering Materials 400-402 (October 2008): 121–24. http://dx.doi.org/10.4028/www.scientific.net/kem.400-402.121.

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In this paper, preparation and mechanical properties of Alite-calcium barium sulphoaluminate (Alite-C2.75B1.25A3 ) cement concrete were studied. The results showed the compressive strength of Alite-C2.75B1.25A3 cement concrete was much higher than that of Portland cement concrete, especially the early-age compressive strength. The 24-hour compressive strength of Alite-C2.75B1.25A3 cement concrete could reach 22.81Mpa for w/c=0.45, 17.29Mpa for w/c=0.50 and 17.04Mpa for w/c=0.55 respectively. They were about 50 to 65 percent higher than those of Portland cement concrete. The 7-day compressive strength could reach about 80 to 90 percent of 28-day strength for Alite-C2.75B1.25A3 cement concrete. The 28-day strength could reach 55.85Mpa for w/c=0.45, 48.01Mpa for w/c=0.50 and 44.21Mpa for w/c=0.55 respectively. The results of SEM showed the interfaces between the hardened cement paste and aggregates in Alite-C2.75B1.25A3 cement concrete were more compact than those in Portland cement concrete. Distribution of particulate bulk was more uniformity and a majority of clinker particles was wrapped by hydrated gel in Alite-C2.75B1.25A3 concrete. And, the structure of Alite-C2.75B1.25A3 cement concrete was much more compact than that of Portland cement concrete.
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6

Begarin, F., S. Garrault, A. Nonat, and L. Nicoleau. "Hydration of alite containing aluminium." Advances in Applied Ceramics 110, no. 3 (2011): 127–30. http://dx.doi.org/10.1179/1743676110y.0000000007.

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7

Li, Gui Qiang, Shou De Wang, Chao Nan Yin, and Ling Chao Lu. "Study on Sintering Technology and Performance of Alite-Rich Cement Modified by C1.5Sr2.5A3S Mineral." Advanced Materials Research 306-307 (August 2011): 970–74. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.970.

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The effects of the sintering temperature, sintering time and contents of calcium strontium suphoaluminate (C1.5Sr2.5A3) on the sintering technology of the alite-rich cement clinker modified by C1.5Sr2.5A3were researched by the orthogonal test method. X-ray diffraction, scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) and lithofacies analysis were used to investigate the compositions and structure of cement. The experimental results show that the optimal sintering temperature and sintering time of alite-rich cement clinker modified by C1.5Sr2.5A3are 1350 °C and 60 min, and the appropriate content of C1.5Sr2.5A3in the clinker is 2%. The introduction of C1.5Sr2.5A3in clinker can promote the formation of alite mineral at low temperature and decrease the sintering temperature of clinker by 100°C approximately. This new-type cement shows excellent mechanics properties. The compressive strength at 3d is up to 64.3MPa, which is increased by 26.7% comparing to that of alite-rich cement and the compressive strength at 28d is almost the same as that of alite-rich cement. For alite-rich cement clinker modified by C1.5Sr2.5A3calcinated at low temperature, alite still can be mass-formed, but the size decreases.
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8

Wang, Shou De, Ling Chao Lu, and Xin Cheng. "Effect of Slag on Expansion of Alite-Calcium Barium Sulphoaluminate Cement." Advanced Materials Research 306-307 (August 2011): 1003–6. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1003.

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The influences of slag on the expansion of alite-calcium barium sulphoaluminate cement were studied. The experimental results indicated that the formation of ettringite and Ba-bearing ettringite are the main expansion sources of alite-calcium barium sulphoaluminate cement clinker with only gypsum. In addition to the ettringite and Ba-bearing ettringite, the Mg(OH)2 crystal formation was another probably the expansion source. The expansion rate of alite-calcium barium sulphoaluminate cement increased with slag content rising. Even if the content of slag in cement arrived at 20%, the soundness of alite-calcium sulphoaluminate cement its expansion was still in the safety range.
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9

Staněk, Theodor. "Potential Application of Belite Clinker." Advanced Materials Research 1000 (August 2014): 7–11. http://dx.doi.org/10.4028/www.scientific.net/amr.1000.7.

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Blended cements were prepared from belite clinker burned in a model kiln and ordinary industrial alite clinker. The mechanical and physical properties of these blended cements were determined. The difference in the development of hydration heat of belite and alite cements by using calorimetric method was determined also. The results show that strengths of prepared belite cement after 28 days of hydration are equal to those of industrial alite cement. Short time strengths are suitable for blended cements up to 30 % content of belite clinker. These results demonstrate the possibility of separate industrial belite clinker production next to common alite clinker manufactory and production of economically and ecologically advantageous blended Portland cements with suitable technological properties.
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10

Noor-ul-Amin, Sultan Alam, Saeed Gul, and Khan Muhammad. "Hydration mechanism of tricalcium silicate (alite)." Advances in Cement Research 25, no. 2 (2013): 60–68. http://dx.doi.org/10.1680/adcr.11.00061.

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11

Suraneni, Prannoy, and Robert J. Flatt. "Micro-reactors to Study Alite Hydration." Journal of the American Ceramic Society 98, no. 5 (2015): 1634–41. http://dx.doi.org/10.1111/jace.13472.

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12

Signes-Frehel, M., M. N. de Noirfontaine, and F. Dunstetter. "Modelling of Alite: an industrial challenge." Acta Crystallographica Section A Foundations of Crystallography 56, s1 (2000): s396. http://dx.doi.org/10.1107/s0108767300028245.

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13

Jennings, H. M., and L. J. Parrott. "Microstructural analysis of hardened alite paste." Journal of Materials Science 21, no. 11 (1986): 4048–52. http://dx.doi.org/10.1007/bf02431650.

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14

Jennings, H. M., and L. J. Parrott. "Microstructural analysis of hydrated alite paste." Journal of Materials Science 21, no. 11 (1986): 4053–59. http://dx.doi.org/10.1007/bf02431651.

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15

Taylor, J. C., and L. P. Aldridge. "Full-profile Rietveld quantitative XRD analysis of Portland cement: Standard XRD profiles for the major phase tricalcium silicate (C3S: 3CaO.SiO2)." Powder Diffraction 8, no. 3 (1993): 138–44. http://dx.doi.org/10.1017/s0885715600018054.

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The calculated XRD profiles of alite (impure Ca3SiO5, the major phase in Portland cement) derived from seven postulated crystal structures for alite were compared with a measured alite profile, extracted from the XRD pattern of a standard Portland cement. Only two of these profiles were found suitable for multiphase Rietveld phase quantification, namely those given by the monoclinic superlattice and triclinic models. These, however, gave very slow computing times because the large low-symmetry structures generated many X-ray reflections over the pattern. Also tested was an “observed” standard profile for alite, derived from experimental alite profiles, and generated using the (hkl) file feature of the SIROQUANT P.C. quantitative analysis system. This file was based on rhombohedral pseudosymmetry and contained very few (hkl) reflections, compared to the low-symmetry models (64 reflections instead of 951 for the monoclinic and 1691 for the triclinic models, respectively). The latter standard profile gave the best fit to the known phase concentrations and gave computing times which were shorter by factors of 2.5 and 4.9 than those for the monoclinic and triclinic standard profiles, respectively.
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16

Wang, Shou De, Xiang Yang Guo, and Ling Chao Lu. "̅̅Research on Calcination Condition of Alite-Rich Portland Cement Clinker with C2.75B1.25A3 S." Advanced Materials Research 450-451 (January 2012): 392–96. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.392.

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Calcination condition and mechanical performance of alite-rich Portland cement with barium calcium sulphoaluminate mineral(C2.75B1.25A3S ) were investigated by the orthogonal test method in which the influencing factors included sintering temperature, sintering time and cooling method. The composition, structure and performance of the clinker were analyzed by the means of X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy and metallographic microscope. The results show that C2.75B1.25A3S mineral and alite can coexist in one clinker system. The introduction of C2.75B1.25A3S mineral to clinker system is benefit to promote the formation of alite at lower temperature. The optimal sintering temperature, sintering time and cooling method are 1380°C, 60 min and two-stage cooling, respectively. Under these processing conditions, the compressive strength of alite-rich Portland cement with barium calcium sulphoaluminate reaches 43.4, 80.6 and 123.8 MPa at 3d, 7d and 28d curing ages, respectively, which shows excellent performance of mechanical strength.
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17

Mohaček-Grošev, Vlasta, Marija Đuroković, and Aleksandar Maksimović. "Combining Raman Spectroscopy, DFT Calculations, and Atomic Force Microscopy in the Study of Clinker Materials." Materials 14, no. 13 (2021): 3648. http://dx.doi.org/10.3390/ma14133648.

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Raman spectroscopy and Raman mapping analysis, combined with density functional theory calculations were applied to the problem of differentiating similar clinker materials such as alite and belite. The Portland cement clinker 217 (further: clinker) was analysed using colocalised Raman mapping and atomic force microscopy mapping, which provided both spatial and chemical information simultaneously. The main constituents found in the clinker were alite, belite, portlandite, amorphous calcium carbonate, and gypsum. Since phonon bands of alite and belite greatly overlap, and their distinction is important for the hydration process during cement setting, we provided the calculated phonon density of states for alite Ca3SiO5 (<M>Pc structure) and belite Ca2SiO4 (β P21/n structure) here for the first time. Both calculated phonon densities have similar distribution of phonon modes, with a gap between 560 and 810 cm−1. A comparison of the calculated phonon frequencies for Ca3SiO5 and Ca2SiO4 shows that the lowest calculated phonon frequency of β-Ca2SiO4 lies at 102 cm−1, while for <M>Pc alite the lowest phonon frequency is predicted at 27 cm−1. Low frequency Raman spectroscopy could therefore be used for a clearer distinction of these two species in a clinker material.
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18

Jansen, Daniel, Sebastian T. Bergold, Friedlinde Goetz-Neunhoeffer, and Jürgen Neubauer. "The hydration of alite: a time-resolved quantitative X-ray diffraction approach using theG-factor method compared with heat release." Journal of Applied Crystallography 44, no. 5 (2011): 895–901. http://dx.doi.org/10.1107/s0021889811025933.

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The classical external-standard method derived from the work of O'Connor & Raven [Powder Diffr.(1988),3, 2–6] was used to examine the hydration of the major phase, alite, of ordinary Portland cements at different temperatures and different water/alite ratios. In order to estimate the accuracy of the method, heat-flow curves were calculated from the alite dissolution curves obtained from X-ray diffractionin situexperiments. The heat-flow curves calculated in this way were compared with heat-flow curves recorded using a calorimeter. It is shown that the calculated curves agree well with the curves obtained from heat-flow experiments.
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19

Li, Qiu Ying, Ling Chao Lu, and Shou De Wang. "Effect of Gypsum on Hydration Degree and Structure of Hardened Paste of Alite-Strontium Calcium Sulphoaluminate Cement." Advanced Materials Research 306-307 (August 2011): 1024–28. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1024.

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Synthesis conditions and performance of alite-strontium calcium sulphoaluminate cement have been studied by introducing strontium calcium sulphoaluminate into Portland cement clinker. The effects of gypsum on compressive strength, hydration degree and structure of hardened alite-strontium calcium sulphoaluminate cement paste were studied in this paper. Composition and structure of the hardened cement paste were analyzed by XRD and SEM. Results show that appropriate content of gypsum could contribute to the hydration of alite-strontium calcium sulphoaluminate cement. When gypsum content is 9%, the compressive strengths for 1d, 3d and 28d curing age are 30.7MPa, 59.5MPa and 105.5MPa, and the corresponding hydration degree are 40.4%, 57.5% and 85.8%, respectively. The hydration products of alite-strontium calcium sulphoaluminate cement are mainly ettringite (AFt), Ca(OH)2, C-S-H gel. Large amount of AFt formed at early curing age provides a sound basis for early compressive strength, and a lot of C-S-H gel generated at later curing age increases the density of the hardened paste.
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20

Hanein, Theodore, Tristana Y. Duvallet, Robert B. Jewell, et al. "Alite calcium sulfoaluminate cement: chemistry and thermodynamics." Advances in Cement Research 31, no. 3 (2019): 94–105. http://dx.doi.org/10.1680/jadcr.18.00118.

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21

Kumar, Aditya, Shashank Bishnoi, and Karen L. Scrivener. "Modelling early age hydration kinetics of alite." Cement and Concrete Research 42, no. 7 (2012): 903–18. http://dx.doi.org/10.1016/j.cemconres.2012.03.003.

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22

Ma, Suhua, Ruben Snellings, Xuerun Li, Xiaodong Shen, and Karen L. Scrivener. "Alite-ye'elimite cement: Synthesis and mineralogical analysis." Cement and Concrete Research 45 (March 2013): 15–20. http://dx.doi.org/10.1016/j.cemconres.2012.10.020.

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23

Lu, Lingchao, Zeye Lu, Shiquan Liu, Shoude Wang, and Xin Cheng. "Durability of alite-calcium barium sulphoaluminate cement." Journal of Wuhan University of Technology-Mater. Sci. Ed. 24, no. 6 (2009): 982–85. http://dx.doi.org/10.1007/s11595-009-6982-4.

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24

Yin, Chao Nan, Ling Chao Lu, and Shou De Wang. "Effect of P2O5 on the Properties of Alite-Calcium Strontium Sulphoaluminate Cement." Advanced Materials Research 306-307 (August 2011): 961–65. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.961.

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The influence of P2O5on the properties of alite-calcium strontium sulphoaluminate cement was researched by means of X-ray diffraction, scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) and petrographic analysis. The results show that the optimal content of P2O5is 0.3% and the compressive strength of the cement at 1, 3, 28d are 27.0, 59.1, 110.9MPa when the calcining temperature is 1350°C. P2O5mainly exists in the belite and a suitable amount of P2O5can promote the formation of C1.5Sr2.5A3and alite. When the content of P2O5is higher than 0.3%, the formation of C1.5Sr2.5A3and alite can be hindered. P2O5can enhance the hydration heat evolution rate in the acceleration period and the hydrate heat of cement containing P2O5increases slightly.
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25

Ravaszová, Simona, and Karel Dvořák. "Development of Crystallinity of Triclinic Polymorph of Tricalcium Silicate." Materials 13, no. 17 (2020): 3734. http://dx.doi.org/10.3390/ma13173734.

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Tricalcium silicate phase is one of the main components of modern Portland cements. One of the major industrial challenges in the field of cement production is mapping the influence of individual clinker minerals and their polymorphs on the properties of industrially produced clinkers. The primary goal of this work is to improve the fundamental knowledge of understanding the process of alite formation and development from a crystallographic point of view. This study focuses on the observation of the crystallization process of triclinic alite during the firing process, which to date has not been thoroughly described. The effects of a wide range of temperatures and sintering periods on crystallinity were assessed on samples fired in platinum crucibles in a laboratory furnace. X-ray analysis—together with calculation of crystallinity using Scherrer’s equation—was used for observing the crystallite size changes of T1 alite polymorph. According to the acquired results, among the most technologically and economically advantageous regimes of production of a high-quality triclinic alite is the temperature of 1450 °C and sintering time of two hours. The most significant changes in the crystallite size occurred within the first hour of sintering for the whole investigated temperature range.
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26

Chitvoranund, Natechanok, Frank Winnefeld, Craig W. Hargis, Sakprayut Sinthupinyo, and Barbara Lothenbach. "Synthesis and hydration of alite-calcium sulfoaluminate cement." Advances in Cement Research 29, no. 3 (2017): 101–11. http://dx.doi.org/10.1680/jadcr.16.00071.

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27

UCHIDA, Shunichiro, Shunsuke HANEHARA, Daisuke SAWAKI, Tokuhiko SHIRASAKA, and Yasuo ARAI. "Characteristics of Hydrated Alite in Hardened Cement Body." Journal of the Ceramic Society of Japan 100, no. 1163 (1992): 894–900. http://dx.doi.org/10.2109/jcersj.100.894.

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28

Min, Huihua, Yunfei Liu, Hu Chen, Hongjiang Lu, and Yinong Lü. "Study on modulated structure of M3 polymorphic alite." Procedia Engineering 27 (2012): 315–22. http://dx.doi.org/10.1016/j.proeng.2011.12.458.

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29

NAKAMURA, Akinori, Etsuo SAKAI, Tetuya KUMATA, Yoko OHBA, Toyohiko YANO, and Masaki DAIMON. "Influence of KCI on the Hydration of Alite." NIPPON KAGAKU KAISHI, no. 6 (1998): 433–37. http://dx.doi.org/10.1246/nikkashi.1998.433.

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30

SHINSUGI, Masashi, Norrarat SIRIBUDHAIWAN, Daiki ATARASHI, and Etsuo SAKAI. "USE OF HIGH-ALITE CLINKER IN BLENDED CEMENT." Cement Science and Concrete Technology 68, no. 1 (2014): 212–17. http://dx.doi.org/10.14250/cement.68.212.

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31

SIRIBUDHAIWAN, Norrarat, Daiki ATARASHI, Nobukazu NITO, Masahiro MIYAUCHI, Kiyoshi KOIBUCHI, and Etsuo SAKAI. "Hydration of blended cement with high alite content." Journal of the Ceramic Society of Japan 122, no. 1432 (2014): 1004–9. http://dx.doi.org/10.2109/jcersj2.122.1004.

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32

Maki, I., S. Ito, T. Tanioka, Y. Ohno, and K. Fukuda. "Clinker grindability and textures of alite and belite." Cement and Concrete Research 23, no. 5 (1993): 1078–84. http://dx.doi.org/10.1016/0008-8846(93)90167-8.

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33

Ismail, M. R., M. M. El-Fass, H. A. Abd-El-Rahman, and A. A. El-Milligy. "Physico-chemical studies on polymethyl methacrylate alite composite." Journal of Radioanalytical and Nuclear Chemistry 240, no. 1 (1999): 141–46. http://dx.doi.org/10.1007/bf02349146.

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34

Flatt, Robert J., George W. Scherer, and Jeffrey W. Bullard. "Why alite stops hydrating below 80% relative humidity." Cement and Concrete Research 41, no. 9 (2011): 987–92. http://dx.doi.org/10.1016/j.cemconres.2011.06.001.

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35

Ma, Suhua, Ruben Snellings, Xuerun Li, Xiaodong Shen, and Karen L. Scrivener. "Alite-ye’elimite clinker: Hydration kinetics, products and microstructure." Construction and Building Materials 266 (January 2021): 121062. http://dx.doi.org/10.1016/j.conbuildmat.2020.121062.

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36

Kwon, Woo Teck, Young Phil Kim, Y. Kim, Soo Ryong Kim, and Seong Youl Bae. "Effect of Pair-Mineralizer on the Reaction of Alite and Calcium Langbeinite Formation." Materials Science Forum 510-511 (March 2006): 622–25. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.622.

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This paper investigates the effect of the pair-minerializer (CaSO4,-CaF2) on the reaction of alite, belite and calcium langbeinite formation with different alkali and sulfate contents. A set of clinker samples was prepared by adding laboratory grade reagents of (NH4)2SO4, CaF2 and K2CO3 to the cement raw mixes. The mineralogical composition of clinker was analyzed by X-ray powder diffraction, and the quantity of minerals was evaluated by using TOPAS software. As the experimental results, the total amount of calcium silicate minerals was rapidly increased with the addition of F and SO3 components simultaneously as pair-mineralizer with K2O more than the value which mineralizer was added separately. Also, in the case of adding K2O only to the raw mixes, the amount of alite is decreased after clinkering. However, if alkali (K2O) and pair-minerializer (CaSO4,-CaF2) were added simultaneously, the quantity of alite and calcium langbeinite mineral increased because of the formation of stable clinker minerals by the reaction of alkali (K2O) and sulfate.
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37

Kang, Rui, Su Hua Ma, and Xiao Dong Shen. "Secondary Sintering Cement Clinker in SO2 Atmosphere: Composition and Structure Effects." Materials Science Forum 1036 (June 29, 2021): 208–13. http://dx.doi.org/10.4028/www.scientific.net/msf.1036.208.

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A gas-solid reaction method was adopted in this work to explore the influence of SO2 gas on the composition and structure of secondary sintering cement clinker. In this process, the Portland cement clinker was secondarily sintered at different temperatures and a mixed gas mixed with SO2 was introduced simultaneously in a tube furnace. X-ray powder diffraction (XRD) combined with rietveld refinement was used to determine the phase composition of the cement clinker and the corresponding phase content. The experimental results showed that the increase in temperature conduced to increasing the content of SO3 solid solution, C2S and CaO, but decreasing the C3S content. Moreover, as the ratio of SO3/MgO (by mass) increases, the content of M1-type alite also increased. And the result of hydration heat release was positively correlated with the content of alite in the clinker. If the content of alite was low, the heat flow was low, as well as the cumulative heat, and vice versa.
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38

Kacimi, Larbi, Angélique Simon-Masseron, Abdelhamid Ghomari, and Zoubir Derriche. "Reduction of clinkerisation temperature by addition of salts containing fluorine." Canadian Journal of Civil Engineering 33, no. 8 (2006): 1090–97. http://dx.doi.org/10.1139/l06-047.

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The influence of some salts containing fluorine (CaF2, NaF, and KF) on the reduction of burning temperature of Portland clinker from three Algerian cement factories (units of Zahana, Beni-Saf, Chlef) has been studied in this paper. X-Ray fluorescence, optical microscope technique, and powder X-ray diffraction were then used to characterize each clinker and its raw mixture in terms of chemical composition and clinker mineralogical composition. The effects of these mineralizers on structural and morphological properties of clinker minerals and on the presence of alite were investigated by scanning electron microscopy combined with microprobe analysis. Physical and mechanical properties (density, specific area, setting time, hydration heat, expansion, and mechanical strength) of some samples were studied. The results show that the presence of the mineralizers under study induced a decrease of the burning temperature. For example, NaF improved the crystallization of clinker minerals with high alite rate. These characteristics explain the improvement of physical and strength properties of the new clinkers.Key words: clinker, alite, structure, hydraulic activity, clinkerisation temperature, mineralizer.
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39

Shim, Sang-Hyo, Tae-Hee Lee, Seong-Joon Yang, Norhazilan Bin Md Noor, and Jang-Ho-Jay Kim. "Calculation of Cement Composition Using a New Model Compared to the Bogue Model." Materials 14, no. 16 (2021): 4663. http://dx.doi.org/10.3390/ma14164663.

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The major cement composition ratios of alite, belite, aluminate, and ferrite have been calculated with the Bogue models until now. However, a recent comprehensive analysis based on various experimental data has revealed that the chemical composition of alite, belite, aluminate, and ferrite implemented by the Bogue models are slightly different than the experimental data, where small amounts of Al2O3 and Fe2O3 existing in alite and belite can change the prediction of cement composition. Since the amounts of cement compound are very important factors in determining the properties of concrete, improvement in the calculation would give more precise prediction for application usages such as climate change adaptable cement and high durable concrete manufacturing. For this purpose, 20 new models are proposed by modifying chemical compositions of the cement compounds and verified with the 50 experimental data sets. From the verification, the most accurate models are identified. The calculation using new models exhibit an accuracy improvement of approximately 5% compared to the Bogue models. Their applicable range is also presented. The study results are discussed in detail in the paper.
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40

Pérez-Bravo, Raquel, Gema Álvarez-Pinazo, Jose M. Compana, et al. "Alite sulfoaluminate clinker: Rietveld mineralogical and SEM-EDX analysis." Advances in Cement Research 26, no. 1 (2014): 10–20. http://dx.doi.org/10.1680/adcr.12.00044.

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41

PARROTT, L. J., R. G. PATEL, D. C. KILLOH, and H. M. JENNINGS. "Effect of Age on Diffusion in Hydrated Alite Cement." Journal of the American Ceramic Society 67, no. 4 (2006): 233–37. http://dx.doi.org/10.1111/j.1151-2916.1984.tb18837.x.

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42

MIYAZAWA, Shingo, Takashi YOKOMURO, Etsuo SAKAI, and Nobukazu NITO. "PROPERTIES OF FLY ASH CONCRETE USING HIGH ALITE CEMENT." Cement Science and Concrete Technology 69, no. 1 (2015): 303–10. http://dx.doi.org/10.14250/cement.69.303.

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43

Londono-Zuluaga, D., J. I. Tobón, M. A. G. Aranda, I. Santacruz, and A. G. De la Torre. "Clinkering and hydration of belite-alite-ye´elimite cement." Cement and Concrete Composites 80 (July 2017): 333–41. http://dx.doi.org/10.1016/j.cemconcomp.2017.04.002.

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44

Khedr, Mohammed S. A., Mona F. Ali, Abdullah M. A. Kamel, and Manal A. A. El-Ghanam. "Archaeometric study of the historic terrazzo pavement of Prince Mohamed Ali Museum, Cairo, Egypt." Pollack Periodica 15, no. 1 (2020): 221–32. http://dx.doi.org/10.1556/606.2020.15.1.21.

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Abstract This research will shed light on studying a terrazzo pavement in Prince Mohamed Ali Museum (the case study). The authors used visual inspection, stereo microscope, USB microscope, XRPD analysis, and SEM.EDX to identify its components, deterioration aspects and execution techniques. The XRPD and SEM.EDX results revealed that Portland cement was used in the three layers of terrazzo because of the detection of Hatrurite, Alite, Anorthite, Albite, Aragonite, etc. Many pigments were used in the topping terrazzo layer as; Goethite, Greenalite, Hematite, Azurite and Magnetite. The divider strips were made of brass alloy and the topping layer chips were prepared from basalt, marble and sea shells.
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45

Li, Qiu Ying, Ling Chao Lu, and Shou De Wang. "Influences of Microelement on Microstructure and Mechanical Performance of Alite-Strontium Calcium Sulphoaluminate Cement." Advanced Materials Research 168-170 (December 2010): 466–71. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.466.

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Alite-strontium calcium sulphoaluminate cement, a new type of cementitious material, is synthesized by combining strontium calcium sulphoaluminate with minerals of Portland cement clinker. The influences of excessive SO3 and SrO on the microstructure and performances of this cement are studied by XRD, SEM-EDS and lithofacies. The results show that the optimal excessive mass fraction of SO3 and SrO are 50% and 80%. The compressive strength of the cement prepared under the testing conditions reaches to 32.8MPa, 66.8MPa and 126.4MPa at 1d, 3d and 28d curing ages, respectively. The additions of SO3 and SrO are benefit to improve the content of strontium calcium sulphoaluminate, and promote the formation of alite at low sintering temperature.
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MARUYAMA, Ippei, Tetsuro MATSUSHITA, Takafumi NOGUCHI, Yoshifumi HOSOKAWA, and Kazuo YAMADA. "RATE OF HYDRATION OF ALITE AND BELITE IN PORTLAND CEMENT." Journal of Structural and Construction Engineering (Transactions of AIJ) 75, no. 650 (2010): 681–88. http://dx.doi.org/10.3130/aijs.75.681.

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47

MORIOKA, Minoru, Hirotoshi HAGIWARA, Jin-Kyu KANG, Yoko OHBA, Etsuo SAKAI, and Masaki DAIMON. "Hydration Reaction of Calcium Sulfoaluminate-Type Expansive Addivive-Alite System." Journal of the Ceramic Society of Japan 108, no. 1256 (2000): 392–96. http://dx.doi.org/10.2109/jcersj.108.1256_392.

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48

AWAMURA, Tomotaka, and Toyoharu NAWA. "EFFECTS OF CALCIUM CHLORIDE ON THE HYDRATION KINETICS OF ALITE." Cement Science and Concrete Technology 67, no. 1 (2013): 71–78. http://dx.doi.org/10.14250/cement.67.71.

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49

Biernacki, Joseph J., and Tiantian Xie. "An Advanced Single Particle Model for C3S and Alite Hydration." Journal of the American Ceramic Society 94, no. 7 (2011): 2037–47. http://dx.doi.org/10.1111/j.1551-2916.2010.04352.x.

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Nicoleau, Luc, and Maria Alice Bertolim. "Analytical Model for the Alite (C 3 S) Dissolution Topography." Journal of the American Ceramic Society 99, no. 3 (2015): 773–86. http://dx.doi.org/10.1111/jace.13647.

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