synthesis and characterization of high belite sulfoaluminate cement through rich alumina fly ash and desulfurization gypsum

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ID: 158512
2013
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Abstract
The objective of this study was the preparation and characterization of high belite sulfoaluminate cement (HBSC) from industrial residues. HBSC promises eco-friendly building materials with great mechanical performance at earlier ages than Ordinary Portland Cement (OPC). Preliminary results show the formation of main phase dicalcium silicate (C2S) and ye’elimite (C4A3$) at 1250°C, as determined by X-ray diffraction (XRD), are promising. The formation of minerals in the clinker was analyzed by differential scanning calorimetry-thermogravimetry (DSC–TG). Likewise, Scanning electron microscope (SEM) and XRD were used to carry out the analysis of the micro-structural and hydration products. The main HBSC hydration products, Ettringite and amorphous Al(OH)3, were formed in the early stages; however, during the later stages, monosulfate and Strätlingite were formed. Isothermal conduction calorimetry measurements indicate that hydration properties of the cements are comparable to OPC; the total hydration heat after 3 days was 438 J/g. The optimum compressive strength values of the mortars after 1-, 3-, 7-, and 28-days were 24.9 MPa, 33.2 MPa, 35.6 MPa and 52.8 MPa which can meet the requirement of special structures.
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ma,2013ceramics-siliktysynthesis Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Bing MA, Xuerun LI, Yuyi Mao, Xiaodong Shen
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Journal european journal of organic chemistry
Year 2013
DOI
DOI not found
URL
http://www.ceramics-silikaty.cz/2013/pdf/2013_01_007.pdf
Keywords
fly ash glass Ceramics hydrationclay industries

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