ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
Sulphoaluminate-alite cement (SAAC) was successfully prepared from high alumina flyash. XRD analysis indicated that the optimal mineralogical phase of cement clinker was obtainedunder condition of MG=1.05, MS =0.95 at 1300oC, and C4A3 S reached the strongest intensity andis 58.73% in the phase of calcined clinckers. SEM observation showed that C4A3 S are welldeveloped into regular diamond/hexagon-shaped crystal with the size of 1~3.5 μm in the clinker.Hydrated clinker exhibited its new formed dominant phases in AFt, C-S-H and Afm. Pillar shapedAFt and sheet shaped AFm coexisted among the colloidal C-S-H substrate. It is demonstrated thatthe prepared cement shows a compressive strength of 27 MPa (1d), 36 MPa (3d), 49 MPa (28d),and flexural strength of 5.9 MPa (1d), 5.9 MPa (3d), 6.1 MPa (28d), indicated that the hydrationproduct owned a good mechanical strength at early ages and increased steadily in the later stages
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.421.pdf
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