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- Title
Effect of Rice Husk Ash on the Thaumasite Form of Sulfate Attack of Cement-Based Materials.
- Authors
Ma, Baoguo; Wang, Yingbin; Fu, Haobing
- Abstract
The influence of rice husk ash (RHA) on the thaumasite formation of cement pastes containing limestone powder was investigated. The specimens which were cured in 2 % MgSO solution were prepared with different ratios of coarse rice husk ash (CRHA) and fine rice husk ash (FRHA) to cement. The visual change of mortars was inspected monthly. Compressive strength, length and mass developments were examined as functions of time. The products of sulfate attack were examined by X-ray diffraction, Fourier transform infrared spectroscopy and Laser-Raman spectroscopy. The results showed that the degree of deterioration was retarded when cement was partially replaced by RHA. The use of FRHA showed better performance than those of the coarser ones. No obvious degeneration was observed in the mortar contains 20 % FRHA after 12 months of immersing in the MgSO solution.
- Subjects
RICE hulls; THAUMASITE; CEMENT; LIMESTONE; COMPRESSIVE strength; X-ray diffraction; FOURIER transform infrared spectroscopy
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2014, Vol 39, Issue 12, p8517
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-014-1414-y