Optimum Partial Replacement of Cement by Nanosilica, Microsilica and Rice Husk Ash for Mass Production of Concrete

Abstract:

The objective of this technical paper was to propose the use of optimum partial replacement of cement by pozzolan of high-silica content i.e. nanosilica, silica fume and rice husk ash. Firstly cement hydration, pozzolanic reactions of pozzolan and stoichiometry were reviewed. Then the optimum fractional replacement of cement by pozzolan based on the complete consumption of calcium hydroxide and the strength activity index (SAI) were formulated and proposed. After that the results of a series of tests of cement mortars were shown to verify the proposed concepts. The applicability for the mass concrete production was demonstrated by prediction of mean values of nonnormal distributions from the corresponding specifications.

• Periodical: Key Engineering Materials (Volume 751)
• Pages: 544-549
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.751.544
• Online since: August 2017
• Authors: Winai Ouypornprasert*, Narong Traitruengtatsana, Kong Kamollertvara
• Keywords: Goodness-of-Fit Tests, Mass Production of Concrete, Partial Replacement of Cement by Silica, Strength Activity Index

References

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DOI: 10.4028/www.scientific.net/kem.751.544

[7] K. Kamollertvara, W. Ouypornprasert, Determination of mean values of common distributions in civil engineering from the specifications for mass production, in the proceedings of The 7th PSU-UNS International Conference on Engineering and Technology (ICET-2015) & The 11th PSU-Engineering Conference (PEC-11) June, 19-20, 2015 at Duangjitt Resort & Spa, Patong Beach, Phuket, Thailand, pp.40-43.