Using Numerical Model to Evaluate Pozzolanic Activity of Natural Pozzolan in The Soil Stabilization Process
Huu Nam Nguyen1, Van Quan Tran2, Anh Quan Ngo3, Quang Hung Nguyen4

1Huu Nam Nguyen, Institute for Hydropower and Renewable Energy, Hanoi, Vietnam.
2Van Quan Tran, University of Transport Technology, Hanoi, Vietnam.
3Anh Quan Ngo, Hydraulic Construction Institute, Hanoi, Vietnam
4Quang Hung Nguyen, Hydraulic Construction Institute, Hanoi, Vietnam

Manuscript received on 18 April 2019 | Revised Manuscript received on 25 April 2019 | Manuscript published on 30 April 2019 | PP: 142-145 | Volume-8 Issue-4, April 2019 | Retrieval Number: D6375048419/19©BEIESP
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Abstract: Natural pozzolan is one of raw materials that is regularly used in the soil stabilization process. The paper uses thermodynamic model to evaluate pozzolanic activity of natural pozzolan. Based on mineralogical composition of two types natural pozzolan: one of Daknong-Vietnam and another one of Bigadiç-Turkey, the thermodynamic model can simulate chemical composition of pore solution, mineral precipitation quantity. From this simulation, numerical quantity calcium silicate hydrated C-S-H and calcium aluminate silicate hydrated C-A-S-H can be calculated. Different cases of mix design: soil/pozzolan/lime are set up. In all of the cases, a comparison of quantity C-S-H and C-A-S-H between of two natural pozzolan is carried out to evaluate the pozzolanic activity of the each natural pozzolan. Thermodynamic model seems to be considered as a tool to evaluate pozzolanic activity of natural pozzolan.
Keywords: Numerical Model, Activity of Natural Pozzolan, Soil Stabilization Process, Daknong Vietnam.

Scope of the Article: Soil-Structure Interaction