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Computers and Concrete
  Volume 13, Number 3, March 2014 , pages 361-375

Nonlinear calculation of moisture transport in underground concrete
M.F. Ba, C.X. Qian and G.B.Gao

    The moisture transport in underground concrete was experimentally investigated and the nonlinear model of moisture transport considering the effects of water diffusion, hydration of cementicious materials and water permeability was proposed. The consumed moisture content by self-desiccation could be firstly calculated according to evolved hydration degree of cement and mineral admixtures. Furthermore, the finite differential method was adopted to solve the moisture transport model by linearizing the nonlinear moisture diffusion coefficient. The comparison between experimental and calculated results showed a good agreement, which indicated that the proposed moisture model could be used to predict moisture content evolution in underground concrete members with drying–wetting boundaries.
Key Words
    nonlinear moisture model; underground concrete; hydration degree evolution
M.F. Ba: Faculty of Architectural Civil Engineering and Environment, Ningbo University, Ningbo, 315211, China
C.X. Qian: School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China
G.B.Gao: Shandong Provincial Academy of Building Research, Jinan 250031, China

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