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J. Cent. South Univ. Technol. (2011) 18: 530-535 DOI: 10.1007/s11771-011-0727-1 Influence of pore water pressure on upper bound analysis of collapse shape for square tunnel in Hoek-Brown media... Berlin Heidelberg 2011 Abstract: To investigate the effective shape of collapsing block in square tunnel subjected to pore water pressure, the analytical solution of detaching curve was derived using......
were investigated. The experimental results show that, at the same process parameters, the porosity and pore size distribution of green pellets have no evident relation with the MgO bearing additive, pore size of green pellets is between 15 μm and 35 μm and the porosity of green pellets is about 34%. There is a densification and consolidation phenomenon during the induration process; the pore size......
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J. Cent. South Univ. (2012) 19: 2047-2053 DOI: 10.1007/s11771-012-1243-7 Attenuation-type and failure-type curve models on accumulated pore water pressure in saturated normal consolidated clay... triaxial test results of saturated soft clay, similarities of variations between accumulated pore water pressure and accumulated deformation were analyzed. The Parr’s equation on accumulated......
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(NMR) are widely used for characterizing complex pore structures of rocks. Due to the prohibitive NMR experiment cost, numerical simulation was employed as an alternative approach to verify some theoretical aspects of NMR responses. Firstly, the basic principles of pore-scale NMR simulation based on random-walk method (RWM) were introduced. The RWM-simulated results were benchmarked......
Trans. Nonferrous Met. Soc. China 29(2019) 1067-1081 Macroscopic and microscopic trans-scale characteristics of pore structure of mine grouting materials Jian-hua HU1, Qi-fan REN1, Shao-wei MA1, Quan..., School of Civil and Environmental Engineering, Nanyang Technological University, Singapore Received 21 June 2018; accepted 29 December 2018 Abstract: The pore structure and porosity of three kinds......
Mechanical stability and pore structures of modified grouting material in karst foundation SONG Guozhuang1, WANG Lianjun1, ZHANG Yanrong1, GUO Ying1, CAO Yuanping2 (1. Beijing Key Laboratory of Track... grouting material can be improved by the synergy effect of polymers system. The pore size of hardening cement paste reduces obviously and the pore radius distribution tends to thin with multiple high......
fly ash in cement-based materials was investigated. The hydration heat of the composite cementitious materials was determined by isothermal calorimetry, and the hydration products, quantity, pore... of cement hydration, thus denser microstructure and more reasonable pore size distribution, but the hydration heat in total is reduced. It can also delay the induction period, but the accelerating......
Trans. Nonferrous Met. Soc. China 24(2014) 3509-3516 Effect of pore structures on corrosion resistance of porous Ni3Al intermetallics Liang WU1,2, Yue-hui HE2, Yao JIANG2, Yi ZENG2, Yi-feng XIAO1, Bo... rates of the porous Ni3Al intermetallics are not proportional to the true surface areas. The reason is that the pore size, pore size distribution and pore shape of the porous Ni3Al intermetallics......