Structure effects on the mechanical responses of kaolinite and pore-size evolution at different states

2007 ◽  
Author(s):  
Chun Ying Yu
Keyword(s):  
Pore Size ◽  
Mechanical Responses ◽  
Size Evolution

Evaluation and Modeling of the CO2Permeability Variation by Coupling Effective Pore Size Evolution in Anthracite Coal

2015 ◽  
Vol 29 (2) ◽  
pp. 717-723 ◽  
Author(s):  
Junqian Li ◽  
Dameng Liu ◽  
Shuangfang Lu ◽  
Yanbin Yao ◽  
Haitao Xue
Keyword(s):  
Pore Size ◽  
Anthracite Coal ◽  
Size Evolution ◽  
Effective Pore Size

scholarly journals Semi-vitrified porous kyanite mullite ceramics: Young modulus, microstructure and pore size evolution

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Juvenal N. G. Deutou ◽  
Ntieche Zounedou ◽  
Rodrigue C. Kaze ◽  
Hawa Mohamed ◽  
Tibi Beda ◽  
...  
Keyword(s):  
Pore Size ◽  
Young Modulus ◽  
Size Evolution ◽  
Mullite Ceramics

In-Situ Microstructure Characterization of Sintering of Controlled Porosity Materials

1994 ◽  
Vol 346 ◽  
Author(s):  
Helen M. Kerch ◽  
Harold E. Burdette ◽  
Rosario Gerhardt ◽  
Susan Krueger ◽  
Andrew J. Allen ◽  
...  
Keyword(s):  
Pore Size ◽  
Small Angle ◽  
Sintering Behavior ◽  
Quantitative Measurements ◽  
Angle Scattering ◽  
Size Evolution ◽  
Bimodal Pore Size Distribution ◽  
Controlled Porosity ◽  
Colloidal Gel

ABSTRACTThe isothermal sintering behavior of a colloidal gel with a well-characterized pore structure was studied using a newly commissioned in-situ small-angle neutron scattering furnace. The apparatus enables small-angle scattering measurements to be performed on monolithic samples during heat treatment in an oxidizing, reducing, or neutral environment at temperatures up to 1700°C. In-situ, quantitative measurements of the pore size evolution within a gel possessing a bimodal pore size distribution is discussed. Also reported is the in-situ measurement of the gel's surface area evolution which is an important microstructural parameter in understanding the sintering behavior of highly porous materials.

scholarly journals Pore-Size Distribution Evolution of Intact, Compacted, and Saturated Loess from China during Consolidation and Shearing

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Ping Li ◽  
Shengjun Shao ◽  
Tao Xiao ◽  
Dandan Zhu
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Mercury Intrusion Porosimetry ◽  
Dominant Role ◽  
Confining Stress ◽  
Mechanical Responses ◽  
The Stability ◽  
Compacted Loess ◽  
Intact Loess

To examine the pore-size distribution (PSD) evolution of intact, compacted, and saturated loess during deformation associated with consolidation or shearing, nominally identical specimens were consolidated to different confining stresses or sheared to sequential axial strains under the same confining stress, and the PSD of each deformed specimen was characterized using the Mercury intrusion porosimetry (MIP) technique. The results show that the PSD evolution during consolidation is similar to that during shearing, suggesting that the PSD evolution depends mainly on whether the soil volume contracts or expands. The volumetric contraction results mainly from compression of interaggregate pores, and the intra-aggregate PSD or intra-aggregate pores are not affected. In compacted and saturated loess, interaggregate pores are compressed from the larger to the smaller, while in intact loess, the PSD evolution depends on whether the soil yields. This difference arises from different cementations that dominate particle associating in three soils. In intact loess, carbonate cementations that can be damaged by remolding and loading contribute greatly to particle associating. As a result, the stability of a pore is controlled not only by its size but also by carbonate cementations at surrounding particle contacts. Clay cementations that play the dominant role in particle aggregating in compacted loess are resistant to loading; thus, aggregates could not be destroyed by loading and the mechanical responses of compacted loess are in fact interactions among aggregates. Both carbonate and clay cementations can fail under the combined effect of loading and inundation, leading to disintegration of aggregates and turning of the loess structure from the double-structured to the uniform type.

Pore size evolution during sintering of ceramic oxides

1990 ◽  
Vol 16 (3) ◽  
pp. 177-189 ◽  
Author(s):  
J.A. Varela ◽  
O.J. Whittemore ◽  
E. Longo
Keyword(s):  
Pore Size ◽  
Ceramic Oxides ◽  
Size Evolution
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