scholarly journals Micro-pore structure characteristics and macro-mechanical properties of PP fibre reinforced coal gangue ceramsite concrete

2020 ◽  
Vol 2020 (12) ◽  
pp. 1192-1197
Author(s):  
Jisheng Qiu ◽  
Min Xing ◽  
Zhanlu Yang ◽  
Chenghua Zhang ◽  
Xiao Guan
Keyword(s):  
Mechanical Properties ◽  
Pore Structure ◽  
Coal Gangue ◽  
Structure Characteristics

Durability And Microstructure of Pore Reduced Cements(PRC)

1994 ◽  
Vol 370 ◽  
Author(s):  
N.M. Geslin ◽  
D. Israel ◽  
E.E. Lachowski ◽  
D.E. Macphee
Keyword(s):  
Mechanical Properties ◽  
Pore Structure ◽  
Cementitious Materials ◽  
Product Density ◽  
Structure Characteristics ◽  
Pore Properties ◽  
Durability Performance

AbstractThe pore structure characteristics of cementitious materials play an important role in defining their mechanical and durability performance. The mechanical properties of pore reduced cements (PRC) have already been reported [5] as a function of the product density. This paper reports recent data on the durability of PRC and attempts to relate the pore properties of the material to its resistance against deterioration in aggressive environments.

scholarly journals Pore Structure Characteristics of Baking-Free Slag-Sludge Bricks and Its Correlations to Mechanical Properties

2021 ◽  
Vol 9 (10) ◽  
pp. 1805-1819
Author(s):  
Lei Guo ◽  
Pingping Chen ◽  
Lixia Guo ◽  
Zhilong Xue ◽  
Zi Guan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Pore Structure ◽  
Structure Characteristics

Development of pore structure characteristics of a weathered crust elution-deposited rare earth ore during leaching with different valence cations

2021 ◽  
Vol 201 ◽  
pp. 105579
Author(s):  
Lingbo Zhou ◽  
Xiaojun Wang ◽  
Chengguang Huang ◽  
Hao Wang ◽  
Huachang Ye ◽  
...  
Keyword(s):  
Rare Earth ◽  
Pore Structure ◽  
Structure Characteristics ◽  
Weathered Crust

scholarly journals Characteristics of Lightweight Cellular Concrete and Effects on Mechanical Properties

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2678 ◽  
Author(s):  
Wei Yu ◽  
Xu Liang ◽  
Frank Mi-Way Ni ◽  
Abimbola Grace Oyeyi ◽  
Susan Tighe
Keyword(s):  
Mechanical Properties ◽  
Pore Structure ◽  
High Definition ◽  
Pore Characteristics ◽  
Software Applications ◽  
Solid Part ◽  
Electron Microscopes ◽  
Lab Test ◽  
Scanning Electron Microscopes ◽  
Cellular Concrete

This study investigated the pore structure and its effects on mechanical properties of lightweight cellular concrete (LCC) in order to understand more and detailed characteristics of such structure. As part of investigation, environment scanning electron microscopes (ESEM) and industrial high-definition (HD) macro photography camera were separately used to capture and compare images of specimens. Physical properties of the pore structure, including pore area, size, perimeter, fit ellipse, and shape descriptors, were studied based on the image processing technology and software applications. Specimens with three different densities (400, 475, and 600 kg/m3) were prepared in the laboratory. Firstly, the effects of density on the characteristics of pore structure were investigated; furthermore, mechanical properties (compressive strength, modulus of elasticity and Poisson’s ratio, flexural strength and splitting tensile strength of LCC) were tested. The relationships among pore characteristics, density, and mechanical properties were analyzed. Based on the results obtained from the lab test—comparisons made between specimens with high-densities and those with low-densities—it was found significant variability in bubble size, thickness, and irregularity of pores. Furthermore, the increase of density is accompanied by better mechanical properties, and the main influencing factors are the thickness of the solid part and the shape of the bubble. The thicker of solid part and more regular pores of LCC has, the better mechanical properties are.

The characterization and preparation of porous low dielectric films using various cyclodextrins as template materials

2003 ◽  
Vol 766 ◽  
Author(s):  
Jin-Heong Yim ◽  
Jung-Bae Kim ◽  
Hyun-Dam Jeong ◽  
Yi-Yeoul Lyu ◽  
Sang Kook Mah ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Dielectric Constant ◽  
Pore Structure ◽  
Pore Diameter ◽  
Dielectric Films ◽  
Low Dielectric Constant ◽  
Cyclodextrin Derivatives ◽  
Low Dielectric ◽  
Low K

AbstractPorous low dielectric films containing nano pores (∼20Å) with low dielectric constant (<2.2), have been prepared by using various kinds of cyclodextrin derivatives as porogenic materials. The pore structure such as pore size and interconnectivity can be controlled by changing functional groups of the cyclodextrin derivatives. We found that mechanical properties of porous low-k thin film prepared with mCSSQ (modified cyclic silsesquioxane) precursor and cyclodextrin derivatives were correlated with the pore interconnection length. The longer the interconnection length of nanopores in the thin film, the worse the mechanical properties of the thin film (such as hardness and modulus) even though the pore diameter of the films were microporous (∼2nm).

Effects of graphene oxide on pore structure and mechanical properties of cementitious composites

2020 ◽  
Vol 234 ◽  
pp. 111709 ◽  
Author(s):  
Su-Jin Lee ◽  
Seong-Hoon Jeong ◽  
Dong-Uk Kim ◽  
Jong-Pil Won
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Pore Structure ◽  
Cementitious Composites
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