Pore Structure and Microstructure of Foam Concrete

2010 ◽  
Vol 177 ◽  
pp. 530-532 ◽  
Author(s):  
Xin Gang Yu ◽  
Shi Song Luo ◽  
Yan Na Gao ◽  
Hong Fei Wang ◽  
Yue Xiang Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Image Analysis ◽  
Light Microscopy ◽  
Pore Structure ◽  
Digital Image ◽  
Digital Image Analysis ◽  
Foam Concrete ◽  
Structure And Microstructure ◽  
Scanning Electron

The pore structure and microstructure of the foam concrete was analyzed by scanning electron microscopy and light microscopy combined with digital image analysis. The results show that: (1) even-distributed fine and close pores resulting in high strength and low permeability; (2) uneven-distributed large size pores and open pores lead to low strength and high permeability; (3) light microscopy combined with digital image analysis is a cheap and convenient tool fitting for the pore structure analysis of the foam concrete; (4) scanning electron microscopy is very appropriate for the pore structure and microstructure analysis of the foam concrete.

Pore Structure and Microstructure of Super Light-Weight Foam Concrete Reinforced by Inorganic Fiber

2013 ◽  
Vol 591 ◽  
pp. 50-53
Author(s):  
Xin Gang Yu ◽  
Di Wu ◽  
Hao Hao ◽  
Yi Zhang ◽  
Hong Chao Xu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pore Structure ◽  
Light Weight ◽  
Foam Concrete ◽  
Structure And Microstructure ◽  
Scanning Electron

Super light-weight foam concrete with the density less than 250Kg/m3 was prepared by the physical foaming method. The pore structure and microstructure of the super light-weight foam concrete was analyzed by scanning electron microscopy.

scholarly journals Structure and microstructure of coronary dentin in non-erupted human deciduous incisor teeth

2002 ◽  
Vol 13 (3) ◽  
pp. 170-174 ◽  
Author(s):  
Luciane R.R S. Costa ◽  
Ii-Sei Watanabe ◽  
Márcia C. Kronka ◽  
Marcelo C.P. Silva
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Nitric Acid ◽  
Light Microscopy ◽  
Three Dimensional ◽  
Dentinal Tubules ◽  
Sem Study ◽  
Structure And Microstructure ◽  
Hematoxylin Eosin ◽  
Scanning Electron

The dentin structure of non-erupted human deciduous mandibular and maxillary central and lateral incisor teeth was studied employing light and scanning electron microscopy. For light microscopy, nitric-acid-demineralized and ground sections were used. The sections were stained by hematoxylin-eosin, picrosirius and azo-carmim methods, and ground specimens were prepared using a carborundum disk mounted in a handpiece. For SEM study, teeth were frozen in liquid nitrogen and fractured at longitudinal and transversal directions. Structurally, demineralization and ground methods revealed tubules with primary and secondary curvatures, canaliculi, giant tubules, interglobular dentin, predentin, and intertubular dentin. Scanning electron microscopy showed three-dimensional aspects of dentinal tubules, canaliculi, peritubular dentin, intertubular dentin, and predentin. This study contributes to knowledge about dentin morphology showing characteristics of teeth not yet submitted to mastication stress.

Rapid estimation of porosity and mineral abundance in backscattered electron images using a simple SEM image analyser

1984 ◽  
Vol 121 (2) ◽  
pp. 81-84 ◽  
Author(s):  
K. Pye
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Image Analysis ◽  
Digital Image Analysis ◽  
Rapid Estimation ◽  
Sem Image ◽  
Quantitative Estimates ◽  
Image Analyser ◽  
Backscattered Electron ◽  
Scanning Electron

AbstractImage analysis is rapidly becoming an integral part of scanning electron microscopy. A number of analogue and digital image analysis systems of varying sophistication are now commercially available for the SEM. This paper illustrates how one such relatively simple system, the IMAS image analyser manufactured by Cambridge Technology, can be used to obtain rapid quantitative estimates of porosity and mineral abundance in backscattered electron images of polished rock sections.

Effect of Fly Ash Content on Properties of Fly Ash-Coal Gangue Foam Concrete

2011 ◽  
Vol 261-263 ◽  
pp. 366-370
Author(s):  
Che Ping Wu ◽  
Xin Gang Yu ◽  
Yan Na Gao ◽  
Huaan Xiao ◽  
De Jun Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Compressive Strength ◽  
Fly Ash ◽  
Ash Content ◽  
Coal Gangue ◽  
Dry Density ◽  
Foam Concrete ◽  
Structure And Microstructure ◽  
Scanning Electron

The effect of the fly ash content on the properties of the fly ash-coal gangue foam concrete was studied in this paper. Results revealed that: With the increase of the fly ash content, the dry density, the compressive strength and the shrinkage of the fly ash-coal gangue foam concrete decrease; the density of the fly ash - coal gangue foam concrete was influenced greatly by the ratio of water to total dry material. The pore structure and microstructure of the foam concrete was analyzed by scanning electron microscopy, and the results show that most of the pores are fine, closed, and even distributed.

Phase Investigations of Copper Based CuZn38Al2MnFe Alloy

2006 ◽  
Vol 113 ◽  
pp. 537-540
Author(s):  
Marek Szkodo ◽  
M. Głowacka ◽  
M. Smajdor ◽  
Henryk Bugłacki
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Image Analysis ◽  
Chemical Composition ◽  
Light Microscopy ◽  
Volume Fraction ◽  
Energy Dispersive ◽  
Phase Identification ◽  
X Ray ◽  
Scanning Electron

In the work phase investigations of special brass CuZn38Al2MnFe alloy are presented. The microstructure, chemical composition and phase identification of the investigated alloy were examined using scanning electron microscopy (Philips 30/ESEM), light microscopy Leica coupled with PC computer with installed MultiScan program, energy dispersive X-ray spectroscopy (EDX) and X-ray diffractometry (XRD), respectively. The investigation of volume fraction existing phases was carried out using image analysis. It was found in the test bend that presence of Fe4Mn77Si19 phase in microstructure caused an increase of brittleness of the tested alloy.

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