A New Measurement Method for Cavity Diameter of Porous Concrete

Author

Qing-wei, Guo ; Yong-you, Hu ; Bing-hui, Zheng ; Chun-Ming, Hu ; Xin, Wang

Author_Institution

Ministy of Environ. Protection, South China Inst. of Environ. Sci., Guangzhou, China

fYear

2011

fDate

19-20 Feb. 2011

Firstpage

12

Lastpage

16

Abstract

The cavity diameter is an important parameter to denote the characteristic of porous concrete. So far, the information about the measurement of cavity diameter of porous concrete is quite insufficient. Especially, the direct measuring method was seldom reported. In the study, a new method to measure the cavity diameter by applying Integrate Charge-Coupled Detector (CCD) imaging technology was developed. The method was simple, time and money spending less and effective. In terms of the method, the mean cavity diameters of porous concretes made by coarse aggregates of 5-10mm,10-16mm, 16-20mm, 20-25mm and 25-32mm were 3.20mm, 4.33 mm, 6.70 mm, 7.75 mm and 9.65mm, respectively. Both void ratio and permeability coefficient of pore concrete were affected by cavity diameter.

Keywords

CCD image sensors; concrete; diameter measurement; porous materials; coarse aggregates; direct measuring method; integrate charge-coupled detector imaging technology; mean cavity diameter measurement method; permeability coefficient; porous concrete; size 5 mm to 32 mm; void ratio; Aggregates; Cavity resonators; Concrete; Imaging; Permeability; Software; Integrate Charge-Coupled Detector (CCD) imaging technology Method; mean cavity diameter; porous concrete;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-61284-278-3

Electronic_ISBN

978-0-7695-4350-5

Type

conf

DOI

10.1109/CDCIEM.2011.575

Filename

5747753