Title :
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 :
South China Inst. of Environ. Sci., Ministy of Environ. Protection, Guangzhou, China
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; CCD imaging; cavity diameter measurement; charge coupled detector; direct measuring method; porous concrete; size 10 mm to 16 mm; size 16 mm to 20 mm; size 20 mm to 25 mm; size 25 mm to 32 mm; size 3.20 mm; size 4.33 mm; size 5 mm to 10 mm; size 6.70 mm; size 9.65 mm; Aggregates; Cavity resonators; Concrete; Imaging; Permeability; Software; Integrate Charge-Coupled Detector (CCD) imaging technology Method; mean cavity diameter; porous concrete;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2011 International Conference on
Conference_Location :
Shenzhen, Guangdong
Print_ISBN :
978-1-61284-289-9
DOI :
10.1109/ICICTA.2011.487
