|
Title |
Estimation of Air Void System and Permeability of Latex-Modified Concretes by Image Analysis Method
|
|
Keywords |
화상분석 ; 라덱스개질 콘크리트 ; 소포제 ; 공극 ; 투수성 image analysis method ; latex modified concrete ; antifoamer ; air void ; permeability |
|
Abstract |
It is known that latex-modified concretes were increased their durability and permeability by added latex. The purpose of this study was to analysis the air void systems in latex-modified concretes using a reasonable and objective image analysis method with main experimental variables such as water-cement ratios, latex contents (0%, 15%) and cement types(ordinary portland cement, high-early strength cement and very-early strength cement). The results are analyzed spacing factor, air volume after hardened, air distribution and structure. Also, air void systems and permeability of latex-modified concretes were compared with correlation. The results are as follows; The same w/c ratio LMC showed better air entraining effect than OPC with AE water reducer. The VES-LMC showed that the number of entrained air below 100㎛ increased more than four times. In the HES-LMC, micro entraining air having range from 50 to 500㎛ increased above 7 times without antifoamer. Though spacing factor was measured low, latex-modified concretes were showed that permeability was good. It is considered that air void system does not have an effect on the property of latex-modified concretes but latex film is more influenced in the their durability
|