An experimental study on the effect of chloride penetration on moisture diffusion in concrete

10.1617/13936 ◽  
2002 ◽  
Vol 35 (254) ◽  
pp. 659-663 ◽  
Author(s):  
A. Ababneh
Keyword(s):  
Experimental Study ◽  
Moisture Diffusion ◽  
Chloride Penetration

Deterioration of Concrete Due to Combined Reaction of Carbonation and Chloride Penetration: Experimental Study

2007 ◽  
Vol 348-349 ◽  
pp. 729-732 ◽  
Author(s):  
In Seok Yoon
Keyword(s):  
Experimental Study ◽  
Boundary Conditions ◽  
Chloride Penetration ◽  
Various Boundary Conditions

In most studies, deterioration of concrete due to carbonation or chloride penetration is investigated separately. However, the deterioration of concrete is normally caused by the combination. The purpose of this study is to investigate the interaction between carbonation and chloride penetration and their effects on concrete. This was examined experimentally under various boundary conditions. For concrete under the double condition, the risk of deterioration due to carbonation was not severe. However, it was found that the carbonation of concrete could significantly accelerate chloride penetration. As a result, chloride penetration in combination with carbonation can cause harmful deterioration of concrete.

Experimental Study of Moisture Diffusion Through Fabrics

2017 ◽  
Vol 49 (1) ◽  
pp. 54-59
Author(s):  
L. I. Zhmakin ◽  
N. M. Sharpar
Keyword(s):  
Experimental Study ◽  
Moisture Diffusion

scholarly journals Experimental Study of Drying Parameters of Ginger at Different Temperature and Moisture Content

2018 ◽  
Vol 3 (9) ◽  
pp. 34
Author(s):  
Olusegun Solomon Olaoye ◽  
A. J. Ogunleye
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Thermal Diffusivity ◽  
Moisture Content ◽  
Specific Heat ◽  
Initial Moisture Content ◽  
Moisture Diffusion ◽  
Effect Of Temperature ◽  
Clean Water ◽  
Heat Treated

Drying provides extended shelf life to agricultural crops in general and thus proper design of dryer will assist in drying them to acceptable level and quality. To design adequate dryer, necessary drying parameters of drying materials is necessary. This work involves experimental determination of effective drying parameters such as moisture content, moisture diffusion coefficient, density (true and bulk), specific heat, thermal conductivity and thermal diffusivity of ginger and to analyze these parameters in relation to each other. Fresh ginger rhizomes were washed to remove soil from the field, peeled and washed again in clean water and sliced into thin pieces. The sliced ginger was heat-treated by adding 200ml of clean water and steaming for 5–8 minutes in an aluminum pot, to a temperature of 85–90 oC, and a light brown colour. Microwave oven, calorimeter, desiccators, thermometers, triple beams balance, micrometer screw gauge were used to determine the drying parameters of ginger. Effect of temperature and moisture content on some thermal properties was determined. The results of the experiments shows that average initial moisture content for the ginger samples was 72.31%, the true and bulk densities of the sample increased linearly from 0.5809 to 0.6338g/cm3 and 0.7405 to 0.7972 g/cm3 respectively between the temperatures of 45 – 75 °C. The specific heat capacity of ginger varied from a minimum of 1.568kJkg-1K-1 to a maximum of 2.026kJ kg-1K-1, with temperature in the range of 45oC to 75oC and moisture content in the range of 24.43 to 46.19 % (d.b). The thermal conductivity of ginger samples varied from 0.316×10-3 to 9.763×10-4 Jm-1S-1 oC; as the moisture content and temperature increased. Thermal diffusivity of the ginger increased linearly from 3.149×10-8 to 4.438×10-8 m2s-1 for ginger with increase in moisture content and temperature. Conclusively, the experimental study analysis show that specific heat of ginger varies with temperature. Also, there is variation in length, breath and thickness of ginger when subjected to temperature. Therefore, it can be said that ginger do shrinks when it is subjected to heat.

Sign in / Sign up

Export Citation Format

Share Document