Determination of chloride ion concentration in concrete by means of near infra-red spectroscopy

2011 ◽  
Author(s):  
Vladimir S. Ban ◽  
Boris L. Volodin ◽  
Sergei Dolgi
Keyword(s):  
Chloride Ion ◽  
Ion Concentration ◽  
Infra Red

Sea Sand Concrete Chloride Ion Diffusion and Combination of Curing

2012 ◽  
Vol 174-177 ◽  
pp. 358-361
Author(s):  
Jian Bin Chen ◽  
Guo Liang Zhang ◽  
Li Wei Mo ◽  
Jun Zhe Liu ◽  
Zhi Min He
Keyword(s):  
Chloride Ion ◽  
Chloride Ions ◽  
Water Soluble ◽  
Ion Concentration ◽  
Ion Diffusion ◽  
Binding Characteristics ◽  
Fly Ash Concrete ◽  
Sea Sand ◽  
Chloride Ion Diffusion

The concentration of chloride ion in concrete has been an important part of the study of reinforcement corrosion, while the microstructure of concrete on the concentration of chloride ions play an important role, in order to evaluate the sea sand for ordinary concrete and fly ash concrete microstructure andmineral composition, we use the 28 days of age in sea sand Mohr method for the determination of the different types of water-soluble chloride ion concentration to the chloride ion binding characteristics in the study of sea sand in concrete

Fluctuations of Annual Precipitation and Water Resources Quality in Ukraine

2016 ◽  
Vol 10 (4s) ◽  
pp. 621-629
Author(s):  
Valentina Pidlisnyuk ◽  
◽  
John Harrington JR ◽  
Yulia Melnyk ◽  
Yuliya Vystavna ◽  
...  
Keyword(s):  
Water Resources ◽  
Surface Waters ◽  
Precipitation Amount ◽  
Ion Concentration ◽  
Annual Precipitation ◽  
Resource Quality ◽  
Phosphate Ion ◽  
Regional Trends

The article focuses on examining the influence of fluctuations in annual precipitation amount on the quality of surface waters. Water quality was estimated with data on BOD, COD and phosphate–ion concentration within five selected regions of Ukraine. Analysis of the precipitation data (1991 – 2010) showed different regional trends. Using the statistics, determination of the interconnection between precipitation amount and water resources quality were done. The obtained regularities and associated uncertainties can be used for prediction of changes in water resource quality and as a guide for future adaptation to possible climate change.

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